20250506_D1_Niguel Hills Neighborhood Traffic Study Recommendations — Laguna Niguel City Council, May 6, 2025 (part 1 of 2)

To:

FROM:

DATE:

SUBJECT:

CITY OF LAGUNA NIGUEL

CITY COUNCIL AGENDA ITEM
Honorable Mayor and Council Members
Jacki Scott, Public Works Director/City Engineer
May 6, 2025
Niguel Hills Neighborhood Traffic Study Recommendations

RECOMMENDATION
Staff recommends that the City Council:

1. Approve the proposed signing and striping improvements; and,

2. Approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood.

BACKGROUND
Over the years, residents of the Niguel Hills neighborhood have expressed concerns about high speeds on La Plata Drive, which is a 40-foot wide, double-loaded residential street that intersects Crown Valley Parkway. A location map of the neighborhood is provided as Attachment "A". La Plata Drive is approximately half a mile long with a downhill grade from Via Portola to Crown Valley Parkway. The posted speed limit on La Plata Drive is 25 miles per hour (mph). Excluding collisions at the signalized intersection of Crown Valley Parkway and La Plata Drive, there have been two reported collisions on La Plata Drive in the past five years: one caused by a driver under the influence and the other by a pedestrian violation.

In June 2015, the City Council approved the installation of centerline striping along La Plata Drive from Vista Plaza Drive to Via Portola to reduce speeds. The installation of the centerline temporarily reduced speeds by an average of 4 mph. 2016 - 2017
In March 2016, residents contacted the City with additional concerns of high speeds along the same segment of La Plata Drive. In June 2016, the Traffic and Transportation Commission recommended that the City Council approve a petition for speed bumps on La Plata Drive. In July 2016, the City Council directed staff to mail ballots to the affected residents to vote on the installation of speed bumps on La Plata Drive. Per the City's Residential Traffic Management Policy, "affected residents will include residents of the

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street and other residents in the area who use the street due to the circulation system and/or that would experience an increase in emergency response time." Ballots were mailed to residents of Via Larga, Via Pan, Via Cebolla, and La Plata Drive. The results of the ballot did not meet the minimum 67% support required to install speed bumps on La Plata Drive. The City Council certified the ballot results in September 2016.

In November 2016 and January 2017, traffic circle concepts were discussed at the Traffic and Transportation Commission meetings as a traffic calming measure on La Plata Drive.

This countermeasure was not explored further due to a lack of support from residents. 2021
In December 2021, a resident requested traffic calming measures on La Plata Drive during the Public Comment portion of a Traffic and Transportation Commission meeting.

Since that meeting, oversized speed limit signs and speed limit pavement markings have been installed on La Plata Drive, which reduced speeds by nearly 2 mph. Speed feedback trailers have been regularly deployed on La Plata Drive on a rotating basis. Increased police enforcement resulted in as many as 19 citations in a single enforcement period. It has been observed that many of the speed violators reside within the La Plata Drive neighborhood. Outreach and education to the neighborhood by City staff including Orange County Sheriffs Department deputies was increased.

A series of public meetings in February, March, and April 2023 were held regarding a development proposal to construct and operate a new assisted living and memory care community at Grace Church, located on La Plata Drive near Crown Valley Parkway. At the meetings, resident comments and questions mainly focused on existing traffic issues in their neighborhood, in particular, speeding on several streets within Niguel Hills.

In response to the traffic concerns shared at the Grace Church development meetings, staff recommended edgeline striping for La Plata Drive. This recommendation was discussed at the April 2023 Traffic and Transportation Commission meeting. Edgeline striping is a traffic calming measure used to narrow the travel lanes for vehicles, thereby inducing drivers to lower their speeds. Many of the residents who spoke during the public comment period were not in favor of the edgeline striping and requested alternative traffic calming measures on La Plata Drive, traffic calming measures on other nearby residential streets, and more public outreach to the neighborhood.

During the meeting, the Commission selected one of staffs alternative actions and directed staff to perform a comprehensive traffic calming study for the Niguel Hills neighborhood in lieu of installing the recommended edgeline striping.

In September 2023, the City Council awarded a contract to RK Engineering to conduct the traffic study and public outreach. The scope of the traffic study was expanded to not only include La Plata Drive but to also include the entire Niguel Hills neighborhood, which consists of over 480 homes that are not managed by a homeowner's association. Unlike previous attempts to resolve issues one street at a time, this traffic study took a holistic approach to address the entire area.

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The Niguel Hills Neighborhood Traffic Study supports City Council Goal 1 (Public Safety), Goal 4 (Infrastructure and Technology), and Goal 6 (Communication & Community Outreach).

ANALYSIS
The primary goal of the Niguel Hills Neighborhood Traffic Study was to provide datadriven findings and solutions that directly address residents' concerns and facilitate a collaborative process where the neighborhood works together to reach a decision that everyone can support. The public outreach plan included the following:
• Three town hall meetings were held at Grace Church in February, September, and November 2024 to collect and share data, present recommendations, and obtain feedback from residents.
• A neighborhood survey was conducted to gauge interest on potential traffic calming measures.
• A dedicated phone line and email address were provided to residents to call, text, or email traffic study staff members directly with questions or comments. • A project webpage was used to communicate updates and important information and included links to the town hall meeting presentations. • Lawn signs and postcards were used to inform and remind residents of town hall meetings and deadlines.
• A voting packet was prepared for each property owner that included the official ballot, voting instructions, envelope, and attachments containing additional information and relevant exhibits. A copy of the voting packet is attached as Attachment "B".

Key findings of the study are summarized below:
• Speed surveys revealed that the 85th percentile speeds on several streets, including La Plata Drive, Via Portola, and Vista Plaza Drive, exceeded the posted speed limit of 25 mph by 8 mph or more. Typical residential streets have 85th percentile speeds of 28-32 mph, and several of the streets in the study area surpassed this range.
• Historical data showed 11 collisions within the study area over the past five years, with a range of factors including unsafe speeds, unsafe starting or backing, auto right-of-way, and driver under the influence being among the most common causes. However, no street segment or intersection experienced five correctable collisions or more within a 12-month period, which is the State's criterion to warrant additional traffic control such as a traffic signal or multi-way stop control. • A survey indicated that cut-through traffic is not a significant issue, with most vehicles traveling within the neighborhood to access their home.

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Traffic Study Recommendations
The report recommended implementing a comprehensive traffic calming plan that includes the installation of 14 speed humps, addition of new signing and striping, trimming and ongoing maintenance of overgrown landscaping, and providing focused traffic enforcement. These measures aim to reduce vehicle speeds and enhance pedestrian safety.
• Speed Humps
According to the Institute of Transportation Engineers Guide to Vertical Deflection Speed Reduction Techniques, published in December 2022, for speed hump projects to succeed, it is critical to obtain the support of a substantial majority of all residents in a neighborhood considering such treatments. The City's Residential Traffic Management Policy (RTMP) contains the minimum thresholds for community support as a means to reinforce resident participation. The RTMP was initially adopted by the City Council in 1993 and was last updated in 2005. The RTMP requires that a minimum of 50% of the ballots mailed shall be returned to the City for the overall voting process to be considered valid, and a minimum of 67% of the valid individual ballots must support the installation. Per the RTMP, "this super majority is designed to provide long term stability on the issue. A simple minority vote could cause frequent shifts in support resulting in continuous competing petitions and requests for votes to install or keep or remove the humps." Many public agencies require the support of at least 67% to 75% of all residents before vertical deflection/humps are installed. This ensures that a substantial majority of people affected agree with the project and that there is a general acceptance of the final design plan. Examples of Orange County agencies with at least a 67% minimum threshold include the City of Anaheim, City of La Habra, City of Newport Beach, City of San Clemente, City of Santa Ana, and City of Westminster. The City of Laguna Niguel's speed hump policy aligns with the industry's recommended practice.

Voting packets including ballots were mailed on February 4, 2025 with a deadline to postmark or drop off ballots to City Hall by February 28, 2025. Each property owner in the entire neighborhood was provided an opportunity to vote on whether or not they support the installation of all 14 speed humps strategically placed throughout the community.

Of the 495 ballots sent, 301 ballots were returned, exceeding the 248 ballot requirement for the 50% threshold.

Ballots Sent Returned Ballots 50% Thresholg
495 301 248

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Of the 301 returned ballots, 255 ballots were valid. To move forward with the installation of the 14 speed humps, 67% of the valid individual ballots, or 171 ballots, must support the installation. There was a total of 151 'yes" votes, approximately 59% in support, which is less than the 67% minimum requirement to support the proposed speed hump installation.

Valid Ballots "Yes" Votes "No" Votes
255 151 104
The City Clerk's Tally of Ballots is provided as Attachment "C".

Even though speed humps were not supported by the neighborhood, additional traffic calming measures were identified that could reduce speeds and enhance safety. These improvements were designed to work together in a comprehensive fashion to address the residents' concerns throughout the neighborhood and are recommended for approval as one complete package.
• Signing and Striping
Several intersections were reviewed where residents reported sight distance issues. The study data concluded that striping improvements at the intersection of La Plata Drive and Vista Plaza Drive to enhance sight distance and safety are necessary. Painted curb extensions, a shifted stop bar with a red reflective post, and a new high-visibility continental crosswalk aire recommended at this intersection to meet traffic safety standards. The engim~ering design plan has been completed and is schedule,d for installation this summer.

The study recommended centerline striping along streets such as Vista Plaza Drive and Via Portola. These streets are too steep to be candidates for speed humps but they could benefit from an alternative traffic calming measure.

One-way stop signs are also recommended to regulate right-of-way at 10 intersections in the neighborhood where sight distance is limited. Installation of a stop sign on the minor street should be considered when a restricted view requires motorists to stop in order to adequately observe conflicting traffic on the through street.

Edgeline striping and a new center two-way left-turn lane are recommended on La Plata Drive between Crown Valley Parkway and Vista Plaza Drive. This new striping will narrow the wide roadway approaching Crown Valley Parkway. The two-way left-turn lane also provides a longer left-turn pocket for the future development at Grace Church.

Concept plans for the La Plata DriveNista Plaza Drive intersection improvements, stop sign placements, and edgeline striping are shown in Attachment "D".

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• Landscape Trimming
The study identified several areas where private landscaping should be trimmed back to enhance sight distance at intersections. Staff will be coordinating with the individual homeowners to request trimming. This is a common request within residential neighborhoods throughout the City, and most homeowners and homeowners associations are cooperative and provide the needed trimming. • Focused Enforcement
Enforcement "hotspots" were also identified during the data collection phase of the study. The Orange County Sheriffs Department has been providing enforcement, as time and resources permit, and will continue to provide traffic enforcement to manage speeds in the neighborhood.

Traffic and Transportation Commission Review
On April 23, 2025, the Traffic and Transportation Commission reviewed the Niguel Hills Neighborhood Traffic Study Recommendations discussion item. During public comment on this item, five residents spoke in favor of speed hump installation even though the required 67% minimum requirement for support was not met.

Based on the information presented during the meeting, the Traffic and Transportation Commission concurred with staffs proposed signing and striping improvements and recommended that the City Council approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood. The April 2025 Traffic and Transportation Commission staff report and draft meeting minutes are included as Attachments "E" and Once the improvements are complete, staff will continue to monitor conditions within the neighborhood and make additional recommendations or adjustments as required.

ALTERNATIVES CONSIDERED
The City Council may decide not to approve the installation of 10 one-way stop signs.

This alternative is not recommended because the stop signs are intended to regulate right-of-way and enhance safety at intersections.

FISCAL REVIEW
The cost to install the proposed improvements is approximately $150,000. The Fiscal Year 2024-25 Public Works Department budget includes sufficient funds for the proposed signing and striping improvements.

LEGAL REVIEW
No legal review is required for this report.

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CONCLUSION
Staff recommends that the City Council:

1. Approve the proposed signing and striping improvements; and,

2. Approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood.
~~ a IScott
City Manager blic Works Director/City Engineer
ngine
Attachments:

A. Location Map
B. Voting Packet
C. City Clerk's Tally of Ballots
D. Concept Plans for Signing and Striping Improvements
E. Traffic and Transportation Commission Staff Report, April 23, 2025 F. Traffic and Transportation Commission Draft Meeting Minutes, April 23, 2025

ATTACHMENT A
Location Map
Niguel Hills Neighborhood
Location Map

ATTACHMENT B
Voting Packet

CITY OF LAGUNA NIGUEL
30111 Crown Valley Parkway, Laguna Niguel, California 92677 Phone: (949) 362-4300 Fax (949) 362-4352
January 31, 2025

CITY COUNCIL
Mayor Ray Gennawey
Mayor Pro Tern Gene Johns
Council Member Kelly Jennings
Council Member Stephanie Oddo
Council Member Stephanie Winstead
SUBJECT: SPEED HUMP VOTE FOR NIGUEL HILLS NEIGHBORHOOD
Dear Property Owner:

At the request of residents in the Niguel Hills neighborhood, the City conducted a comprehensive traffic study to evaluate traffic calming measures for not only La Plata Drive but the entire neighborhood. The City has determined that speed humps may be appropriate to address the speeding concerns of the residents in the Niguel Hills neighborhood.

The City is conducting a vote of the affected property owners to determine if speed humps should be installed. Enclosed are the official ballot, instructions, envelope, and additional information on speed humps. Ballots must be postmarked or hand-delivered to the City Clerk's Office by Friday, February 28, 2025 no later than 5:00 p.m.

When a ballot is received by the City, the City will verify the information by comparing it to our property owner records . Once the information is verified, the ballot will be separated from the envelope. This is designed to provide a secret ballot process while still allowing the City to verify the document. The City will not keep any record of how a particular property owner voted.

The City will only record whether or not a ballot was received from a particular property.

Approval of speed hump installations in all proposed locations requires a "yes" vote from 67% of the property owners in the voting area. Not casting a vote will be counted as a "no" vote. The results will be tabulated and presented to the Traffic and Transportation Commission and the City Council at their regularly scheduled meetings.

Thank you for your participation in the process. If you have any questions, please contact City staff at (949) 315-0127 or [email protected].

Enclosures
Q) ENCLOSURES:
@ • Ballot: Official City ballot for the Niguel Hills neighborhood. • Instructions: For voting and submitting vote.
• City Supplied Envelope
• Attachment A: Information about speed humps.
• Attachment B: Map of the voting area.
@ • Attachment C: A map that shows the number and approximate locations of the proposed speed humps, as well as a list of streets indentified for proposed speed hump installation.

If you would like to drive over speed humps similar to the ones being proposed for installation in the Niguel Hills neighborhood, please drive along Adelanto Drive in Laguna Niguel .
• (949) 315-0127 e www.cityoflagunaniguel.org • [email protected]

CITY OF LAGUNA NIGUEL
30111 Crown Valley Parkway
Laguna Niguel, CA 92677

OFFICIAL CITY BALLO'F
Niguel Hills Neighborhood
Speed Hump Installation Vote
Indicate whether or not you support the installation of speed humps at the proposed locations shown in Attachment "C" by marking the appropriate box below using a blue or black pen.
□
□
I suJu~ort the installation of speed humps in the Niguel Hills neighborhood at the proposed locations shown in
Attachment "C."
I do not SUP-P-Ort the installation of speed humps in the Niguel Hills neighborhood at the proposed locations
shown in Attachment "C."
See the reverse side for instructions on completing and submitting this ballot. ...

OFFICIAL CITY BALLOT RETURN TO CITY H:ALL
Ballots must be P-Ostmarked or hand-delivered to the CitY.

Clerk's Office bY. FebruarY. 28, 2025 no later than 5:00 P-.m.

Instructions for completing and
submitting this ballot:

This ballot shall be completed only by the
property owner. Only one vote P-er
household/address will be counted. In order for
the ballot to be counted, you must do the
following:
1) Indicate whether or not you support the
installation of speed humps at the proposed
locations shown in Attachment "C" by marking
the· appropriate box below using a blue or black
pen. Example:
0 0 ~ I 1&Ulll.ll.ttthe installation of speed humps in the Niguel Hills neighborhood at the proposed locations shown in
Attachment "C~
0 ® □ I AR...D2U.U.Rp_grt lhe installatJon of speed humps in the Niguel Hills neighborhood at rhe proposed
locations shown in Attachment "C "
2) Place this completed one (1) page ballot in the
City supplied/self-addressed/stamped envelope
and seal the envelope.
3) On the back of the City supplied return envelope,
fill out the label in its entirety- all four lines:
1) Property address; 2) Printed name;
3) Signature; 4) Date.

Example:

L.ne 1: j 12345 Golden ~. '--Nge, CA 'l2677
~Z r~
Line3: 3--~
l..ne 4: lll01l2D25
Ballots and/or envelopes not containing the required
information or not received by the deadline will not
be counted.

In addition, faxes, e-mails,.£.Q12ies, or anv. other nonoriginal ballot and/or envelo1:1es will not be acce12ted.

When a ballot is received, the City will verify the
information on the label by comparing it to our
property owner records. Once the information is
verified, the ballot will be separated from the
envelope. This is designed to provide a secret ballot
process, while still allowing the City to verify the
document.

The CitY. will not keeP. anv. record of how a 1:1articular 12roP.ertv. owner voted. The City will only record
whether or not a ballot was received from a
particular property.
4) Mail or hand deliver the City supplied envelope to City Hall (address below) as soon as possible.

City of Laguna Niguel
Attn: City Clerk
30111 Crown Valley Parkway
2nd Floor
Laguna Niguel, CA 92677
• {949) 315-0127 • 30111 Crown Valley Parkway, Laguna Niguel, California 92677 What is a speed hump?
A speed hump is a traffic calming device consisting of a rounded and raised area of pavement that runs perpendicular to the flow of traffic on a road.

Speed humps are usually between 3-4 inches high; 6-10 feet wide; with wheel cutout gaps in the raised mound to allow emergency vehicles to safely pass on either side of the mound.

Speed humps are used to slow road traffic to a range of 15-20 mph when crossing over the hump, without significant discomfort to the driver or passengers in the vehicle, and without damage to the vehicle.

What will the speed humps, signage, and street striping look like? The proposed speed humps to be installed, including signage, road painting and striping, will look like the speed humps installed on Adelanto Drive in Laguna Niguel (pictures below). 1 I Attachment A
What is the purpose of a speed hump?
Speed humps are installed as traffic calming devices on residential streets. Studies have shown that speed humps are effective at reducing the 85th percentile speed (the speed at which 85 percent of traffic is travelling at or above the speed limit) by about 6 mph; or to reduce driving speeds to 15-20 mph as the vehicle drives over the hump.

What are the advantages of speed humps?
Studies have shown that speed humps are effective at reducing passenger vehicle speeds to a range of 15-20 mph when crossing over the hump, as most drivers will slow down to travel over the hump at a comfortable speed so as not to jostle the vehicle or the passengers in the vehicle.

What are disadvantages of speed humps?
• They may create noise when the vehicle slows down to travel over the speed hump. • While vehicles might slow down over the hump, it does not prevent the driver from speeding on the road between speed humps.

Will emergency vehicles be able to drive over a speed hump? Yes. The Orange County Fire Authority has approved the installation of speed humps with wheel cutouts to allow a fire truck or emergency vehicle to travel safely through the speed hump without any delay. 2 I Attachment A

Streets Identified for Speed Hump Installation
• La Plata Drive
• La Vida Drive
• Palo Drive
• Via De Anza
• Via Larga
• Via Piedra Blanca
• Vista Plaza Drive
I\ = Proposed speed hump locations
~ (14 total). *Not precise locations

ATTACHMENT C
City Clerk1s Tally of Ballots
City of Laguna Niguel
Niguel Hills Neighborhood - Speed Humps
Tally of Ballots
2025
Total Ballots
Ballots Sent Returned Unreturned Ballots Ballots
495 301 194
A minimum of 50% of the ballots shall be returned for the overall voting process to be considered valid:

Total Ballots Sent
50% Requirement
495
248
Does the number of ballots returned meet the 50% requirement? YESl2:I NOD Ballot Results
Returned Ballots Valid Returned Invalid Returned
Ballots Ballots
301 255 46
A minimum of 67% of the valid individual ballots must support the installation:

Total Valid Ballots
67% Requirement
Valid Ballots Yes
255 151
No
104
255
171
Unreturned
Ballots
(="No" vote)
194
Was the required minimum met to approve speed humps? YES □ Reviewed and verified :

NO~

ATTACHMENT D
Concept Plans for Signing and Striping lmprovemefltS
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- Install Stop Sign (R1-1 I
= Install Yield to Pedestrians Sign (R1-6).
= Install Yield Here to Pedestrians Sign (R1-5),
-- = Install Yellow Centerline (Detail 22)
-- = Install Two-Way Le~Turn Lane (Detail 32)
(§l = Install 6" White Edge Line (Detail 278).

Note: Sandblast All Conflicting Striping
Note: Refresh All Existing Striping Not Conflicting with Proposed Improvements.

Note: Trim and Maintain All Landscaping to Ensure Adequate Sight Distance.
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R1-1 R1-6 R1-S
Note: Drawing not to scale~
Exhibit J-1
Conceptual Roadway Improvements (Segment 1 & 2)
La Plata Drive from Crown Valley Parkway to Vista Plaza Drive

NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL ENGINEERING/YI :,,,,;r,,1/1/u///)'//ffn:w;,¼/,;,/,l/.,Mh'h,Wl///,,Z;'/l/l//h')/&/////,-},.;,.,;;.w111,1,;wJ'/,W.1;i,~/7/,1.1///l,,-'U,;)l,/:M;,;;;.,0-;,1//.·WkX7hl/lJ'///1,Y1/.W/'//ll!'-',Wn.11///d//:X·Y&'/////////n.1/,i;-Y///,Wh#/1n/ /I/////Q.,YN'/,(~,Y/.M,'f,////,1i7,i'///// YI/N'lh.1/lh»Yl//~/ll////l/n.•W/40-X,;t,l#/,W/ - ,- --u;, ·1,, = Install Stop Sign (R1-1).
)I· = Install Stop Ahead Sign (W3-1 ).
je = Install Yield to Pedestrians Sign (Rl-6)
je - Install Yield Here to Pedestrians Sign (R1-S),
-- = Install Yellow Centerline (Detail 22)
@ = Install 6" White Edge Line {Detail 27B).
(ID = Install S10p Bar.

Note: Refresh All Existing Striping Not Conflicting with Proposed Improvements
Note: Trim and Maintain All Landscaping to Ensure Adequate Sight Distance,
• <t> [Yl lvl· ~ liJ ~i=,.

Rl-1 W3-1 R1-5 R1-6
Note: Drawing not to scale,
Exhibit J-2
Conceptual Roadway Improvements (Segment 3)
La Plata Drive from Vista Plaza Drive to Via Larga
r--l' NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL I ~ 231 o 2023 01
#/l4'111!-:,w,w RI(! t~~,~~Nc ,;;1,vzMz:;(~;· w;:;;w.~w1.-,,:w ,,,,,,;x1//.¼W/.wn>:r.,1,W1//11ff.,;,1u1,;,111#/¼W/.•;:,1//41,,;10:.,wHu-/1/1//l#//.YIH,#11111,1;;,;,,111»-/H,-g.J#/1#P,::w#/l//#1//Al#//////1///&M/&//.P//H//.11W.W1.>AW1,w/.1,w1»-11/A'1#1/1,--;,/1/ ,171!-7/,Wl//#11/1///H;:W7kXY//.0'//#H74W///../-"/hWl!-/1//

ATTACHMENT E
Traffic and Transportation Commission Staff Report,
April 23, 2025
To:

FROM:

DATE:

SUBJECT:

CITY OF LAGUNA NIGUEL

TRAFFIC AND TRANSPORTATION COMMISSION

AGENDA ITEM
Traffic and Transportation Commission Members
Kathy Kelley, Eng_ineering Services Manager/City Traffic Engineer April 23, 2025
Niguel Hills Neighborhood Traffic Study Recommendations

RECOMMENDATION
Staff recommends that the Traffic and Transportation Commission:

1. Concur with the proposed signing and striping improvements; and,

2. Recommend that the City Council approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood.

Page 2 ends

Commission recommended that the City Council approve a petition for speed bumps on La Plata Drive. In July 2016, the City Council directed staff to mail ballots to the affected residents to vote on the installation of speed bumps on La Plata Drive. Per the City's Residential Traffic Management Policy, "affected residents will include residents of the street and other residents in the area who use the street due to the circulation system and/or that would experience an increase in emergency response time." Ballots were mailed to residents of Via Larga, Via Pan, Via Cebolla, and La Plata Drive. The results of the ballot did not meet the minimum 67% support required to install speed bumps on La Plata Drive. The City Council certified the ballot results in September 2016.

In November 2016 and January 2017, traffic circle concepts were discussed at the Traffic and Transportation Commission meetings as a traffic calming measure on La Plata Drive.

This countermeasure was not explored further due to a lack of support from residents.

In December 2021, a resident requested traffic calming measures on La Plata Drive during the Public Comment portion of a Traffic and Transportation Commission meeting.

A series of public meetings in February, March, and April 2023 were held at City Hall and Grace Church on a development proposal to construct and operate a new assisted living and memory care community at Grace Church, located on La Plata Drive near Crown Valley Parkway. Resident comments and questions mainly focused on traffic issues in their neighborhood and concern that the project would have a significant impact on these conditions.

In response to the traffic concerns shared at the Grace Church development meetings, staff recommended edgeline striping for La Plata Drive at the April 2023 Traffic and Transportation Commission meeting. Edgeline striping is a traffic calming measure used to narrow the travel lanes for vehicles, thereby inducing drivers to lower their speeds.

Many of the residents who spoke during the public comment period were not in favor of the edgeline striping and requested alternative traffic calming measures on La Plata Drive, traffic calming measures on other nearby residential streets, and more public outreach to the neighborhood.

During the meeting, the Commission selected one of staff's alternative actions and directed staff to perform a comprehensive traffic calming study for the Niguel Hills

Page 3 ends

neighborhood in lieu of installing the recommended edgeline striping. The April 2023 Traffic and Transportation Commission staff report and meeting minutes are included as Attachments "B" and "C".

Unlike previous attempts to resolve issues one street at a time, this traffic study took a holistic approach to address the entire area.

Page4
• A survey indicated that cut-through traffic is not a significant issue, with most vehicles traveling within the neighborhood to access their home.

Additional data and information can be found in the Niguel Hills Neighborhood Traffic Study which is provided as Attachment "D".

Traffic Study Recommendations
The report recommended implementing a comprehensive traffic calming plan that includes the installation of 14 speed humps, signing and striping, overgrown landscape trimming, and focused enforcement. These measures aim to reduce vehicle speeds and enhance pedestrian safety.

Speed Humps
• The City's Residential Traffic Management Policy (RTMP) requires a vote by the affected property owners on proposed speed hump installations. Ballots were mailed on February 4, 2025 with a deadline to postmark or drop off ballots to City Hall by February 28, 2025. Each property owner in the entire neighborhood was asked to vote on whether or not they support the installation of all 14 speed humps strategically placed throughout the community.

The RTMP1 requires that a minimum of 50% of the ballots mailed are returned to the City. In this case, 301 of the 495 ballots were returned, exceeding the 248 ballot requirement for the 50% threshold. Of the 301 returned ballots, 255 ballots were valid. To move forward with the installation of the 14 speed humps, 67% of the valid individual ballots, or 171 ballots, must support the installation. There was a total of 151 "yes" ballots, approximately 59%, which is less than the minimum requirement to support the proposed speed hump installation. The City Clerk's Tally of Ballots is provided as Attachment "E".
1 The City's Residential Traffic Management Policy was initially adopted by the City Council in 1993 and was last updated in 2005.

Signing and Striping
• The study data concluded that striping improvements at the intersection of La Plata Drive and Vista Plaza Drive to enhance sight distance and safety are necessary.

Painted curb extensions, a shifted stop bar with a red reflective post, and a new high-visibility continental crosswalk are recommended at this intersection. The engineering design plan has been completed and is scheduled for installation this summer.

Page5
• The study also recommended centerline striping along streets such as Vista Plaza Drive and Via Portola that were too steep to be recommended speed humps but could benefit from an alternative traffic calming measure. • One-way stop signs were also recommended to regulate right-of-way at 10 intersections in the neighborhood where sight distance is limited. Installation of a stop sign on the minor street should be considered when a restricted view requires motorists to stop in order to adequately observe conflicting traffic on the through street.
• Edgeline striping and a two-way left-turn lane were recommended on La Plata Drive between Crown Valley Parkway and Vista Plaza Drive to narrow the extra wide roadway. The two-way left turn lane also provides a longer left-turn pocket for the future development at Grace Church.

Concept plans for the La Plata DriveNista Plaza Drive intersection improvements, stop sign placements, and edgeline striping are shown in Attachment "F".

Landscape Trimming
• The study identified several areas where private landscaping could be trimmed back to enhance sight distance at intersections. Staff will be coordinating with the individual homeowners to request trimming, which is not a unique type of request as this issue occurs on a regular basis citywide.

Focused Enforcement
• Enforcement "hotspots" were also identified during the data collection phase of the study. The Orange County Sheriff's Department has been providing enforcement, as time and resources permit, and will continue to provide enforcement to manage speeds in the neighborhood.

Staff recommends that the Traffic and Transportation Commission concur with the proposed signing and striping improvements, and recommend that the City Council approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood.

A "before" and "after" study will be conducted to evaluate the effectiveness of the proposed improvements. The study will be presented to the Traffic and Transportation Commission at a future meeting. Staff will continue to monitor conditions within the neighborhood and make additional recommendations or adjustments as required.

ALTERNATIVES CONSIDERED

1. The Traffic and Transportation Commission may decide not to concur with the proposed signing and striping improvements. This alternative will result in no changes to current conditions in the neighborhood.

Page6

2. The Traffic and Transportation Commission may decide not to recommend the installation of 10 one-way stop signs. This alternative will result in no changes to current conditions in the neighborhood.

FISCAL REVIEW
The cost to install the proposed improvements is approximately $150,000. There are sufficient funds in the Fiscal Year 2024-25 Public Works Department budget to cover the cost of the proposed improvements.

LEGAL REVIEW
No legal review is required for this report.

CONCLUSION
Staff recommends that the Traffic and Transportation Commission:

1. Concur with the proposed signing and striping improvements; and,

2. Recommend that the City Council approve the installation of 10 one-way stop signs within the Niguel Hills neighborhood.

Kathy K~
Engi~'r2ng Services Manager/
City lpmic Engineer
Attachments:

A. Location Map
B. Traffic and Transportation Commission Staff Report, April 26, 2023 C. Traffic and Transportation Commission Meeting Minutes, April 26, 2023 D. Niguel Hills Neighborhood Traffic Study
E. City Clerk's Tally of Ballots
F. Concept Plans for Signing and Striping Improvements

ATTACHMENT A
Traffic and Transportation Commission Agenda Item -
April 23, 2025
Location Map
Niguel Hills Neighborhood
Location Map

ATTACHMENT B
Traffic and Transportation Commission Agenda Item -
April 23, 2025
April 26, 2023 Commission Staff Report
To:

FROM:

DATE:

SUBJECT:

CITY OF LAGUNA NIGUEL

TRAFFIC AND TRANSPORTATION COMMISSION

AGENDA ITEM
Traffic and Transportation Commission Members
Kathy Nguyen, Engineering Services Manager/City Traffic Engineer April 26, 2023
La Plata Drive Traffic Calming Improvements

RECOMMENDATION
Staff recommends that the Traffic and Transportation Commission:

1. Concur with staff's proposed improvements; and,

2. Receive and file this report.

BACKGROUND
La Plata Drive is a 40-foot wide, double-loaded residential street that intersects Crown Valley Parkway. La Plata Drive is approximately half a mile in length with a downhill grade running from Via Portola to Crown Valley Parkway (Attachment "A"). The posted speed limit is 25 miles per hour (MPH). The street serves as the primary access road for more than 75 homes on La Plata Drive and several cul-de-sacs. The average speed on La Plata Drive is 27 MPH and the 85th percentile speed is 34 MPH. The average daily traffic on La Plata Drive varies from 750 vehicles near Via Portola to 1,200 vehicles near Vista Plaza. There has been only one reported collision in the past three years. The collision occurred in January 2020 where the driver was under the influence, which is a type of collision that cannot be corrected with traffic control devices.

In March 2016, residents contacted the City with additional concerns of high speeds along the same segment of La Plata Drive. In July 2016, the Traffic and Transportation Commission recommended that the City Council approve a petition for speed bumps on La Plata Drive. The City Council directed staff to mail ballots to the affected residents to vote on the installation of speed bumps on La Plata Drive. Per the City's Residential Traffic Management Policy, "affected residents will include residents of the street and

Page 2 ends

other residents in the area who use the street due to the circulation system and/or that would experience an increase in emergency response time." Ballots were mailed to residents of Via Larga, Via Pan, Via Cebolla, and La Plata Drive. The results of the ballot did not meet the minimum 67% support required to install speed bumps on La Plata Drive.

The City Council certified the ballot results in September 2016 (Attachment "B").

In November 2016 and January 2017, traffic circle concepts were discussed at the Traffic and Transportation Commission meetings as a traffic calming measure on La Plata Drive (Attachments "C" and "D"). This countermeasure was not explored further due to a lack of support from residents.

In December 2021, a resident requested traffic calming measures on La Plata Drive during the Public Comment portion of a Traffic and Transportation Commission meeting.

Since that meeting, oversize speed limit signs and speed limit pavement markings have been installed on La Plata Drive, which reduced speeds by nearly 2 MPH. Speed feedback trailers have been regularly deployed on La Plata Drive on a rotating basis.

Increased police enforcement of speeds resulted in as many as 19 citations in a single enforcement period. It has been observed that many of the speed violators reside within the La Plata Drive neighborhood. Outreach to the neighborhood by City staff including Orange County Sheriff's Department deputies has been increased.

At the request of a resident, City staff from Public Works, Community Development, and Police Services Departments met with several residents from the La Plata Drive neighborhood on April 20, 2023 to listen to their concerns and ideas for traffic calming in advance of the scheduled Traffic and Transportation Commission meeting on April 26, 2023. The residents' suggestions included speed bumps and full street closure to address their concerns related to speed and volume.

ANALYSIS
Since 2015, the City has looked into various traffic calming measures for La Plata Drive, from non-physical treatments such as enforcement, speed feedback trailers, centerline striping, signage, and speed legends to physical devices such as traffic circles and speed bumps. Another "tool" in the traffic calming "toolbox" to consider is edge line striping. Edge line striping is a traffic calming measure used to narrow the travel lanes for vehicles, thereby inducing drivers to lower their speeds. The Institute of Traffic Engineers Journal has covered several case studies that have used edge line striping as a traffic calming measure. Through several case studies in Orange County, California, it was noted that striping (edge lines, center lines, etc.) could successfully reduce speeds by 2 to 7 MPH.

For La Plata Drive, edge lines are proposed to narrow the vehicular travel lane widths from 20 feet to 11 feet. Edge lines do not impact on-street parking. The proposed striping improvements also include three sets of "SLOW' pavement markings to remind drivers to slow down. Warning signs that say "RADAR STRICTLY ENFORCED" are also proposed for installation on La Plata Drive.

The proposed edge line striping installation will be conducted in two phases (Attachment "E"). Phase I of the striping installation is from Via Valverde to Via Portola which the City

Page 3 ends

will install. Phase II of the striping will be installed on La Plata Drive from Crown Valley Parkway to Vista Plaza Drive as part of the Grace Church development project.

Laguna Niguel Municipal Code Section 7-4-202(b)(3) allows staff the authority to install traffic striping and warning signs. The proposed improvements are within staff's authority to implement immediately. Staff recommends that the Traffic and Transportation Commission concur with the proposed improvements and receive and file this report.

A "before" and "after'' study will be conducted to evaluate the effectiveness of the proposed improvements. The study will be presented to the Traffic and Transportation Commission at a future meeting.

ALTERNATIVES CONSIDERED

1. The Traffic and Transportation Commission may decide not to concur with staff's recommendation. This alternative will result in no changes to current conditions.

2. The Traffic and Transportation Commission may decide not to concur with staff's recommendation and direct staff to look into alternative traffic calming measures based upon feedback from the neighborhood. Studies may be necessary to support alternative traffic calming measures.

3. The Traffic and Transportation Commission may concur with staff's recommendation and direct staff to look into additional traffic calming measures based upon feedback from the neighborhood. Studies may be necessary to support additional traffic calming measures.

FISCAL REVIEW
The cost to install the proposed improvements is approximately $33,000. There are sufficient funds in the Fiscal Year 2022-23 Public Works Department budget to cover the cost of the proposed improvements.

LEGAL REVIEW
No legal review is required for this report.

CONCLUSION
Staff recommends that the Traffic and Transportation Commission:

1. Concur with staff's proposed improvements; and,

2. Receive and file this report.

Page4
City Traffi
Attachments:

A. Location Map

8. September 2016 City Council Staff Report
C. November 2016 Traffic and Transportation Commission Staff Report and Meeting Minutes
D. January 2017 Traffic and Transportation Commission Staff Report and Meeting Minutes
E. Proposed Improvements on La Plata Drive

ATTACHMENT A
Traffic and Transportation Commission Agenda Item -
April 26, 2023
Location Map
La Plata Drive
Location Map

ATTACHMENT B
Traffic and Transportation Commission Agenda Item -
April 26, 2023
September 2016 City Council Staff Report

CITY OF LAGUNA NIGUEL

AGENDA ITEM

CITY COUNCIL
To: Honorable Mayor and Council Members
SEPTEMBER 20, 2016
FROM: Nasser Abbaszadeh, Director of Public Works/City Engineer SUBJECT: Ballot Results for La Plata Drive Road Bumps
SUMMARY: On July 19, 2016, the City Council approved a petition for road bumps on La Plata Drive as recommended by the Traffic Commission. As a result, the City Council directed staff to mail ballots to property owners to vote on the installation of road bumps on La Plata Drive. On August 16, 2016, the votes were tallied. The results of the ballots did not meet the minimum 67% support required to install road bumps on La Plata Drive. It is recommended that the City Council certify the results of the ballots.

BACKGROUND
La Plata Drive is a 40 foot wide, double loaded residential street that intersects with Crown Valley Parkway. The street is approximately 1/2 of a mile in length with a downhill grade running from Vista Plaza (north) to Crown Valley Parkway. The street serves as the primary access road for the 75+ homes on La Plata Drive and several cul-de-sacs. La Plata Drive also serves as a bypass to other neighborhoods which indirectly connect with Golden Lantern.

The residents on the street experience similar conditions to those on other residential collector streets such as La Hermosa Avenue, Paseo del Campo, Hillhurst Drive and Adelanto Drive. These streets carry higher traffic volumes, and sometimes higher rates of speed, compared to typical residential streets that only serve the immediate residents.

On June 16, 2015, the City Council approved the installation of centerline striping as a means to apply traffic calming to La Plata Drive to help reduce speeds. While there was an initial reduction of speeds with this striping installation, subsequent traffic studies indicated that those reductions were lost. Residents of the area revisited the idea of requesting road bumps on La Plata Drive and submitted a petition to the Traffic Commission on June 22, 2016.

On July 19, 2016, the City Council approved the petition for road bumps on La Plata Drive as recommended from the Traffic Commission. As a result of the approval, the City Council directed staff to mail ballots to affected property owners. A copy of the July 19, 2016 Meeting Minutes and previous City Council Report (See Attachments A and B) are included.

Ballot Results for La Plata Drive Road Bumps -Agenda Item 9/20/2016

ANALYSIS
Voting Results
Page2
The next step in the process to install road bumps on La Plata Drive was for the individual property owners in the affected area to vote by ballot for the road bumps.

Per the City's Residential Traffic Management Policy:
" ... the City will conduct a vote of the "affected residents" asking them to vote "yes" or "no" on the proposed road bump installation. "Affected residents" will include the residents of the street and other residents in the area who use the street due to the circulation system and/or that would experience an increase in emergency response time."
The ballot vote was conducted between July 20, 2016 and August 12, 2016. The votes were counted and tabulated by the City Clerk's Office on August 16, 2016 (See Attachment C). The results of the vote were as follows:

Ballots Ballots Yes No Invalid
Mailed Received Votes Votes Votes
91 67 24 (36%) 42 (63%) 1
The City's Residential Traffic Management Policy requires that a minimum of 50% of the ballots mailed are received by the City. In this case, 67 ballots were returned which exceeded the 45 ballots required. In addition, 67% of the ballots returned must support the installation in order for the City to install the road bumps on La Plata Drive. In this case, the "yes" votes were only 36%, which is less than the 67% required to support the proposed road bump installation.

Current Enforcement
Since the process for road bumps process began on La Plata Drive, some changes have occurred to enhance enforcement in residential areas. Police Services has acquired a new motorcycle officer, which provides the City with more patrol. Motorcycle officers are less noticeable to the average driver. One observable constant is that drivers change their behavior when they notice a full sized police vehicle. With a motorcycle officer, drivers are not as readily influenced.

Since the addition of centerline striping in June 2015, Police Services has received more requests for patrol on La Plata Drive. In meeting these requests for enforcement, there have been two (2) citations on this segment of La Plata Drive within. This may have aided in the reduction of speeding vehicles documented after the striping installation.

Typically, visits by Police Services provide a level of awareness to the residential area as a whole.

Drivers may perceive that once Police Services visits the area, they will return. The City will also Ballot Results for La Plata Drive Road Bumps -Agenda Item 9/20/2016 Page3 continue to deploy radar trailers and within this neighborhood in a coordinated effort with enforcement patrol.

Conclusions
The City had completed several steps through the use of signing and striping prior to the vote for road bumps on La Plata Drive. All these steps to apply ''traffic calming" measures were incremental as the City's Residential Traffic Management Policy for concerns regarding speed recommends. Staff will continue to examine options to calm traffic on La Plata Drive and throughout this neighborhood. Traffic calming is a system of design and management strategies that aim to balance traffic on streets with other uses. It is founded on the idea that streets should help create and preserve a sense of place that their purpose is for people to walk, stroll, and look alongside cars. The tools of traffic calming take a different approach and include techniques designed to lessen the impact of motor vehicle traffic by slowing it down, or literally "calming" it.

This helps build human-scale places and an environment friendly to people on foot.

FISCAL IMPACT
None.

RECOMMENDATION
That the City Council certify the results of the ballot vote and direct Police Services to continue to provide enforcement as time and personnel permit.

PREPARED
BY:

SUBMITI'ED
BY:

Edgar Abrenica
Associate Civil Engineer
Nasser Abbaszadeh
Director of Public Works/City Engineer
Ballot Results for La Plata Drive Road Bumps -Agenda Item 9/20/2016

REVIEWED
BY:

REVIEWE
BY:

Attachments:

A. City Council Meeting Minutes
,.

B. City Council Agenda Item - La Plata Road Bump Request C. City Clerk's Ballot Voting Verification
D. Residential Traffic Management Policy excerpt
Page4

ATTACHMENT A
July 19, 2016 City Council Meeting Minutes
re calming methods be sent back to the Traffic Commission for re-evaluation.

She ested that residents on both Vista Plaza Drive and La Vida Driv included in • pacted properties report and be allowed to vote.

Michael Curtis, reside , • uired about the trees at Cro Road and Ivy Glenn that wer down.

City Manager Foster r
trees and they had to
Mark Goodman, • nt, referred to the minutes of une 7, 2016 City Council m • under Item No. 3 on the Consent Calendar. Mnlo.a:onuested that the ents he and Mayor Pro Tern Slusiewicz made on the Calve perty be in verbatim format.

CONSENT CALENDAR
Council Member Gennawey pulled Item No. 7 for discussion. Mayor Pro Tern Slusiewicz pulled Item No. 3 for discussion.

A MOTION was made by Council Member Capata, seconded by Council Member Minagar, to approve the remainder of the Consent Calendar as presented.

Motion carried 5-0.

1. Warrants of July 5, 2016 and July 19, 2016
Approved as written.

2. Payroll Summary Registers
Approved as written.

4. Investment Report as of May 31, 2016
Received and filed the City of Laguna Niguel Investment Report as of May 31, 2016.

5. Notice of Completion for Reconstruction of Diving Platforms - Cash Contract No. 15-11
a. Accepted as complete the Reconstruction of Diving Platforms - Cash Contract No. 15-11;
b. Authorized recordation of the Notice of Completion for said project; c. Authorized the release of the 5% retention thirty five (35) days after the recordation date of the Notice of Completion to the extent allowed by State Law; and
d. Approved the Final Closeout Agreement and authorize its execution by the City Manager.

City Councll Regular Minutes Page 2 of6 July 19, 2016

6. Agreement for Crossing Guard Services with All City Management Services, Inc.

Approved, and authorized the City Manager to execute the Agreement with All City Management Services, Inc. for three years, including two one-year options.

8. La Plata Drive Road Bump Request
a. Accepted the petition of residents on La Plata Drive for the request of road bumps;
b. Directed staff to mail the ballot measure to the impacted area; and c. Directed Police Services to continue with enforcement as time and personnel permits.

9. Award of Construction Contract for the Bear Brand Park Soccer Field Synthetic Turf Replacement - Cash Contract No. 16-06
a. Awarded the Contract to construct the Bear Brand Park Soccer Field Synthetic Grass Replacement Project - Cash Contract No. 16-06 for the Base Bid amount to SprinTurf LLC., with the rejection of the Add Alternates; and, b. Authorized the City Manager to sign the-Contract.

10. Appointment of the Honorable Jonathan H. Cannon, Retired Judge of the Orange County Superior Court, to Serve as Hearing Officer for Nuisance Abatement Actions

3. a. Appointed the Honorable Judge Jonathan H. Cannon, retired Orange County Superior Court Judge, as a Hearing Officer for all hearings for the nuisance abatement action against 23511 Calverton Circle, Laguna Niguel; and b. Appointed Judge Jonathan H. Cannon to serve as Hearing Officer for other nuisance abatement matters that may arise in the future.

Mayor Pro Tern Siu • Ise the minutes for
the June 7, 2016 City n'n!!Mil:~iltfl~ comments he and
Mark Goodman made rty. He asked City
Attorney Dixon if the m
after adding the verb
City Attorne • n stated that the minutes did not have to be broug,_~,.. or approval.

City Council Regular Minutes Paga3of& July 19, 2016

ATTACHMENT B
July 19, 2016 Agenda Item
La Plata Drive Road Bump Request

AGENDAITEM

CITY COUNCIL

CITY OF LAGUNA NIGUEL
To: Honorable Mayor and Council Members
JULY 19, 2016
FROM: Nasser Abbaszadeh, Director of Public Works/City Engineer SUBJECI': La Plata Drive Road Bump Request
SUMMARY: In June 2015, the City Council approved the installation of a centerline stripe to address concerns of speed along La Plata Drive from Via Portola to Vista Plaza Drive. Subsequent traffic studies indicated that the speeds along the segment of La Plata Drive decreased from July 2015 through January 2016. In April 2016, the City received a petition from the 1esidents of La Plata Drive with a request for road bumps. The initial review of the petition indicated that there was not a majority (67%) support for the installation of the road bumps. As part of the Traffic Commission meeting in June 2016, a new petition was submitted by the property owners of La Plata Drive. The Traffic Commission has recommended that the City Council accept the new petition, which now meets the required majority support from the neighborhood and direct staff to provide a ballot to the impacted area for the installation of the requested road bumps.

BACKGROUND
La Plata Drive is a 40 foot wide, double loaded residential street that intersects Crown Valley P&Ikway. The street is approximately 1/2 of a mile in length with a downhill grade running from Vista Plaza (north) to Crown Valley Parkway. The street serves as the primary access road for the 75+ homes on La Plata Drive and several cul-de-sacs (see Attachment A). The street also serves as a bypass to other neighborhoods which indirectly connect with Golden Lantern. The residents on the street experience simila1 conditions to those on other residential collector streets such as La Hermosa Avenue, Pasco del Campo, Hill.burst Drive and Adelanto Drive. These streets carry high traffic volumes, and sometimes higher rates of speed, compared to typical residential streets that only serve the immediate residents.

ANALYSIS
In March 2015, the City received concerns for speeding along La Plata Drive. The Traffic Commission reviewed a recommendation to install a centerline stripe from Vista Plaza Drive to Via Portola as a measure to lower rates of speed on La Plata Drive. A ballot was sent out by the La Plata Road Bump Request-Agenda Item 7/19/16 Page2
City to the property owners and confirmed that there was majority support for the installation of the traffic calming measure. Based on the ballot vote results, and subsequent Traffic Commission recommendation, the City Council approved the installation of a centerline along La Plata Drive from Via Portola to Vista Plaza Drive in June 2015. Initially, the installation of the centerline reduced the rates of speed from July 2015 through January 2016. The average speed prior to the centerline installation was 30 m.p.h. The average speed after the centerline installation was 28 m.p.h. In April 2016, residents contacted the City with additional concerns about vehicle speeds along the same segment oo La Plata Drive. Subsequent traffic studies indicated that those incremental reductions gained by the installation of the centerline were lost and that speeds had reached previous conditions.

Road Bump Eligibility Consideration
As part of the Residential Traffic Management Policy, there is the required criteria that must be met in order for a street to be considered for Road Bumps.

The basic Criteria for road bumps is:
a) The street is a local residential street as defined by the City of Laguna Niguel General Plan, and the California Vehicle Code.
b) The prima facie or posted speed limit is 25 m.p.h or less. c) The street is not a designated truck or transit bus route or a primary or routine access route for emergency vehicles.
d) The street is 1/4 mile or greater in length.

Operational Criteria for road bumps is:
a) The grade of the street must not exceed 6% (8% allowed if shorter than 200'). b) Minimum of 1,000 vehicles per day on the road.
c) Traffic surveys show 60% or more vehicles are exceeding the 25 m.p.h speed limit. d) Traffic sUIVeys show the 85th percentile to be 32 m.p.h. or greater.

La Plata Drive from Via Portola to Vista Plaza Drive meets both the Basic and Operational Criteria for consideration of the installation of road bumps.

Neighborhood Support Criterion
The City provided a petition to the residents to gather support for road bumps on la Plata Drive (Via Portola to Vista Plaza Drive). The petition was received in April 2016. There are a total of 29 homes on the segment of roadway on la Plata Drive. A total of 19 homes (67%) were required to be in support of the installation of road bumps to proceed with the request. Only 18 homes were in approval.

LaPlataRoadBumpRequest-Agenda/tem 7/19/16 Page3
At the June 22, 2016 Traffic CommiMion meeting, the residents submitted a new petition for review. The Traffic Commission directed staff to verify the new petition and recommended that the City Council move forward with the process of installing road bumps on La Plata Drive.

Staff has verified that the residents have met the minimum requirement for road bumps which is now at 72% in support of the proposed improvement.

Traffic Commission Review
On June 22, 2016, after reviewing all the available information along with testimony from residents on La Plata Drive, the Traffic Commission has recommended the following:
• The segment of La Plata Drive from Via Portola to Vista Plaza Drive meets both the basic and operational criteria for consideration of the installation of road bumps; and
• To continue with the process to install road bumps on La Plata Drive from Via Portola to Vista Plaza Drive.

The next step in the process will be for the individual property owners in the area to vote for the road bumps (via official ballot by the City). Once received, a minimum of 67% of the ballots mailed out are required to be received by the City Clerk's office. Fifty percent (50%) of the ballots received must be in support of the road bump installation in order to install the road bumps on La Plata Drive. The results of the ballot will be reported to the City Council for final determination on the installation of the bumps. The attached map indicates 91 households will receive ballots to vote on the bumps.

FlscAL IMPACT
The cost of the bumps is estimated to be $20,000. Funds have been appropriated in the FY16-17 Public Works Budget to cover the installation, as well the printing and mailing of the ballots.

REcoMMENDATION
That the City Council:
a. Accept the petition of residents on La Plata Drive for the request of road bumps; b. Direct staff to mail the ballot to the impacted area; and c. Direct Police Services to continue with enforcement as time and personnel permits.

La Plata Road Bump Request-Agenda Item 7/19/16

PREPARED
BY:

REVIEWED
BY:

Attachments:

Associate Civil Engineer
Nasser
~ Abbaszadeh
Director of Public Works/City Engineer
Terry Dixon
City Attorney
A Location Map
B. New Petition Form
C. Traffic Commission Meeting Minutes of June 22, 2016
D. Sample Ballot and Letter
E. Road Bump Ballot Area Map
Page4

ATTACHMENT A
(July 19, 2016 staff report)
Location Map
•
La Plata Drive
(Via Portola to Vista Plaza)
Location Map

ATTACHMENT B
(July 19, 2016 staff report)
New Petition Form
This petition shall only be drCldautl AFTER all the other steps outlined in this poliq have been implemented m,d evaluatu and • only AFTER the City has determined that 1M meet meets the minimum IJUalljicatums for tlle possible in6fllllatuJn of road bumps.

We, the below signed residents support the installation of road bumps on i....A Pl-:1rA. between )/ (A PO/Z. [P LA and Vt $TA PM 7-A . We understand the following:
1) The road bumps are 12 feet wide and 3 inches high and wilt be spaced approximately 250 - 400 feet apart (every 5-8 houses); 2) Signing and striping will be installed on or adjacent to the bwnps, which may result in signing and/or sniping being placed in front of my home;
3) The purpose of the bumps is to reduce average speeds of vehicles using the street to approximately 25 - 30 m.p.h.; 4} The bumps may increase emergency vehicle response time; 5) This petition is not being circulated by the City, but will be submitted to the City to gauge support; 6} 67% of the residents (households) on the street where the bumps are being considered for instaJlation must sign the petition in order for the City to complete the next phase of the process. 7) Submission of the -petition does not guarantee that the bumps will be installed; and 8) If all conditions/critetja are met the City will conduct a final vote on this matter. ~
Petition Circulator: Sr<" •- • , ....,, -.... - , - 7:'l· =- t., l.!3.L11,o Print Name ;ate
Page_/ or2
This petition shllll only be circulated AFTER 1111 die other steps olllllned In thl8 policy have been Implemented a,,d evaluaud anti only AUER the City ""8 utermmetl that the strut meets the minimum l/llallftcatlons for tlut possible lnstlllllltuJn of road bumps.

We, the below ~,:1ed residents support the installation of road bumps on l-A Pl-A TA between VIA Poll.TO L-'\ and V l GI. Pl-A z.A . We understand the following:
1) The road bumps are 12 feet wide and 3 inches high and will be spaced approximately 250- 400 feet apart (every 5-8 houses); 2) Signing and striping will be installed on or adjacent to the bwnps. which may result in signing and/or striping being placed in :front of my home;
3) The purpose of the bumps is to reduce average speeds of vehicles using the street to approximately 25 - 30 m.p.h.; 4) The bumps may Increase emergency vehicle response time; 5) This petition is not being circulated by the City, but will be submitted to the City to gauge support; 6) 67% of the residents (households) on the street where the bumps are being considered for installation must sign the petition in ordei- for the City to complete the next phase of the process. 7) Submission of the petition does not guarantee that the bumps will be installed; and 8) ff all conditions/criteria are met the City will conduct a final vote on this matter. ti£;&~~;c "i -•
Petition Circulator: -· , 1:err< - , -- - • ==- Print Name Gr;/,7 l1<e ~ I Date
Page Z.. of 3
Tl,ls petition shllll only be circulated AO'ER all tJ,e other steps outlined in t/lls policy have been Implemented and naluated and only AFTER the City has determined that du 1treet meets the mlnunu111 qualljkations for the possible inattdl4tlon of road bumps.

We, the below .!igned residents sqpport the installation of road bumps on~ P LA ,A and )/ I~ TA PL-A '2.,\ - . We understand the following:
between V f.A Po/Z. 1oLA
1) The road bumps are 12 feet wide and 3 inches high and will be spaced approximately 250- 400 feet apart (every 5-8 houses); 2) Signing and striping will be installed on or adjacent to the bumps, which may result in signing and/or sttiping being placed in front of my home; .
3) The purpose of the bumps is to reduce average speeds of vehicles using the street to approximately 25 - 30 m.p.h.; 4) The bumps may Increase emergency vehicle response time; 5) This petition is not being ciiculated by the City, but will be submitted to the City to gauge support; 6) 67% oftbe residents (households) on the street where the bumps are being con.sidered for installation must sign the petition in order for the City to complete the next phase of the process. 7) Submission of the petition does not guarantee that the bumps will be installed; and 8) If all conditions/criteria are met the City will conduct a final vote on this matter.

J
5·
L,.
:-i.~ .. ii:i:•. .\~,-
.:Jr
Petition Circulator: J:;:;ri~ C-LA- e.t::._
Print Name
J~~~, :,;1 ·
Signature
Date Owner or Occupant?
Date

Page 3 of 3 ends

ATTACHMENT C
(July 19, 2016 staff report)
Traffic Commission Meeting Minutes June 22, 2016
TRAfflC COMMISSION MINUTES -JUNE 22, 2016 Page4
parking. Staff stated that the steps that have been taken have reduced the number of parked cars in the neighborhood.

Mr. Gara stated that enforcing temporary no parking for six (6) months would be difficult if residents have overnight guests.

Mayor Davies asked how many cars are parking in front of the park; staff stated approximately 14 cars.

Vice-Chair Winstead stated that parking should be eliminated in front of the park when it is closed but stated that cars that currently park there will have to go somewhere else to park and therefore parking elimination in front of the park should not be recommended.

Commissioner Greenwood feels the new signs are working and would like to continue with the sipge and see what the impact is and then take other steps as needed.

A MOTION was made by Vice Chair Winstead, seconded by Commissioner Williams, to modify sigriage to maximum size, do a direct mailing outreach to residents and managers regarding the e1imination of parking in the neighborhood and bring this item back to the Commission in sixty (60) days.

Motion Carried S - 0.

Mayor Davies directed staff to talk to the managers and recommend they have sixty (60) days to check garages and warn them that permit parking could be the next step.

C.2 La Plata Road Bu.mp Request
Staff reported that last year La Plata residents requested traffic calming measures on La Plata Drive. Centerline striping was installed which temporarily slowed traffic.

A recent petition to install road bumps was submitted to the City but it did not meet the minimum requiremenL Staff stated that radar warning signage can be installed and residents would be allowed to submit another petition for future review.

OPEN PUBLIC COMMENTS
Daemon Clm stated that he was here a year ago with the same request. He feels children and the elderly are in danger, with some cars traveling 65 mph and 1,000 cars a day are using La Plata Drive as a cut through. Everyone signed the petition on La Plata Drive but was informed that some of the signatures were not owners. He collected 22 out of 29 signatures on a petition which is over the 67% requirement. He feels signage, striping and radar trailers are useless and is requesting road bumps. Mr. Clark submitted an updated petition to staff.

TRAFFIC COMMISSION MINUTES -JUNE 22, 2016 Page5
Eugene Price is a 40-year resident and several years ago his cat was hit by a car and later a dog. He feels it is a dangerous situation. Stated Weatherwood bas bumps and he would like smaller bumps placed on La Plata Drive. When he drives 25 m.p.h. he is tailgated all the way up the hill.

John Popoff is a resident since 1970 and has tried to get traffic to slow down since the street bas gone through. He feels striping has made the speeds worse and the striping is being ignored.

Stephen Appleford bas been a resident since 1973 and he has seen changes. When the street went through to Golden Lantern it became a cut through. It feels to him that he is living next to a freeway. There is a 25 m.p.h. sign hidden by the trees and requested a patrol officer be posted.

Melanie Clark feels she can't let her children play outside and signage is not going to slow down traffic. There is a blind curve and backing out is difficult Striping is not helping and they need police enforcement. She would like speed bumps installed on La Plata Drive because since bumps were installed on Adelanto Drive and traffic has moved onto La Plata Drive.

CLOSED PUBLIC COMMENTS
Mayor Davies asked how long it will take to verify signatures, staff stated one day.

Commissioner Williams stated installation would be recommended if signatures on the new petition are verified but speed bumps will not make it safe for children and the residents must remain diligent.

Commissioner Greenwood asked if the speed bumps on Adelanto Drive were working; staff stated they have not received any complaints.

A MOTION was made by Commissioner Williams, seconded by Vice Chair Winstead. if the signatures on the petition are verified and meet the threshold it is recommended that speed bumps be installed with City Council approval.

Motion Carried 5 - 0.

D. CHARTER SCHOOL UPDATE
Staff informed the Commission about a lease for two (2) charter schools that will be at the site of Crown Valley Elementary School starting in August 2016.

Ongoing discussions regarding potential traffic impacts to the adjacent neighborhood as well as circulation within the school property are taking place. .

Chairman Pow-aryan would like a recap after the next meeting with the representatives.

ATTACHMENT D
(July 19, 2016 staff report)
Sample Ballot and Letter
CITY of LAGUNA NIGUEL
30111 Crown Valley Parkway• Laguna Niguel. California 92677 Phone/ 949 • 362 • 4300 Fax/949 • 362 • -!340
July 20, 2016
OTYC0UNOL
Mayor Laurie Davies
Mayor Pro T em Jeay Slusiewia
Council Member Gary Capata
Council Member Elaine Gmnawey
Council Member Fred Minagar
SUBJECT: ROAD BUMP VOTE FOR LA PLATA DRIVE
Dear Property Owner:

At the request of residents on La Plata Drive, the City has recently reviewed traffic conditions on La Plata Drive between Vista Plaza and Via Portola in aca>rdance with adopted City traffic management policies. After evaluating other options, the road bumps may be appropriate to address the concerns of the residents about traffic speeds on La Plata Drive.

To detennine if road bumps should be installed, the City is conducting a vote of the affected property owners. In this case, "impacted" property owners include the property owners on I.a Plata, on all the cul-de-sac streets off La Plata Drive and Via Larga. Two property owners from Via Portola are included because they are directly adjacent to la Plata Drive. The enclosed maps show the voting area and the approximate locations for the five (5) bumps on La Plata Drive. The City has marked the approximate locations with white "dots" of paint on the curbs. Please take the time to carefully review the information and drive la Plata Drive. If you would like to see and drive over bumps that would give you a good sense of spacing, signing and striping you can go to a street named Adelanto Drive, which is north of La Plata Drive, just east of Crown Valley Parkway. However, please keep in mind that the bumps on Adelanto are an alternate design that are shorter in the direction of travel and will have gaps for emergency vehicles. Additionally, you can visit Kensigton Drive which is north of Niguel Road east of Alicia Parkway. If road bumps are approved for installation by the property owners and the City, much of the existing centerline striping and any reflective pavement markers would be removed from la Plata Drive prior to the bumps being installed.

When a ballot is received, the City will verify the information by oomparing it to our property owner rea>rds. Once the information is verified, the ballot will be separated from the envelope. This is designed to provide a secret ballot process, while still allowing the City to verify the document The City will not keep any record of how a particular property owner voted. The City will only reoord whether or not a ballot was received from a particular property.

The ballots are due no later than 5pm on Friday, August 12, 2016. The results will be tabulated and presented to the City Council at their regularly scheduled September 6Ut or September 20th meeting. H you have any traffic related questions, please oontact Edgar Abrenica, Associate Civil Engineer at (949) 362-4338 or by e-mail at [email protected]. If you have any questions about the ballot or the voting process or if you lost or did not receive any portion of the ballot package, please contact Eileen Gomez, City Qerk at (949) 362-4301.

What to Expect If Road Bumps are Installed
Based on data related to road bumps on Weatherwood, Kensington Drive and Adelanto Drive, please expect the following if the five (5) road bumps are installed on La Plata Drive between Vista Plata and Via Portola at the proposed spacing of approximately 300 feet:

General
1) A reduction in the number of vehicles exceeding the 25 m.p.h. speed limit. 2) A redaction in the average speed and the ssm percentile speed. 3) A reduction in traffic volumes. The aty believes that the lack of reasonable alternate routes and the fact that most of the traffic is generated locally will result in little to no change in traffic volumes. 4) The proposed road bumps may result in an increase in emergency response time ranging from as little as a few seconds to as much as 110 seconds for some residents. To ensure that these devices would meet the dual objectives of slowing general vehicular traffic while maintaining optimal emergency response times, the Orange CoUDty Fire Authority, which is responsible for providing fire suppression and emergency medical response in Laguna Niguel, recommended the use of the alternate road bump (with gaps) to try and rnioirnire the impact to response time.
5) Not all vehicles and drivers are equally affected by road bumps. Although the bumps will alter driving habits, some drivers will still travel faster than 25 m.p.h .. It is also likely that some drivers will drive closer to the curb or over the centerline in an attempt to minimire the affect of the road bumps. 6) Road bumps have a number of disadvantages including increased noise, general inconvenience to the driving public, an unattractive appearance, potential diversion of traffic to other residential streets and an increase in emergency response time (see #4 above).

Signing and Striping
1) Each bump will have striping on the bump and will have the word "BUMP" painted on the street in advance of the bump in both diredions.
2) There will be two signs and a post installed near each end of the limits OD La Plata Drive. The signs will be yellow with black letters and will read "Bumps Ahead" and there will be an advisory speed of "15 m.p.h.".
3) Much of the existing centerline striping and reflective markers will be removed prior to the installation of the road bumps. However, there will be some centerline striping OD either side of each bump to discourage drivers from driving over the centerline.
4) Most of the existing speed limit signs, any and all school related signs and painted legends will remain.

CITY of LAGUNA NIGUEL
30111 Crown Valley Parkway• Laguna Niguel. California 92677 Phone/ 949 • 362 • 4300 Fax/949 • 362 • 4340

OFFICIAL CITY BALLOT

OTYCOUNCIL
Mayor Laurie Davies
Mayor Pro T em Jerry Slusiewicz
Council Member Gary Capata
Council Member Elaine Gennawey
Council Member Fred Minagar

FOR LA PLATA DRIVE BUMP VOTE
INSI'RUCTIONS FOR COMPLETING THIS BALLoT:

This ballot shall be completed only by the property owner(s). In order for the ballot to be counted, you !!!J!!! do the following:
1) Indicate whether or not you support the installation by checking the appropriate box below (one vote per household/address).
2) Place this completed one (1) page ballot in the City supplied/self-addressed/stamped envelope and seal the envelope.
3) Fill out the label on the back of the City supplied return envelope in its entirety--all four lines:
1) property address; 2) printed name; 3) signature; and 4) date. 4) Mail or hand deliver the City supplied envelope to City Hall, so that it is received by the deadline.

BALLOTS MUST BE RECEIVED BX THE QTY CLERK'S OFFICE BY
FRIDAY. AUGUST 12. 201fi NQ LATER THAN 5:00 P.M.

Ballots and/or envelopes not containing the required information or not received by the deadline will not be counted. In addition faxes, e-mails, copies or any other non-original ballot and/or envelopes will not be accepted.

When a ballot is received, the City will verify the information on the label by comparing it to our property owner records. Once the information is verified, the envelope will be opened and the ballot will be separated from the envelope. This is designed to provide a secret ballot process, while still allowing the City to verify the document The City will not keep any record of how a particular property owner voted. The City will only record whether or not a ballot was received from a particular property. a I support the installation of five (5) road bumps on La Plata Drive.

Q I do not support the installation of five (5) road bumps on IJl Plata Drive.

OFFICIAL CITY BALLOT FOR LA PLATA DRIVE

ROAD BUMP VOTE
0 N
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Proposed Road Bump Locations
La Plata Drive
Proposed Bump Location
1"=300', e
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ROAD BUMP DETAIL •Nor T& ICALEXH1BtT A
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SECTION A-A

NOJ TO ICAL&
Note : Due to various installation factors, the final installed bump may vary in height from 3-3 ½ inches.
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this order of preference:
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2) behind the sidewalk
3) in the sidewalk
B~CK OF .CURB & GUTTER - •
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EXHIBIT C •DIAMETER•
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ATTACHMENT E
(July 19, 2016 staff report)
Road Bump Ballot Area Map
0 Road Bump Ballot Area
La Plata Drive
d
roposed Bump Location
D Impacted Properties
Street Prooertv Owners
la Plata 41
Via Pan 6
Via Cebolla 8
Vlalaraa 36
TotaJ Ballots 91
1°=300'. i

ATTACHMENT C
City Clerk's Ballot Vote Verification
Date: gjl~j/£
I I City of Laguna Niguel
La Plata Drive Ballots
Tally of Sealed Envelopes
STEP 1
Total Ballots Sent
50% Requirement
Received
(must receive requirment)
City Clerk Verification
(meets requirement)
City Clerk Verification
(did not meet requirement)
* 50% of ballots sent needs to be received to
consider this step meeting the requirement
91 46
Time:~ M
La Plata Drive Road Bump Vote
Su ooort Totals
~1 if~
Yes No
STEP 2 (blind vote)
67% Required 44
(must meet required ballots)
City Clerk Verification
(meets requirement)
(did
City Clerk
not meet
Verification
requiremen-t)-iZ)-----,--+-.
__A/ ~~ --
I
Invalid
Public Works Rcv'd/Date ~ <11 '2/ lb/zo1 P - - - -----

ATTACHMENT D
Residential Traffic Management Policy excerpt
RESIDENTIAL TRAFFIC MANAGEMENT POLICY PAGE 10
Basic Criteria

1. The street is a local residential street as defined by the City of Laguna Niguel General Plan, and the California Vehicle Code.

2. The prima facie or posted speed limit is 25 m.p.h. or less.

3. The street is not a designated truck or transit bus route or a primary or routine access route for emergency vehicles.

4. The street is ¼ mile or greater in length.

Neighbor Support Criterion
The requesting party shall submit a petition (on City supplied forms) in support of the installation with signatures from 67% of the residents of the street where the bumps are requested. Once the petition is received and verified, the City will perform additional analysis as deemed appropriate. If the City determines that the traffic conditions still meet the criteria established in this policy for the installation of road bumps, then the City will conducr a vote of the "affected residents" asking them to vote "yes" or "no" on the proposed road bump installation. "Affected residents" will include residents of the street and other residents in the area who use the street due to the circulation system and/or that would experience an increase in emergency response time. This process will involve looking at the system from an "average driver perspective"and would include residents that would likely use the street to access major arterials, shopping areas, schools etc .. The process will also involve a review of the OCF A findings regarding any potential increase in emergency response time. (The specific voting area and the determination of who is an "affected resident"will be reviewed and approved by the Traffic Commission and City Council.) The votes will be opened and tallied by the City Clerk's Office the next business day following the voting deadline. The results will be available the day of the vote count, baning any unforeseen circumstances. A minimum of 50% of the ballots shall be returned for the overall voting process to be considered valid. A minimum of 67% of the valid individual ballots must su port the installation. This super majority is designed to insure that the general support expressed during the petition phase remains consistent and to provide long term stability on the issue. A simple majority vote could cause frequent ''shifts" in support resulting in continuous "competing" petitions and requests for votes to install or keep or remove the bumps. If the voting results meet or exceed the 67% requirement and all other conditions are met, the City will begin the process to install the bumps in a time frame and manner as described in this policy. If the vote results fail to meet the criteria, then the City will continue to maintain any traffic control methods/devices that had been completed up to that date and to provide additional methods, if available and justified. Enforcement will continue to be used as time and manpower perm.its. A minimum of one year must pass from the date of the certification of the voting results before the City will accept another petition requesting a vote for road bumps on that same street or segment of street.

ATTACHMENT C
Traffic and Transportation Commission Agenda Item -
April 26, 2023
November 2016 Traffic and Transportation Commission
Staff Report and Meeting Minutes

CITY OF LAGUNA NIGUEL

AGENDA ITEM
TRAFFIC COMMISSION NOVEMBER 30, 2016
To: Traffic Commission
FROM: Edgar Abrenica, Associate Civil Engineer
SUBJECT: Neighborhood Traffic Calming Strategy for the La Plata Drive Neighborhood SUMMARY: Residents of the Greater La Plata neighborhood have requested a review of other

BACKGROUND
measures for calming traffic ·within the neighborhood. Staff has identified the potential use of traffic circles as a calming measure to mitigate concerns of speeding within the community, particularly on La Plata Drive. Community engagement and input is solicited on this potential option.

With the recent request for placement of road bumps on La Plata Drive, staff received input from other residents who were opposed to the installation of road bumps on La Plata Drive. Staff was asked to examine other potential traffic calming measures. Since the majority of residents polled voted against the installation of the speed bumps, staff has reviewed other options and invited the residents to discuss potential traffic calming strategies to address speeding vehicles concern throughout Lhi neighborhood.

Moving forward, community dialogue will be encouraged and input is solicited on the concept of introducing Traffic Circles lo La Plata Drive as a proposed traffic calming measure. If this proposal, or other concepts, gain(s) acceptance by the community, staff will follow the step spelled out in the draft Traffic Calming Toolkit to complete the process and installation of such traffic calming devices. This first order is to engage the community and start a dialogue on traffic calming strategies.

ANALYSIS
While the Traffic Calming Toolkit" is still a draft document most of the proposed tools have been in practice across the nation for many years. In response to requests to slow down vehicles on La Plata and adjacent roads (Attachment A), traffic circles are propo ed at the following four (4) intersections: La PlataNista Plaza Drive, La PlataNia Larga, La Plata/Via Portola and Via Portola/Weatherwood (Attachment C).

La Plata Neighborhood Traffic Calming Strategy -Agenda Item 11/30/2016 Speeds and Traffic Volumes on La Plata and Nearby Streets The following information was collected over the last few months:

Location Street Average
Speed (mph)
A La Plata E/O Vista Plaza (w) 30
B La Plata W /0 Via Pan 33
C La Plata W /0 Via Portola 26
D La Plata S/O Via Larga 25
E La Plata S/O Vista Plaza (e) 19
F Vista Plaza E/O Calle Vieja 28
G Vista Plaza W/O Calle Vieja 32
H Vista Plaza W/O La Plata (e) 27
I Vista Plaza E/O La Plata (e) 28
J Via Portola E/O La Vida 29
K La Vida mid-block 23
L Via Larga E/O La Plata (w) 20
M Via Larga W/O La Plata (e) 22
N Via De Anza E/O Via Baja Cerro 25
0 Weatherwood S/O Via Portola 24
p La Estrada S/O Vista Plaza 27
Q La Estrada E/O Via Piedra Roia 25
R Via Piedra Blanca E/O Vista Plaza 24
s Los Osos N/O La Estrada 22
T Los Osos S/O La Estrada 19
g5tn %
(mph)
36 40
31 30
24 36
40 34
35 35
42 26
28 30
29 35
30 32
30 24
Page2
ADT
(vehicles)
1,380
1,146
697
538
158
598
990
597
688
922
121
71 97
873
580
372
307
342
182
554
The data indicates that La Plata Drive has an average of about 800 vehicles traveling 27mph over its entire length in a day. The 8511t percentile for this road averages about 32mph. Vista Plaza has an average of 720 vehicles traveling 29 mph over its entire length. The 85th percentile for this road averages about 36mph.

Existing Traffic Control on La Plata and Nearby Streets La Plata Drive between Vista Plaza and Via Portola is a 40' wide street. There are traffic control devices such a speed limit signs, centerline striping to address concerns of speeding along U1i. segment On La Plata Drive, W/O Vista Plaza, the grade of the street as it approaches Crown Valley Parkway :i over 8% as the street widen out to 60 feet.

On Vista Plaza, due to limited sight distance, a three-way stop was installed at the intersection of Vista Plaza and Calle Vieja few year ago. Additionally, in 2015 at Vista Plaza's intersection with La EstradaNieja Piedra Blanca centerline striping was installed on all approaches to this three-way intersection to help channel vehicles.

On Via Portola there are existing speed legends on the pavement. There is also an existing stop sign on Via Portola at its intersection with La Plata Drive. At the intersection of Via Portola with La Plata Neighborhood Traffic Calming Strategy-Agenda Item 11/30/2016 Weatherwood I Via De Anza, there is yellow centerline to help channel vehicles.

On Via De Anza, there is an existing three-way stop at the intersection with Los Osos.

Accident Data on La Plata and Nearby Streets

Page 3 ends

Preliminary data indicates very low amount of collisions within the neighborhood of La Plata Drive and surrounding area since 2012. Three (3) collisions on La Plata, two (2) collisions on Vista Plaza, and one (1) collision on La Estrada have been reported. Two of the collisions on La Plata involved a failure to yield right of way. Of the two collisions on Vista Plaza and one on La Estrada only one (1) was related to speed. The data indicates that while speeding is a concern in the community, collisions related to speeding are historically low over the past few years on La Plata and nearby streets.

Proposed Traffic Calming Measure
The draft traffic calming toolkit includes the following option for traffic calming:

Traffic circles are raised circular medians that direct traffic counterclockwise within an intersection. Vehicles must change their direction of travel to maneuver around the circle. Traffic circles are typically controlled by "Yield" signage on all approaches. Traffic circles can help manage speeds, reduce volume, and improve sid street access. Orange County Fire Authority will comment on this feature, as it may impact response times. Traffic circles may contain low growth landscaping and/or a tree.

Positive Aspects
✓ Slows traffic as drivers maneuver around traffic circle ✓ Provides increased access to main street from side street ✓ Breaks up sight-lines on straight streets
✓ Changes the look of the street, making it more aesthetically pleasing Negative Aspects
✓ Possible driver confusion entering traffic circle after yielding to traffic already in circle ✓ Likely impact on left turns by large vehicles
✓ May impact emergency response
✓ Bicyclists must merge with traffic around circle
Installation of Traffic Circles - An Example
The City of San Clemente recently installed a traffic circle at the intersection of CalJe Deschecha and Avenida Estacion / Boga De La Playa (Attachment B), adjacent to its train station parking lot. The pictures show the actual traffic circle at the intersection as well as the a_pproach from Calle Deschecha.

La Plata Neighborhood Traffic Calming Strategy-Agenda Item 11/30/2016 Page4 Possible Next Steps
Pending further discussion and community input as the project will follow the approval process in the draft traffic calming toolkit, at the locations shown (Attachment C), the following steps may be taken to establish traffic cricles:

1. Geometric analysis and design;

2. Field installation of the circles with the use of oversized raised pavement markers and delineators;

3. Once established, allow nine months of operational time to assess effectiveness;

4. If effective, secure funding for permanent circles with raised curbs/vegetation/decorative elements; and

5. Install permanent raised islands.

FISCAL IMPACT
More information will follow on the cost of implementing specific strategies. Engineering and construction drawings may be required to finalize potential solutions in the neighborhood.

RECOMMENDATION
That the Traffic Commission
1) Invite stakeholder comments on the proposed strategy; and 2) Provide input and direct staff to finalize the selected concept for further discussion.

Attachments
A. Map of La Plata Drive and Surrounding Neighborhood
B. City of San Clemente traffic circle installation
C. Proposed concept for the greater La Plata neighborhood

ATTACHMENT A
Map of La Plata Drive and
Surrounding Neighborhood
(A-T) Locati ons o f Speed & Volume Surveys displayed on table on page 2 ~
~
La Plata Neighborhood Map
City of Laguna Niguel 1" 500' ~ /:~i.J
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ATTACHMENT B
City of San Clemente
Traffic Circle installation

ATTACHMENT C
Proposed concept for the
greater La Plata neighborhood
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0 CALL TO ORDER

CITY OF LAGUNA NIGUEL

TRAFFIC COMMISSION

MINUTES OF
NOVEMBER 30, 2016
The meeting was called to order at 7:00 p.m. by Chair Pouraryan.

Pledge of llegiance
The Pledge of Allegiance was led by Commissioner Greenwood.

Roll Call
Commission Members Present:

Chair Mike Pouraryan
Commissioner Joe Williams, Jr.

Commissioner Jay Greenwood
Commissioner Aniko Sherry
Commission Members Absent:

Vice Chair Stephanie Winstead
City Council Liaison Present:

Mayor Laurie Davies
City Council Liaison Absent:

Councilmember Fred Min.agar
City Staff Present:

Nasser Abbaszadeh, Director of Public Works/City Engineer Ziad Mazboudi, Senior Civil Engineer
Sgt. Jack Songer, Police Services
Edgar Abrenica, Associate Civil Engineer
Rita Moon, Recording Secretary
TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page2
A. PUBLIC COlVlMENTS
None
B. CONSENT CALENDAR
A.I Minutes of the Traffic Commis ion Meeting of .lulv 27. ?016 Chair Pouraryan asked if Staff had checked the lighting levels on Hidden Hills Drive.

Staff stated they would check the area.

A MOTION was made by Commissioner Williams, seconded by Commissioner Greenwood, to approve the Consent Calendar Minutes.

Motion Carried 4 - 0.

C. DISCUSSION ITEMS
C.1 Draft Traffic Calmin Toolkit
Staff presented the Draft Traffic Calming Toolkit to the Commission.

Chair Pouraryan asked staff how many neighborhoods were being considered. Staff stated that the La Plata Drive neighborhood was being considered at this time.

Commissioner Williams asked if a choker was used on La Plata Drive. Staff stated that a centerline was installed in 2015.

Mayor Davies asked that a timeline be added to the toolkit, staff stated that it would be incorporated. Chair Pouraryan asked about data on dollar amounts caused per accident.

Staff would look for costs to consider.

Staff stated that the final draft of the Traffic Calming Toolkit should be completed by February. Chair Pouraryan requested the inclusion of dollar amounts for each strategy.

A Power Point presentation was given by staff regarding the La Plata Drive neighborhood.

OPEN PUBLIC COMMENTS
Gene Price, a 40 year resident, thanked the Commission for recommending that the speed bumps be put to a vote. The bumps were not approved; "no" voters stated it would bring down property values. Mr. Price stated drivers were ignoring the radar trailers, wished cameras were installed in the trailers. He felt circles or the closing street might be helpful.

TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page3
Brent Krage was not in favor of speed bumps, he thought speeders were coming from Vista Plaza which had two (2) stop signs and were using La Plata Drive to avoid them. Placing speed bumps on La Plata Drive would cause drivers to use Via Larga to avoid them. Mr.

Krage felt a stop sign on La Plata Drive would be helpful along with educating residents.

Jeffery Johnson was in favor of a stop sign at Via Bajo Cerro but was against speed bumps.

Felt people were annoyed by speeders but not impacted by them. When he traveled down La Plata Drive, drivers were always on his tail following closely. Mr. Johnson did not think there was enough room on the street for circles and felt education would be helpful with data. He added a motorcycle officer should be there to give tickets.

Kim Middleton stated that she would like all of the streets involved when voting for speed bumps or other issues as what happens on one street affects the entire neighborhood.

Virginia Fite agreed residents were annoyed but they should ensure the safety of their pets and children and was against speed bumps.

Daemon Clark felt that the average speed was faster than 32 m.p.h. He was disappointed that the voters on La Plata Drive did not make the decision for speed bumps. Mr. Clark stated that he was not annoyed but concerned about safety. He was in favor of the circles if there was enough room. He further stated that he felt that cut-through traffic was the problem and educating the neighborhood would not help. Mr. Clark also stated he would like enforcement or stop signs installed. It had been two (2) years since this problem was brought up and nothing had been done. He believed that when the double yellow lines were installed it was a precursor to speed bumps. If speed bumps were not going to be installed, he would like them removed as they were an eye sore and not helpful in slowing down drivers. He did not want people who were inconvenienced, to be included with the residents on La Plata Drive that were impacted, making decisions for what happens there.

Maria Simrnsgeiger stated that she had two (2) girls and felt that road bumps gave a false sense of security. Since La Plata Drive serves other streets, residents on those streets had a right to speak. She thought that the buyer should beware when purchasing a home. She felt road bumps would diminish property values and she had lived in the community for 30 years and there had only been one ( 1) accident. She felt that one ( 1) accident and four ( 4) miles over the speed limit did not constitute spending taxpayer money and did not think there was room for circles. Ms. Simrnsgeiger received a ticket and felt enforcement works.

Paul Whitelock stated Adelanto Drive had speed bumps and drivers were using Monte Verde Drive to avoid them. If La Plata Drive gets speed bumps people would use La Vida Drive to avoid them. La Vida Drive residents should be included when making decisions for La Plata Drive. Mr. Whitelock asked if a barrier would be considered at Via Portola and Weatherwood to direct Weatherwood residents to Hidden Hills Road.

TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page4
Tom Gamer used to patrol the area. He parked at Via Pan and caught speeders going in both directions and gave lots of tickets. Mr. Garner thought the circles were dangerous and asked how much they cost. Staff stated they start at $2,000. Mr. Gamer felt they were dangerous on small streets and thought there would be a liability issue. He recommended stop signs instead of circles, as they work on Via de Anza, and a patrol unit that didn't answer calls was needed to park in the tract and issue citations for 4 - 5 hours.

CLOSE PUBLIC COMMENTS
Staff stated letters would be sent to the entire neighborhood that would include some data and encourage drivers to slow down.

Commissioner Williams asked if circles were viable and stated we would need to work with OCF A. If circles would be effective and if done properly they could enhance the neighborhood instead of lines or other things. He felt road bumps would affect La Vida Drive and they should be included in the decision making.

Commissioner Sherry asked if a traffic circulation study had been completed for this neighborhood. Staff stated no study had been completed. Commissioner Sherry then asked if we had a CEQA clearance for the project. Staff stated it was just a concept at this point. She thought if the concept was going to progress further she suggested a CEQA clearance be completed to bring out some safety and circulation issues.

Commissioner Greenwood asked why stop signs couldn't be used. Staff stated stop signs did not control speed and could cause more accidents and drivers would run them.

Commissioner Greenwood then asked if drivers would speed from circle to circle. Staff stated drivers did the same thing with speed bumps. Circles in a series generally calm traffic and drivers would slow down. Commissioner Greenwood asked if the speed bumps on Adelanto Drive were working. Staff stated that they have effectively reduced traffic on Adelanto Drive but different opinions have been voiced.

Mayor Davies stated they worked in Ladaro Ranch by slowing traffic but asked ifthere was room for them on La Plata Drive. Staff stated they could be configured to fit. Mayor Davies agreed stop signs did not work but she felt we need some solutions and asked how soon the first circle could be placed. Staff stated more input would be solicited from the community to bring back a favorable recommendation to the Commission and City Council for a final decision. The entire process could take about 2 - 3 months. The entire neighborhood would be contacted.

Commissioner Sherry stated Berkley, California, had circles of all sizes and that they were inconvenient but safe.

Commissioner Greenwood asked if we were certain there was enough room in the existing right-of-way. Staff stated that the circles would be within the existing right-of-way.

TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page 5
Commissioner Greenwood stated that if the circles worked on La Plata Drive, residents in other parts of the City would want their areas reevaluated. Staff agreed that other neighborhoods would come to request them.

Chair Pouraryan summarized that the process of a formal evaluation for circles would begin with additional community outreach. He asked Sgt. Songer if a deputy was available for enforcement. Sgt. Songer stated unfortunately no, due to the level of other commitments. Officers have been there when possible. Commissioner Greenwood asked about parking an empty police car in the area. Commissioner Williams stated it wouldn't be effective for long.

Mayor Davies asked what would be brought back in January. Staff stated letters would be sent out as soon as possible asking for additional community input. Staff also stated that the goal was to bring the Parking Program back in January and the La Plata Drive issue could also be placed on the agenda. Mayor Davies and Chair Pouraryan wanted these items brought back in January.

C.3 Annual Traffic Collisjon Analysis (20 13 Data)
Staff stated that annually traffic collisions were analyzed and indicated that there were no trends at signalized intersections in the City in 2013. Six (6) intersections were identified with more than four ( 4) collisions.

At the intersection of Camino del A vion and Bear Brand Road there had been three (3) rear end collisions. To mitigate this, Staff would install a "Signal Ahead" warning sign to alert drivers of the upcoming traffic signal.

Commissioner Greenwood thought the data showed a decrease in accidents, staff agreed.

Commissioner Sherry asked about statistics for Greenfield Drive and Crown Valley Parkway as she had witnessed a number of collisions. Staff stated this data was from 2013, the latest available from Office of Traffic Safety. Commissioner Sherry had problem exiting her street, Rancho de Linda, before and after school hours. Staff stated edgeline striping was installed on Rancho Niguel Road. Commissioner Sherry felt the striping on Rancho Niguel had helped reduce speeds.

Commissioner Williams stated southbound Moulton Parkway to eastbound Rancho Niguel Road had had an increased backup in the left tum pocket and stopping traffic in lane no. 1.

Commissioner Sherry added it was getting to be Service Level Dor F.

Staff stated synchronization would be occurring on Moulton Parkway/Golden Lantern and OCTA would look at the phasing of the intersection.

Chairman Pouraryan liked DUI arrests statistics.

TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page 6
A MOTION was made by Chair Pouraryan and seconded by Commissioner Williams, to recommend that the City Council receive and file this report.

Motion Carried 4 - 0.

D. CHARTER SCHOOL UPDATE - INFORMATIONAL
On September 19th staff met with representatives from both schools to discuss the Traffic Impact Study submitted to the City. There were two (2) recommendations; increase pedestrian crossing timing across Crown Valley Parkway and install "Keep Clear" legends on Crown Valley Parkway at Adelanto Drive. Currently Crown Valley Parkway is under a signal synchronization program but they were able to increase timing in the morning and in the afternoon it runs free.

Staff opted to install "Do Not Block" regulatory signs instead of the "Keep Clear" legends and it appeared to be working.

Staff observed that the internal circulation improved.

Mayor Davies asked if there had been feedback from residents. Staff had some feedback during field observations. Residents were not happy with traffic during peak times.

Staff stated that letters were sent out to the residents and it was effective. Commissioner Williams had noticed that traffic had improved over the last month on Crown Valley Parkway and Adelanto Drive, but the bike lane was often blocked on Crown Valley Parkway and drivers turning from Crown Valley Parkway onto Adelanto Drive were sometimes blocking lanes on Crown Valley Parkway.

E. CITY COUNCIL COMMENTS
Mayor Davies - Thanked staff for the Toolkit and she stated that she was looking forward to the parking study. She informed the Cammi ion that rhe A OC was doing a workshop on Dec. 13th regarding parking and hopefuJ]y they would come up with some solutions. Mayor Davis felt Police Services should not be the parking monitors for permit parking.

F. DEVELOPMENT UPDATES
Staff informed the Commission that:
♦ Crestavilla project was slowing down.
♦ Crown Valley Park project was completing work that was affecting the southbound lanes on Crown Valley Parkway.
♦ Alliance project in the Gateway Area would continue after the holidays.

TRAFFIC COMMISSION MINUTES -NOVEMBER 30, 2016 Page 7
G. POLICE SERVICES REPORTS
H.

Sgt. Songer informed the Commission that Police Services and staff met with some school principals and distributed an educational flyer regarding safety. He added that an additional motorcycle officer was approved and in October 426 moving and 140 non-moving tickets were issued.

TRAFFIC COMM! COMMENTS
Commissioner Greenwood - None
Commissioner Sherry - None
Commissioner Williams - Happy that the City was doing the parking survey to have a uniform practice and would help everyone in the long run.

Chair Pouraryan - Congratulated Mayor Davies on her reel ction. He then informed the Commj sion that on eptember 18th the City acknowledged the work done regarding Pedestrian Safety. In addition, Scouting for Food was held in Laguna Niguel and over 4,000 pounds of food was collected.

I. ADJOURNMENT
Chair Pouraryan adjourned the meeting at 8:36 p.m. to January 25, 2017.

ATTACHMENT D
Traffic and Transportation Commission Agenda Item -
April 26, 2023
January 2017 Traffic and Transportation Commission
Staff Report and Meeting Minutes

CITY OF LAGUNA NIGUEL

AGENDA ITEM
TRAFFIC COMMISSION JANUARY 25, 2017
To: Traffic Commission
FROM: Edgar Abrenica, Associate Civil Engineer
SUBJECT: Neighborhood Traffic Calming Strategy for the La Plata Drive Neighborhood SUMMARY: Residents of the Greater La Plata neighborhood had requested a review of other

BACKGROUND
measures for calming traffic within the neighborhood. Staff identified the potential use of traffic circles as a calming measure to mitigate concerns of speeding within the community, particularly on La Plata Drive. Community input was solicited on this potential option. Based on the written and oral input to staff, the neighborhood does not support the traffic circles as a solution at this time and requests police presence and enforcement.

With the recent request for placement of road bumps on La Plata Drive, staff received input from other residents who were opposed to the installation of road bumps on La Plata Drive. Staff was asked to examine other potential traffic calming measures. Staff reviewed other options and invited the residents to discuss potential traffic calming strategies to address the speeding concern throughout the neighborhood.

Community dialogue was encouraged and input solicited on the concept of introducing traffic circles to La Plata Drive as a proposed traffic calming strategy. The Traffic Circle concept was discussed at the November 30, 2016, Commission meeting with about twenty residents in audience. At the direction of the Commission two separate letters were sent to the entire neighborhood.

ANALYSIS
In response to requests to slow down vehicles on La Plata and adjacent roads (Attachment A), traffic circles were proposed at the following four (4) intersections: La Plata/Vista Plaza Drive, La Plata/Via Larga, La Plata/Via Portola, and Via Portola/Weatherwood (Attachment B).

La Plata Neighborhood Traffic Calming Strategy-Agenda Item 1/25/17 Speeds and Traffic Volumes on La Plata and Nearby Streets The following information was collected over the last few months:

Location Street Average
Speed (mph}
A La Plata E/O Vista Plaza (w) 30
B La Plata W/O Via Pan 33
C La Plata W /0 Via Portola 26
D La Plata S/O Via Larga 25
E La Plata S/O Vista Plaza ( e) 19
F Vista Plaza E/O Calle Vieja 28
G Vista Plaza W/O Calle Vi~ja 32
H Vista Plaza W/O La Plata (e) 27
I Vista Plaza E/O La Plata (e) 28
J Via Portola E/O La Vida 29
K La Vida mid-block 23
L Via Larga E/O La Plata (w) 20
M Via Larga W/O La Plata (e) 22
N Via De Anza E/O Via Baja Cerro 25
0 Weatherwood S/O Via Portola 24
p La Estrada S/O Vista Plaza 27
Q La Estrada E/O Via Piedra Roja 25
R Via Piedra Blanca E/O Vista Plaza 24
s Los Osos N/O La Estrada 22
T Los Osos S/O La Estrada 19
85m%
(mph)
36 40
31 30
24 36
40 34
35 35
42 26
28 30
29 35
30 32
30 24
Page2
ADT
(vehicles)
1,380
1,146
697
538
158
598
990
597
688
922
121
71 97
873
580
372
307
342
182
554
The data indicates that La Plata Drive has an average of about 800 vehicles traveling 27mph over its entire length in a day. The 85th percentile for thi road a erage about 32mph. Vi ta Plaza has an average of 720 vehicles traveling 29 mph over its emir I ngth. The 85111 J ercentiJe for this road averages about 36mph.

Existing Traffic Control on La Plata and Nearby Streets La Plata Drive between Vista Plaza and Via Portola is a 40' wide street. There are traffic control devices such as speed limit signs, centerline striping to address concerns of speeding along this segment. On La Plata Drive, W/O Vista Plaza, the grade of the street as it approaches Crown Valley Parkway is over 8% as the street widens out to 60 feet.

On Vista Plaza due to limited sigh~ distance a three-way stop was installed at the intersection of Vista Plaza and Calle Vieja few years ago. Additionally, in 2015 at Vista Plaza's intersection with La Estrada/Vieja Piedra Blanca, centerline striping was installed on all approache to this three-way intersection to help channel vehicles.

La Plata Neighborhood Traffic Calming Strategy-Agenda Item 1/25/17 Page3 On Via Portola there are existing speed legends on the pavement. There is also an existing stop sign on Via Portola at its intersection with La Plata Drive. At the intersection of Via Portola with Weatherwood / Via De Anza, there is yellow centerline to help channel vehicles.

On Via De Anza, there is an existing three-way stop at the intersection with Los Osos.

Accident Data on La Plata and Nearby Streets
Preliminary data i.ndicates very low amount of collisions within the neighborhood of La Plata Drive and sun-ounding area since 2012. Three (3) collisions on La Plata, two (2) collisions on Vista Plaza and one (1) collision on La Estrada have been reported. Two of the collisions on La Plata involved a failure to yield right of way. Of the two collisions on Vista Plaza and one on La Estrada onJy one (1) wa related to speed. The data indicates that while speeding is a concern in the community, collisions related to speeding are historically low over the past few years on La Plata and nearby streets.

Proposed Traffic Calming Measure
The traffic calming toolkit includes the following option for traffic calming:

Traffic cjrcles are raised circular medians that direct traffic counterclockwise within an intersection. Vehicles must change their direction of travel to maneuver around the circle.

Traffic circles are typically controlled by "Yield" signage on all approaches. Traffic circle can help manage speeds: reduce volume and improve side street access. Orange County Fire Authority will conunent on this feature as it may impact response times. Traffic circles may contain low growth landscaping and/or a tree.

Positive Aspects
✓ Slows traffic as drivers maneuver around traffic circle ✓ Provides increased access to main street from side street ✓ Breaks up sight-lines on straight streets
✓ Changes the look of the street, making it more aesthetically pleasing Negative Aspects
✓
✓
Possible driver confusion entering traffic circle after yielding to traffic already in circle Likely impact on left turns by large vehicles
✓ May impact emergency response
✓ Bicyclists must merge with traffic around circle
La Plata Neighborhood Traffic Calming Strategy-Agenda Item 1/25/17 Page 4 Neighborhood Dialogue and Response
At the direction of the Traffic Commission at its November 30 2016 meeting, staff sent out two separate letters (Attachment C) to the 332 households in the greater La Plata area. The first letter advised all the residents in the community to be mindful of their driving speeds.

The second letter provided cun-ent traffic data collected indicating average speeds and volumes within the community, and it provided details on the proposal to in tall traffic circles.

As of January 18, 2017 and creation of this report, staff has received 30 emails and phone calls.

Seventeen (17) residents did not support the proposed traffic circles. Six (6) residents did support the prnposed circles. Seven (7) residents did not indicate either support or oppo ition but included comments regarding traffic calming on adjacent streets.

The "Traffic Calming Toolkit" has emphasized community support for any type of a traffic control to calm traffic. Given that only a small minority only six at this point, has shown support for the proposed traffic calming measure, staff will not proceed with the next steps and consider the installation of traffic circles within the greater La Plata Neighborhood.

In response to resident requests, the Police Services has indicated they will provide regular enforcement as time and resources permit for the streets within this area.

FISCAL IMPACT
None.

RECOMMENDATION
That the Traffic Commission receive and file this report.

Attachments
A. Map of the greater La Plata Drive and Surrounding Neighborhood B. Proposed Concept for the greater La Plata Neighborhood C. Letters of correspondence to the greater La Plata Neighborhood D. Correspondence from the greater La Plata Neighborhood

ATTACHMENT A
Map of the greater La Plata Drive and
Surrounding Neighborhood
(A- T) Lo cations o f Speed & Vol ume Survey s displ ayed o n Lab le on pag e 2 La Plata Neighborhood !\~ap
City of Laguna I\Jiguel 1" 500'

ATTACHMENT B
Proposed Concept for the
greater La Plata Neighborhood
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ATTACHMENT C
Letters of Correspondence to the
greater La Plata Neighborhood
CITY of LAGUNA NIGUEL
30111 Crown Valley Parkway o Laguna Niguel, California 92677 Phone: 949 o 362 o 4300 Fax: 949 o 362 o 4340
December 8, 2016
Residents
La Plata Drive/La Vida DriveNia Portola
Via De Anza/Via Larga/Vista Plaza
Via PanNia Cebolla/La Estrada
Via Baja CerroNia Piedra Blanca
Laguna Niguel, CA 92677
Subject: Speeding Concerns within the La Plata Neighborhood Dear Resident:

CITY COUNCIL
Mayor Jerry Slusiewicz
Mayor Pro T em Fred Minagar
Council Member Laurie Davies
Council Member Elaine Gennawey
Council Member John Mark Jennings
City staff has been contacted about vehicle speeds in your neighborhood with requests to slow down traffic.

While neighborhoods look to the City and the Police for control of speeds, the role and responsibility of every driver needs to be stressed. Every community member should pay close attention to their individual driving habits.

As a reminder, the speed limit on any residential street is 25MPH. Since driving is a personal privilege, the City requests all drivers to accept their responsibility to drive cautiously in residential areas. Please pay attention to your speedometer while driving and be mindful of others on the road.

High traffic speeds, as well as inappropriate driver behavior, can impact entire neighborhoods. These conditions can also have a negative effect on pedestrians and bicyclists.

Every 13 minutes, someone dies on America's roadways. Fatalities include drivers, passengers, pedestrians, cyclists, and every road user. Car accidents hit young people especially hard; killing more people aged 5-34 than any other cause of death. More than 2.3 million people annually suffer serious injuries from accidents.

Please take the time to share this letter with all the drivers in your family, visitors, friends and any other drivers in your area, such as gardeners or delivery drivers and let them know that safety is an important issue in our community. For those drivers who continue to violate the speed laws, the Sherifrs Department will be in the area on a regular basis making stops and issuing citations.

Please contact me at EAbemica@cityofl agunan.iguel.om. or (949) 362-4338 with any questions or comments you may have.

Sinc~erely __ ,.

CJ-.-/lj,,.-
Edgar Abrenica
Associate Civil Engineer
CITY of LAGUNA NIGUELCITY COUNCIL
30111 Crown Valley Parkway • Laguna Niguel. California 92677 Phone: 949 ° 362 o 4300 Fax: 949 o 362 • 4340
January 3, 2017
Resident
La Plata Drive/La Vida/Via Po1tola
WeatherwoodNia De Anza/Via Larga
Vista Plaza/Via Pan, Via Cebolla
Laguna Niguel, CA 92677
Mayor Jerry Slusiewicz
Mayor Pro T em Fred Minagar
Council Member Laurie Davies
Council Member Elaine Gennawey
Council Member John Mark Jennings
Subject: Potential Construction of Traffic Circles to Calm Traffic in the La Plata Neighborhood
Dear Resident:

City staff has been contacted about vehicle speeds in your neighborhood with requests to slow down traffic.

Staff recently conducted speed studies on several roadways in your neighborhood and we show the following speeds (along with traffic volumes) in the greater La Plata neighborhood:

Street Average Speed g5th % Daily Traffic
(mph) (mph) (vehicles)
La Plata E/0 Vista Plaza (w) 30 36 1,380
La Plata W/0 Via Pan 33 40 1,146
La Plata W/0 Via Portola 26 31 697
La Plata S/0 Via Larga 25 30 538
La Plata S/0 Vista Plaza (e) 19 24 158
Vista Plaza E/0 Calle Vieja 28 36 598
Vista Plaza W/0 Calle Vieja 32 40 990
Vista Plaza W/0 La Plata (e) 27 34 597
Vista Plaza E/0 La Plata (e) 28 35 688
Via Portola E/0 La Vida 29 35 922
La Vida mid-block 23 42 121
Via Larga E/0 La Plata (w) 20 26 71
Via La rga W/ 0 La Plata (e) 22 28 97
Via De Anza E/0 Via Baja Cerro 25 30 873
Weatherwood S/0 Via Portola 24 29 580
La Estrada S/0 Vista Plaza 27 35 372
La Estrada E/0 Via Piedra Roja 25 30 307
Via Piedra Blanca E/0 Vista Plaza 24 32 342
Los Osos N/0 La Estrada 22 30 182
Los Osos S/0 La Estrada 19 24 554
Traffic Calming Strategies
With the recent request for placement of road bumps on La Plata Drive, staff received input from other residents who were opposed to the installation of road bumps on La Plata Drive. Staff was asked to examine other potential traffic calming measures. Since the majority of residents polled voted against the installation of the speed bumps, staff has reviewed other options and now invites you to discuss potential traffic calming strategies to address speeding concerns throughout the neighborhood.

Community dialogue is encouraged and input is solicited on the concept of introducing Traffic Circles to La Plata Drive as a proposed traffic calming measure. If this proposal, gains acceptance by the community, staff will follow the steps outlined below to complete the process.

The first order is to engage the community and start a dialogue on traffic calming strategies.

Proposed Traffic Calming Measures - Traffic Circles
Traffic circles are proposed at the following four ( 4) intersections: La PlataNista Plaza Drive, La Plata/Via Larga, La PlataNia Portola, and Via Portola/Weatherwood (Figure A. l).

Traffic circles are raised circular medians that direct traffic counterclockwise within an intersection. Vehicles must change their direction of travel to maneuver around the circle.

Traffic circles are typically controlled by "Yield" signage on all approaches. Traffic circles can help manage speeds, reduce volume, and improve side street access. Orange County Fire Authority will comment on this feature, as it may impact response times. Traffic circles may contain low growth landscaping and/or a tree.

Positive Aspects
✓ Slows traffic as drivers maneuver around traffic circle ✓ Provides increased access to main street from side street ✓ Breaks up sight-lines on straight streets
✓ Changes the look of the street, making it more aesthetically pleasing Negative Aspects
✓
✓
Possible driver confusion entering traffic circle after yielding to traffic Likely impact on left tu.ms by large vehicles
✓ May impact emergency response
✓ Bicyclists must merge with traffic around circle
Installation of Traffic Circles - An Example
The City of San Clemente recently installed a traffic circle at the intersection of Calle Deschecha/Calle Las Bolas/Boga De La Playa (Figure A.2), near its train station parking lot.

Possible Next Steps
Pending further discussion and community input, the following steps may be taken to establish traffic circles at the locations shown in Figure A.1:

1. Discussion and recommendation by the Traffic Commission;

2. Approval by the City Council;

3. Geometric analysis and design;

4. Field installation of the circles with the use of oversized raised pavement markers and delineators;

5. Once established, allow nine months of operational time to assess effectiveness;

6. If effective, secure funding for permanent circles with raised curbs/vegetation/decorative elements; and

7. Install permanent raised islands.

Public Input Process
The traffic circle concept was discussed at the last Traffic Commission meeting on November 30, 2016. About twenty residents attended the meeting and nine individuals spoke on this issue.

Different opinions were expressed on the circles, road bumps, and traffic concerns in general.

Through this letter, we are seeking additional input from the residents to contact us with your thoughts on this concept. This item will be presented to the Traffic Commission on January 25, 2017, at 7pm at the City Hall, located at 30111 Crown Valley Parkway, Laguna Niguel.

Please plan on attending the meeting to share your comments, or you can provide feedback via mail or e-mail.

We look forward to receiving your comments on the proposed traffic circle concept and, in the meantime, encourage everyone to slow down when driving! Please contact me at EAbrenica(@cit oflagunaniguel.org or (949) 362-4338 with any questions or comments you may have.

Sincerely,
Edgar Abrenica
Associate Engineer
Figure A. I
Figure A.'.?.

ATTACHMENT D
Correspondence from the
greater La Plata Neighborhood
Edgar Abrenica
From:

Sent:

Marie McComb <[email protected]>
Tuesday, January 17, 2017 5:49 PM
To: Edgar Abrenica
Subject: Traffic Circles
Edgar Abrenica, Associate Engineer
City of Laguna Niguel City Council
3011 Crown Valley Parkway
Laguna Niguel, CA 92627
Re: Traffic circles for La Plata Neighborhood
Dear Mr. Abrencia,
Thank you for your letter of January 3, 2017 requesting feedback on the traffic circles.

I am opposed to this concept and do not support adding traffic circles in our neighborhood.

As an original home owner, I would guess that the speed limit street signage is from the 70's. Newer, bigger/brighter/neon colored road signs more signs prominently placed would be beneficial. If possible, signage should start closer to Crown Valley as you travel up La Plata.

Based on the data collected, you could notify the highway patrol of the high speed locations, to issue tickets to those that do not abide by the law, rather than spending tax payer funds on traffic circles in a neighborhood.

Your letter was addressed to Jack McComb, who is deceased. Please address future communication to my attention.

Sincerely,
Marie McComb
24862 Via Larga
Laguna Niguel, CA 92677
1 Edgar Abrenica
From:

Sent:

To:

Subject:

Attachments:

Sterling Santley <[email protected]>
Tuesday, January 17, 2017 5:23 PM
Edgar Abrenica
Traffic In Niguel Hills
Traffic Letter.docx
Edgar, Please read the attachment.

Thank You
2 January 17, 2017
To: Edgar Abrenica
Edgar,
I appreciate you sending out the letter explaining Traffic Circles. I am for whatever it takes to reduce traffic speed in our Niguel Hills neighborhood. The chart showing daily traffic was informative, but I think that it would be more helpful if it also showed how many vehicles each day on each street exceed 35 miles per hour. If it could also show the time of day for the vehicles exceeding 35 mph it would be even better. I would think that this information would be helpful for scheduling Police Radar Traffic Enforcement. I believe a previous letter you sent out stated that there would be increased police presence to help control traffic speeds here but I have not seen it yet.

My main concern with the traffic circle plan is the same concern I had for the speed bump plan. Nothing is being done to slow traffic on Vista Plaza. I believe that by slowing traffic on La Plata but not doing anything on Vista Plaza will increase both traffic and speeds on Vista Plaza. The stretch of Vista Plaza between Piedra Blanca and Calle Vieja is flat and almost straight, and is used by some drivers almost like a drag strip. I would hope that whatever plan is put into place to "calm" traffic on La Plata will also be used on Vista Plaza. I have a radar gun that has clocked many cars on Vista Plaza going faster than 45 mph, and I would be very happy if the city would do something about it.

Sincerely,
J Sterling Santley
29421 Vista Plaza Dr
Laguna Niguel, CA 92677
Edgar Abrenica
From:

Sent:

To:

Subject:

Hello Mr. Abrenica,
[email protected]
Tuesday, January 17, 2017 2:16 PM
Edgar Abrenica
Traffic Circles in Niguel Hills
I am responding to your letter regarding traffic circles in my neighborhood, Niguel Hills. I am opposed to this.

I live at the top of the hil1, on Via De Anza, that would require me to drive around those circles 3 or more times a day. I drive down La Plata to CVP everyday.

That is four traffic circles that I must go thru, one way.

I don't believe this will fix our problem of speeders; I do however believe it will increase traffic collisions in our neighborhood; an
unintended consequence. Most of the speeders are of the age group of 25-35 yrs of age who live in the nearby apartment complexes who cut thru our
neighborhood. Why penalized everyone in Niguel Hills for a few speeders? That's why a motor cop sitting there a few times a week would fix this problem very quickly.

The onus is on the resident to teach their children to play safely when in their front yards and driveways. La Plata Park is right in the middle of our neighborhood so why can't these kids go and play there, where it's safe? I think the parents need to be a parent and their just not; this is a knee jerk reaction because someone is upset about controlling everyone. Live and let live.

I don't want the city to spend money on this when the city needs help in other areas such as the dog park and upgrading/ painting old buildings paving roads. It starting to get run down in Laguna Niguel. I don't believe this is as much as an issue as one person would like to make it. Most of my neighbors are not in agreement with these traffic circles.

Also, it lowers the values of our homes (Comps) just like speed bumps. We moved into Niguel Hills because it still has it's old charm from 45 yrs ago and we love that. Nice wide streets, no painted yellow lines, plenty of parking on the streets, and no traffic circles, etc.

Please consider the folks that are in opposition. Thank you for your time.

Regards,
AnnKGuba
25231 Via De Anza
Warning: Don't Use Probiotics Before You See This
Gundry MD
htt : third art offers.netzero.net GL3232 587e97f2b0e7517f21690st01 due 3 Edgar Abrenica
From:

Sent:

To:

Subject:

Hi Edgar,
Audrey Miller <[email protected]>
Monday, January 16, 2017 7:35 PM
Edgar Abrenica
Traffic Circles/Turnabouts La Plata neighborhood
I left a telephone message for you . My question is, who received your letter regarding the above subject? Did the residents on all of the streets involved receive your letter?? ie. approx. 11 streets?? Thanks,
Audrey
Audrey Miller
(949) 495-4956
4 Edgar Abrenica
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Dear Mr. Abrenica,
Phil Potter <[email protected]>
Monday, January 16, 2017 9:40 AM
Edgar Abrenica
Potential Construction of Traffic Circles to Calm Traffic in the La Plata Neighborhood Thank you for your recent letter describing the vehicle speed issue in my neighborhood. I routinely drive down La Plata and Via Portola and it is indeed difficult to maintain a reasonable speed even when consciously trying to slow down. After reading the letter I have a few thoughts to share which I will do through email in lieu of attending the Traffic Commission January 25. I will also touch on a similar subject near and dear to my heart which your office should be aware of.

First, I was a little surprised by the speed data in the table enclosed with the letter. The data indicate that the average speeds at most points in the neighborhood are meeting the speed limit or are only slightly above it. At only 3 locations was the average speed 30mph or greater, including only one of the three intersections with a proposed roundabout. I would imagine average speeds in this range are typical of most main streets in residential neighborhoods.

Second, the speeds in the 85th percentile also do not seem to indicate a problem at the locations of the proposed roundabouts. Indeed, the La Plata/Via Portola and La Plata/Via Larga location. have ~5111 percentile speeds in the lower 25% of all locations measured. I do admit that the La PlataNista Plaza location is more problematic due to the curve of La Plata making it difficult to detect traffic coming down the hill. However, based on the data presented it is not clear to me there is a major problem with vehicle speed in the area. Despite the difficulty of maintaining reasonable downhill speeds it seems that most residents are doing a good job.

Third, given points one and two, if it is determined by others that there is a speed problem, the proposed roundabout solution will do nothing to help. I have driven extensively in Europe where roundabouts are the most common form of intersection. In my experience the roundabout does not slow traffic AT ALL. The entire point of a roundabout is the efficient change of direction, i.e. changing direction without slowing down. There are many good reasons to use a roundabout, and some are detailed in the letter, but slowing traffic is NOT one of them. I have blown through small roundabouts like the ones proposed at 40mph without touching the brake.

The roundabout did not inhibit my speed in the least. Please do not waste money on this.

Fourth, again if it is determined by others that there is a speed problem, the only realistic solution is installation of speed bwnps. Yes, they are unpopular. But they are very effective. One has to look no farther than the slow driving and lack of traffic on Adelanto. I would support speed bump installation on La Plata and Via Portola if the consensus is that some type of action needs to be taken to slow traffic. The only way to change behavior is to appeal to self-interest. People have an interest in not messing up their cars. That is the only way to get the desired outcome of slower vehicle speeds.

To summarize: I don't think there is a speed problem. Roundabouts do not slow traffic. If the majority of residents on the affected streets think we have a speed problem, speed bumps are the only real solution. 5 Now to a related topic: the stop sign at the intersection of Via De Anza and Los Osos is routinely ignored completely. Very few drivers actually stop, most slow down considerably, but a decent percentage just blow through with a slight touch of the brake and many do not slow down at all. I work at home and witness this all day long. I don't know if drivers do this is because the stop sign was not always there, but whatever the reason it is pretty dangerous.

I contacted the city about the issue a couple years ago and they posted an officer for a few days. This did not have any effect on behavior. I would have no problem putting a speed bump 10 or 20 feet in front of the stop signs to force at least cursory slowing. Not sure how feasible that is or the procedure to put that request in.

What I do know if that the current situation is dangerous for the many pedestrians who walk the neighborhood.

A stop sign gives people a certain expectation of driver behavior. If that expectation is not met it can lead to injury or death. I am open to suggestions as to possible remedy.

Thank you for allowing me to voice my opinion on the traffic matters. One final thought: since the La Plata/Vista Plaza intersection is so tricky, one thing to help would be a mirror to aid visibility around the comer.

Placement would be on the west side of La Plata across from Vista Plaza and angled up the hill. This would not solve any speed issue but it would allow drivers on Vista Plaza to see up the hill and detect oncoming traffic sooner. Cost would be minimal and it would likely make turning onto La Plata much easier. Just a thought.

Phil Potter
25372 Via De Anza
6 Edgar Abrenica
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Harvey Williams <[email protected]>
Sunday, January 15, 2017 5:34 PM
Edgar Abrenica
Traffic Circles in La Plata Neighborhood
I do not want to see traffic circles in the neighborhood. That will not solve the problem of speeding traffic between where they will be in place. I would prefer to see speed bumps versus traffic circles.

Thank you
Harvey Williams
29402 Vista Plaza Drive
7 Edgar Abrenica
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Jeffrey Johnson <[email protected]>
Saturday, January 14, 2017 8:41 PM
Edgar Abrenica
Traffic Safety
Another slowing suggestion: place a couple of crosswalks where traffic circles are proposed, augmented by SLOW printed onto the pavement. . This would maintain the residential quality of the street while really slowing down traffic.
#2---the other day I counted the cars along Via Portola and LaPlata that did NOT have their front wheels pointed to the curb. At least NINE were pointed straight down hill!. There have been two crashes on Via Portola alone that have totaled 2-4 cars. Scary. Is this illegal, and can those cars be ticketed? Maybe a source of income for the city?
Jeffrey Johnson
25071 via portola 949-495-4981
8 Edgar Abrenica
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Dear Mr. Abrenica,
Geoff Middleton <[email protected]>
Saturday, January 14, 2017 3:50 PM
Edgar Abrenica
Niguel Hills Traffic Circle Proposal
Please see below my comments, concerns and questions relating to the proposed installation of traffic circles at various intersections in the La Plata neighborhood:

In more than 40 years of driving experience, much of it in the UK and Europe where traffic circles are prevalent, it is clear to me that traffic circles are an effective device for encouraging traffic to merge at busy intersections, but as a traffic calming device they are ineffective. While traffic circles, by your own statement, would tend to slow traffic as drivers maneuver around them, they would do nothing to prevent speeding between them, especially on the steep downgrades of Via Portola and La Plata. In my view, proactive enforcement of speed limits and issuing of citations would be more effective at reducing speeding. I often see police officers enforcing speed limits on Crown Valley Parkway, but have never seen them in residential streets in Niguel Hills.

What do you anticipate would be the impact to properties adjacent to the traffic circles? Will the curbs at these properties be painted red to restrict parking? I challenge your statement that traffic circles will make the streets more aesthetically pleasing. That might be the case with large scale traffic circles and only if they are then well maintained and kept free from litter and posted bills etc.

How many complaints about speeding have been received and from how many different residents? I Lhink this is important to know so as to assess the scale of the issue and therefore the cost effectiveness of the solution.

In your previous mailing, you mentioned that there would be a police presence and speeding drivers would be cited. How many citations have been issued and to how many different drivers?
If this proposal goes forward, it is my opinion that drivers not wishing to negotiate the traffic circles will instead take alternate routes such as La Vida and Vista Plaza thereby transferring the issue of speeding on La Plata elsewhere.

The negative aspects listed in your letter are all very valid and, to my logic, outweigh the perceived positives.

In conclusion, I oppose the proposed traffic calming measure.

Geoff Middleton
middleton1 [email protected]
9 Edgar Abrenica
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Dear Mr. Abrenica,
Kim middleton <[email protected]>
Saturday, January 14, 2017 3:18 PM
Edgar Abrenica
Re: Niguel Hills traffic circle proposal
Please see below my comments, concerns and questions relating to the proposed installation of traffic circles al various intersecLions in the La Plata neighborhood:

How many complaints about speeding have been received and from how many different residents? I think this is important to know so as to assess the scale of the issue and therefore the cost effectiveness of the solution.

In your previous mailing, you mentioned that there would be a police presence and speeding drivers would be cited. How many citations have been issued and to how many different drivers?
If this proposal goes forward, it is my opinion that drivers not wishing to negotiate the traffic circles will instead lake alternate routes such as La Vida and Vista Plaza thereby transferring the issue of speeding on La Plata elsewhere.

The negative aspects listed in your letter are all very valid and to my logic outweigh the perceived positives.

In conclusion, I oppose the proposed traffic calming measure.

Kim middleton
[email protected]
10 Edgar Abrenica
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Dear Mr. Abrenica,
Gary Ratliff <[email protected]>
Saturday, January 14, 2017 1:17 PM
Edgar Abrenica
Potential Construction of Traffic Circles
I have owned my home and lived on Via Piedra Blanca since 1984. I have never responded to a local issue before now.

I frankly don't see the need for either the road bumps (the worst idea) or the traffic circles. I do not see traffic issues being any worse then they were
30 years ago in our neighborhood. I feel that you may be swayed by a vocal minority. In my opinion, the taxpayer cost of this project could be
better utilized on other needs of our city.

Respectfully
Gary L. Ratliff
11 Edgar Abrenica
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Hello Edgar,
Lowell Van Wagenen < [email protected]>
Friday, January 13, 2017 4:06 AM
Edgar Abrenica
RE: La Plata Traffic Circles
Thank you for taking the time to speak with me. I have added on a few more comments below to what you recorded.

I have also contacted a few neighbors on Via de Anza, so you should expect to receive a few more comments by email. Some folks like the traffic circles, some not; most like speed bumps, but at least one does not. I definitely would not mind having a speed bump installed directly in front of my house, and perhaps another one closer to the stop sign at Los Osos & Via De Anza. One neighbor and I agreed that the City could start out installing fewer speed bumps, then add more if needed. Several folks stated that they did not want as many speed bumps as were installed on Adelanto, but realize that is a special situation because of the school. One neighbor suggested installing Bots (Botts?) Dots instead of the traditional speed bumps-apparently, Rolling Hills now has those. I am open to all kinds of alternatives-I just want something done, short of a police state.

And then after the City gets the speed on Via de Anza under control, it would be great if they would improve the egress from Via De Anza at Golden Lantern. That is an extremely dangerous way to get across oncoming traffic; many have almost been killed. And then it would also be nice if the City would find a way to permanently care for the private, raggedy-looking backyard hillsides of the Niguel Hills neighborhood that border both Crown Valley and Golden Lantern. Unfortunately, Laguna Niguel can only look as good as the least of us do.

Again, thank you for your patience in listening to my concerns.

MadelineVW
From: Edgar Abrenica [mailto:[email protected]] Sent: Thursday, January 12, 2017 8:52 AM
To: [email protected]
Subject: La Plata Traffic Circles
Dear Ms. Vanwagenen,
This email is just to summarize our conversation over the telephone on 1/10/2016 based on a letter you received regarding the possible installation of traffic circles in the Niguel Hills community. You have been a resident of the area for 40+ years living on 25291 Via De Anza. You can be reached by telephone at (949) 495-4177. a) You do not support the installation of traffic circles, especially at Via De Anza/Via Portola/Weatherwood since they will not be effective in slowing the traffic on the straightaway that is Via de Anza. b) You were part of the group of neighbors that petitioned the City for bumps on Via De Anza based on concerns for speed. Ultimately you felt it was economic discrimination due to the fact that property values on Weatherwood (who did receive bumps) were higher than the values on Via De Anz:a . The same economic discrimination can be seen in the Rolling Hills neighborhood which also received speed bumps. 14 c) You were very thankful for a letter the City sent in early December regarding speeding in the neighborhood and to slow down. However you felt its effectiveness could only be 2-3 weeks max before behaviors would revert back.
d) You are currently interested in seeing bumps installed on Via De Anza as you still feel even with the stop sign installation, cut through traffic is still present from Crown Valley to Golden Lantern and speeds remain high. e) By sending out law enforcement to the neighborhood, you feel they City could possibly be militarizing the streets. More accurately, I should have said: The City should not be turning the neighborhood into a "police state" which is more expensive to maintain, and will cause the neighborhood drivers to be unfairly penalized by paying expensive traffic fines-for example, about $485 per failure to come to a complete stop. This is another form of economic discrimination-the City would not be allowed to treat residents of the more expensive neighborhoods this way.

I hope I covered all the topics we discussed. Did I miss anything? If you could reply so that I can include your comments in an agenda item to be submmited to our traffic comission.

Thanks,
Edgar Abrenica
Associate Civil Engineer
City of Laguna Niguel
(949) 362-4338
[email protected]
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Edgar,
Hall Family <[email protected]>
Thursday, January 12, 2017 9:30 PM
Edgar Abrenica
Annemarie Hall
Traffic Circles in La Plata Neighborhood
Thanks for your letter last week regarding the roundabout concept for the La Plata neighborhood. We reside on Via Bajo Cerro and are very interested in the concept. Coincidentally, my wife and I are both landscape architects and are very familiar with traffic circles, roundabouts, and other forms of traffic calming.

We support the idea, but suggest that the roundabout from San Clemente not be used as a good example to represent to the community. I know that area well as I ride my bike past it often. It's quite large, and probably a bit out-of-scale with what we would need in our neighborhood.

I've attached a couple images from La Cresta in Dana Point, which are much smaller examples. They aren't the best, but they are local. I've also attached a couple renderings from a neighborhood retrofit that might be more in keeping with our neighborhood.

I do know that fire and emergency vehicle access is primary concern when introducing something like this.

Hopefully a concept can be achieved that provides for that, while being aesthetically pleasing and acceptable to those living adjacent.

Feel free to call or email me with any questions you might have. I will try to attend the January 25th meeting if my schedule permits.

Thanks!
Matthew Hall
25141 Via Bajo Cerro
949.637.1810
[email protected]
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19 Edgar Abrenica
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Dear Mr. Abrenica:
jim0801 <[email protected]>
Thursday, January 12, 2017 7:42 PM
Edgar Abrenica
City Council Members
Potential Construction of Traffic Circles to Calm Traffic in the La Plata Neighborhood After reading your Traffic Circle letter my biggest concern is with what you list as "Possible Next Steps".

When this calming issue was first addressed last year the home owners on some of the affected streets were given the opportunity to vote on the proposal to add Speed Bumps on La Plata Drive. That was a bad idea and it was rejected by the majority of residents polled. The latest calming proposal, Traffic Circles, is a really bad idea and should also be resolved using the same method previously used; a vote by the residents of all streets that will be affected.

What you have listed in your letter under "Possible Next Steps" contains no mention of a vote by affected residents. According to your letter a "discussion and recommendations by the Traffic Commission and then a vote by the City Council" will now resolve this issue. What has changed at City Hall that has produced a totally different approach to resolving the same issue? Why is a vote by those being affected been eliminated?
I understand that the Traffic Commission and City Council involvement is required at some level,but this is a neighborhood issue that should be resolved by the residents of the affected neighborhood, not the Traffic Commission and the City Council.

Thank You,
James Oliver
20 Edgar Abrenica
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Jim McGarvey <[email protected]>
Thursday, January 12, 2017 7:52 AM
Edgar Abrenica
Response to letter received on traffic circles
I have lived on Via De Anza since 2/1972 in the same house and I think the idea in the subject of traffic circles is ridiculous for our street and surrounding areas. They put a stop sign on our street in the wrong place instead of the end of the street at Weatherwood verses in the middle of Via De Anza. Yes the idea of ROAD BUMPS WOULD BE ACCEPTABLE like the ones on Weatherwood. My phone number is 9494950573 should you want to call us. Some of the biggest speeders on our street are the POLICE! Sincerely,
Jim and Jan Mc Garvey
25281 Via De Anza
Laguna Niguel, 92677
21 Edgar Abrenica
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DENNIS ARNTZ <[email protected]>
Wednesday, January 11, 2017 2:26 PM
Edgar Abrenica
Re: Speeding on Via De Anza
When I sent the 12/09 e-mail I used the address you had put on your letter which was EAbernica. Then when I looked at your last name it is spelled Abrenica. I cannot find the e-mail, but I do have a copy I will put in the mail to you. Essentially I'm in favor of a few, 3 to 4 moderate speed bumps between Los Osos and Via Portola,( not like the ones on Adalanto, more like the ones on Weather Wood) I think speed bumps would insure that all drivers maintain a reasonable speed but prevent the few from going 55 mph down our street. To me it is an inexpensive cost efficient solution for Via De Anza.

Traffic volume in my opinion is not an issue on our street, but speeding is.

Dennis Arntz
On Wednesday, January 11, 2017 12:52 PM, Edgar Abrenica <[email protected]> wrote:

Good afternoon Mr. Arntz,
To answer your first inquiry:

They are direction, yes.

N/O (north of)
S/O (south of)
E/O ( east of)
W/O (west of)
T 2
nd, • o answer your mqmry:

The daily volume is a total for both paths of travel at the location identified.

By the way, thank you for the correspondence, I will be including it with the Traffic Commission agenda item for the traffic circles.

On a side note, I do want to ask though, by looking at my inbox I see/saw no email from 12/9/2016 from you as you indicated. Can you please resend it? Im going to assume it was in response to the first letter I sent out early December? Thanks,
Edgar Abrenica
Associate Civil Engineer
City of Laguna Niguel
(949) 362-4338
[email protected]
From: DENNIS ARNTZ fmailto:[email protected]]
Sent: Wednesday, January 11, 2017 12:26 PM
22 To: Edgar Abrenica
Subject: Re: Speeding on Via De Anza
Edgar, would you please clarify the info on the speed and volume studies. What does E/O, S/O, W/O and N/O mean. Do they all mean East Of etc. You show Via De Anza E/O Via Baja Cerro as having a daily volume of 873 vehicles. Is that one way or both ways.

The issue on Via De Anza is not so much volume related as it is speed. Even well intentioned people speed on our street without realizing how fast they are going because the street is straight and long. Speed bumps would control their speed within the speed limit or close to it. Isn't that what speed limit signs are for. A speed bump is the same as a speed sign.

A few months ago a driver behind me at the stop sign at Los Osos became so irate when I actually stopped, they swung around me went through the stop sign and sped probably over 50 mph down Via De Anza.

Last year a motorcycle officer was assigned that intersection and stopped many people.

Thanks and let me know about the speed study.

Dennis Arntz
On Tuesday, January 10, 2017 2:40 PM, DENNIS ARNTZ <dcnarn1z<@flash.net> wrote:

I sent you an e-mail back on 12/09/2016 addressing what I think would be the least expensive, most cost efficient solution to speeding on Via De Anza. That is a few, maybe 3 temporary speed bumps placed between Los Osos and Via Portola, as a test to see if they will work. Weather wood street that connects with Via De Anza I believe has 4 speed bumps and it is a lot shorter than Via De Anza. Many of the people that speed are commercial trucks/vans etc. during the day. Via De Anza is about a half mile long.

I also received your recent letter about putting in traffic circles. That might be a solution to reduce speeding on La Plata but I don't think it would have any effect on Via De Anza.

Sincerely Yours
Dennis Arntz
23 Edgar Abrenica
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Dennis & Edgar,
Rick Costa <[email protected]>
Wednesday, January 11, 2017 10:17 AM
'DENNIS ARNTZ'; Edgar Abrenica
RE: Speeding on Via De Anza
Rick Costa.vd
Since 1994 when I purchased my home on Via De Anza, I have experienced the speeding cars which is not only a daily occurrence, but an all day every day and night occurrence.

Looking back at the last 21 years as a resident of Via De Anza, I have had two of my cars sideswiped in front of my house from front bumper to rear bumper and everything in between from hit and run speeding cars.

The neighbor at 25131 Via De Anza at the corner of Portola (25131Via De Anza) has had two speeding cars go airborne crashing through his fence and land in his backyard (twice) which could have easily killed someone.

I have witnessed other speeding cars go airborne at the same spot on Via De Anza between Via Bajo Cerro and Portola.

I have seen children playing nearly taken out by speeding drivers.

I have seen neighbors endangering themselves by walking into the street to get these people to slow down.

The stop sign at Via De Anza and Los Osos might as well not exist for the majority of the speeders that while they are speeding they also blow through that intersection they don't even touch the brake peddle.

We have had (and still have) a resident on Portola who speeds like a maniac daily on Via De Anza who has literally and intentionally driven his car into two residents reflective "slow man" free standing flagman signs and has been video taped and had the police
called on him numerous times to which the police visited him and did nothing. The same driver has also driven his car directly at me at a high rate of speed and turned his steering wheel at the last second playing games with my life to which I did not call the police
because he has already retaliated against my home with vandalism numerous times because I yelled at him to slow down. The same individual at retaliated against two other neighbors in the same fashion as my home, one of which sold his home to get away. The police already know
about this drug dealing, speeding criminal (with his extensive criminal background) and have done nothing. The same individual has given my children the middle finger as he drives by my home.

Do we have a serious problem with speeders .... ? You bet we do.

After over two decades of trouble with speeders, I have all but given up hope of having the city handle this problem.

Personally, I agree with the type of speed bumps that were added to the street Weatherwood. Asphalt speed bumps that allow you to drive the speed limit while traveling over them.

The speed bumps on Adelanto are terrible!!! If you don't want to damage your car, you really need to come to almost a complete stop which creates more noise and destroys cars shocks and other suspension parts. 25 That is my two cents.

Rick Costa
From: DENNIS ARNTZ [mailto:[email protected]]
Sent: Tuesday, January 10, 2017 2:40 PM
To: Edgar Abrenica
Cc: Rick Costa; Sally Costa; Daniel Dowden; John Verbeek; Diane and Lacey Larson; Carey Gouger; Judy Whitelock; Kitty Mehl
Subject: Speeding on Via De Anza
I sent you an e-mail back on 12/09/2016 addressing what I think would be the least expensive, most cost efficient solution to speeding on Via De Anza. That is a few, maybe 3 temporary speed bumps placed between Los Osos and Via Portola, as a test to see if they will work. Weather wood street that connects with Via De Anza I believe has 4 speed bumps and it is a lot shorter than Via De Anza.

Many of the people that speed are commercial trucks/vans etc. during the day. Via De Anza is about a half mile long.

I also received your recent letter about putting in traffic circles. That might be a solution to reduce speeding on La Plata but I don't think it would have any effect on Via De Anza.

Sincerely Yours
Dennis Arntz
26 Edgar Abrenica
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Rick Anderson <[email protected]>
Tuesday, January 10, 2017 3:45 PM
Edgar Abrenica
La Plata Traffic Circles
I am a homeowner that lives on La Vida Dr. If you install traffic circles on La Plata Dr, then La Vida Dr become the fast lane alternate route (which it already is for some drivers). I am not opposed to installing traffic circles on La Plata Dr, however in conjunction you need to also install speed bumps on La Vida Dr.

Thank you,
Rick Anderson
24991 La Vida Dr
28 Edgar Abrenica
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DENNIS ARNTZ <[email protected]>
Tuesday, January 10, 2017 2:40 PM
Edgar Abrenica
Rick Costa; Sally Costa; Daniel Dowden; John Verbeek; Diane and Lacey Larson; Carey Gouger; Judy Whitelock; Kitty Mehl
Speeding on Via De Anza
I sent you an e-mail back on 12/09/2016 addressing what I think would be the least expensive, most cost efficient solution to speeding on Via De Anza. That is a few, maybe 3 temporary speed bumps placed between Los Osos and Via Portola, as a test to see if they will work. Weather wood street that connects with Via De Anza I believe has 4 speed bumps and it is a lot shorter than Via De Anza. Many of the people that speed are commercial trucks/vans etc. during the day. Via De Anza is about a half mile long.

I also received your recent letter about putting in traffic circles. That might be a solution to reduce speeding on La Plata but I don't think it would have any effect on Via De Anza.

Sincerely Yours
Dennis Arntz
31 Edgar Abrenica
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Edgar,
Catalina Ramirez
Monday, January 09, 2017 4:25 PM
Edgar Abrenica
Traffic Circles on La Plata - Resident Request
Kate Anderson lives on Via Cebolla. She called about the letter you sent regarding the possible construction of Traffic Circles on La Plata.

She used to work for a Civil Engineer, and is requesting you provide her with the dimensions of the proposed traffic circles. Are they going to be taking out sidewalks, will it impact parking on the street.

She is unable to attend this month's meeting because she recently had surgery. You can reach her at 949-322-3862 or [email protected]
Thank you,
Catalina Ramirez
Account Clerk - Public Works
(949) 362-4337
[email protected]_ill]jguel.org
32 Edgar Abrenica
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Dear Ms. Anderson,
Edgar Abrenica
Tuesday, January 10, 2017 5:02 PM
'[email protected]'
Catalina Ramirez
La Plata Traffic Circles
Thanks for contacting the City regarding your concerns for the proposed traffic circles in your community.

The proposed traffic circles are a concept at this point. Actual design and street improvement plans have not been prepared yet. The letter you received was a sample of what a traffic circle would look like, not the actual one considered for use.

The intent ofthe letter was to introduce traffic circles as an solution to address concerns of speed in the greater La Plata community, and gauge support within the community. The idea was first introduced within a staff report to the Traffic Commission on November 30, 2016. The Commission's direction to staff was to reach out to the community.

The proposed traffic circles will not take any more right-of-way than what is existing today. Therefore, no sidewalk will be proposed to be improved/affected. There may be parking impacts near the proposed traffic circles where the City must comply with highway design standards (turning radii) required to accommodate moving vehicles as they traverse through the intersection containing a circle.

Again, the intent of the letter was to gauge support of a proposed traffic calming solution.

Should you have any other questions or comments, please feel free to contact me.

Sincerely,
Edgar Abrenica
Associate Civil Engineer
City of Laguna Niguel
{949) 362-4338
[email protected]
1 Edgar Abrenica
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Paul Whitelock <[email protected]>
Monday, January 09, 201710:49 AM
Edgar Abrenica
La Plata traffic circles
I believe that traffic circles on La Plata would not solve the problem bur just transfer it to other streets. I would be open to more signage and policing. I realize we are short on police hours but a swing by any chance they get would be a help slowing the traffic.

Respectfully,
W. Paul Whitelock
33 Edgar Abrenica
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Dear Mr. Abrenica,
Lynne Hart <[email protected]>
Monday, January 09, 2017 10:03 AM
Edgar Abrenica
[email protected]
Potential Construction of Traffic Circles
I am in receipt of your letter dated Jan 3 2017. Thank you for your thoughtfulness in communicating the issue.

We have lived on LaEstrada for 30 years. Niguel Hills is a wonderful neighborhood and the concerns of some of our neighbors is understandable.

I reviewed the data included in the letter. While I don't want to downplay the importance of following speed limits, I think the real problem is volume.

The volume of the top two streets is hundreds more than than the volume of the #3 and #4 streets. A closer look at the highest volumes suggests that those cars may be using Weatherwood/Portola/LaPlata to avoid traffic and lights on Golden Lantern on the way to Crown Valley. I'm sure you have considered this as a possible cause of the residents' dissatisfaction.

With that being said, I believe that mitigation efforts should be directed towards discouraging that route as a shortcut. I am from the East Coast where they still have plenty of traffic circles and they are a pain. Some communities have opted to remove the traffic circles. I am not in favor of placing traffic circles in the neighborhood.

The speed bumps on Weatherwood probably keep speed down, but they don't discourage folks from using the route as a shortcut.

Respectfully, I would suggest:
o Adding more speed bumps
OR
o Placing stop signs at or near the locations you have proposed traffic circles I think the stop signs have an Ockham 's razor quality and would probably be more economical than traffic circles.

Thank you for the opportunity for the residents to have input into this matter. I will try to attend the city meeting but I may be out of town.

Sincerely,
34 Lynne DellaVecchia
35 Edgar Abrenica
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Hello:

Stephanie Stoner <[email protected]>
Friday, January 06, 2017 3:31 PM
Edgar Abrenica
Brian Tatomir
Traffic Circles proposed for our neighborhood
Please pass along our feedback to those investigating the feasibility of a series of traffic circles in our neighborhood. I walk daily in this area and have noticed the negative effect of all the increased traffic going up the hill (after drop off at the school) from people trying to cut through this neighborhood in order to get to Golden Lantern. Many of these people have a careless disregard for the residents and drive at speeds in excess of what you recorded.

Upon reading your letter, our immediate response is that, if a series of traffic circles are installed one after the other on La Plata, these non-residents will enter the first traffic circle and then avoid further circles by continuing up Vista Plaza Dr. as they look for another way through. This will simply move the problem, which will just redirect all the speeding traffic from La Plata onto Vista Plaza and Piedra Blanca.

This isn't a solution to the problem caused by poor planning by the City of Laguna Niguel in agreeing to have more than twice as many students, (who generally don't live in the neighborhood), attending a school previously attended by mostly neighborhood residents. These problems could have been easily anticipated and avoided by the City. Now we, the residents, have been endangered and are being asked to solve a problem we had no part in causing!
It is difficult now to safely back out of my driveway on Vista Plaza Dr. as the sight lines up and down the street are impeded by parked cars on both sides .I can only imagine how much worse, and more dangerous, it would be if all that speeding traffic ended up on Vista Plaza Dr. I certainly hope that the City of Laguna Niguel will not take an action that will further endanger the residents of our neighborhood.

Why is the city not considering undoing this problem by rescinding this plan for the school that has all these non-residents driving here? Obviously, the neighborhood was not built to accommodate these numbers. Why wasn't a facility found within the area that could handle the resulting traffic from a school this size? In considering this problem, we would like you to consider the following question in your response to it:

The neighbors have reported the danger of this situation to the City of Laguna Niguel. Shouldn't the safety of local neighborhood residents carry more weight with the City than the convenience of commuters? Respectfully Yours,
Brian Tatomir
Stephanie Stoner
29455 Vista Plaza Dr.
36 Edgar Abrenica
From: Debbie Lima <[email protected]>
Friday, January 06, 2017 2:05 PM
Edgar Abrenica
Sent:

To:

Subject: Traffic Circles
Edgar,
I received the notification of public input to address traffic in my neighborhood. My name is Debbie Lima and I live on Vista Plaza. I run a business that is open into the evening and cannot attend.

These are my thoughts:

I used to live in Ladera Ranch, where we did have traffic circles and they did work. If the issues can be addressed, I'm supportive.

Here are the issues with them:

1. Most important is can a fire truck get to all the streets and does the fire department approve of this? If not, that is a showstopper.

2. Other big trucks will have difficulty as well. When I moved into Ladera Ranch, I had to pay a moving van extra money to move my stuff from the cross-country semi truck to a smaller truck to get into the neighborhood. I am hoping that the circle can be wide enough and the curb designed gently so a big semi can still get in for deliveries and things like that. A sloped/currved curb is much much better than a vertical curb so that if a vehicle goes up it a little, then no harm done and it makes it around even if some side wheels climb the curb a little bit.

3. Aesthetics: In Ladera we had a homeowners association to maintain them and they were pretty. Here we do not have an HOA (thankfully). So will it be planted and who will maintain it? I don't think we have any commonly maintained areas in this neighborhood. Can the city do it? Thank you- Debbie Lima
38 Edgar Abrenica
From:

Sent:

To:

Subject:

Dear Mr. Abrenica,
Arshang Ferdosian <[email protected]>
Friday, January 06, 2017 8:20 AM
Edgar Abrenica
Traffic Circles
Thanks for your letter about potential construction of traffic circles in the La Plata neighborhood. Unfortunately, I'm not able to attend the meeting about it, but as a resident of La Estrada Dr who is also a civil engineer, I have some comments about this subject that I'd like to share with you.

1. Installation of road bumps is a much simpler way to calm the traffic than traffic circles. They are more familiar to drivers; drivers know how to deal with them, whereas circles make a lot of confusion and may cause more accidents.

2. Construction of circles will cost more money and will use more space of the street.

3. Those vehicles that come from La Estrada/Via Piedra Blanca towards La Plata, as us, have two options:

I) turning left from Vista Plaza to La Plata and going all the way to Crown Valley, or:

II) staying on Vista Plaza and turning right at the end of it to La Plata toward Crown Valley.

In the case of construction the circles shown on the map, those vehicles will just choose option (II) to avoid two of the circles. This will just switch the problem of speed from La Plata to Vista Plaza, and is not an ultimate solution to calm traffic in the neighborhood.

My suggestion is reconsidering the construction of speed bumps on both La Plata and Vista Plaza. The speed bumps which are now on Weatherwood street seem to work well, calming traffic in the Weatherwood neighborhood. Why shouldn't they work in the La Plata neighborhood as well? Best regards,
Arshang
39 Edgar Abrenica
From:

Sent:

To:

Subject:

Hello All,
Judy Whitelock <[email protected]>
Thursday, January 05, 2017 7:27 PM
Edgar Abrenica
La Plata circles
Paul and I are absolutely opposed to any further action than has been done except more police monitoring.

Sincerely,
Judy and Paul Whitelock
Sent from my Verizon 4G LTE Droid
40 Edgar Abrenica
From:

Sent:

To:

Subjed:

Donald Thomas <[email protected]>
Thursday, January 05, 2017 3:56 PM
Edgar Abrenica
1/3 ltr about trafic circles
Edgar, GREAT idea! We are in favor of the traffic circles as proposed in your letter.

Donald Thomas, 29651 Via Pan, Laguna Niguel , CA 92677
41 Edgar Abrenica
From:

Sent:

To:

Subject:

Jeffrey Johnson <[email protected]>
Thursday, January 05, 2017 3:55 PM
Edgar Abrenica; Jeffrey Johnson
Slower Traffic
Thank you so much for spending time with me on the phone re: traffic speeds. Here's a brief synopsis of the poinls we discussed:

1. Traffic circles will necessitate 2-3 residents getting red curbs for at least three of the proposed 4 circle .

2. Trucks and even most cars will not be able to make the counter-clockwise move, even if just a garbage can is used for the circle.

3. Possibility of bike lanes to narrow perception of width of street.

4. Possibility of marked parking spaces to narrow perception of street width.

5. Non-periodic places of traffic cones, along with different locations of traffic cones.

I just thought of:

5. Use of zig zag lines at several locations (with SLOW) printed into them.

6. Use of a funnel shape in white lines to make street look narrower in different places.

As we discussed, humans get adjusted very quickly to the street and will at first slow down, but then will return to faster speeds once they know the hazards involved.

I commuted from LA to LN once a week for 25 years, and after a while I could navigate a portion of the south bound 405 where carpool lane is very narrow and very curvy at full speed. I know who was using that portion for the first time as they rea11y slowed down.

Thanks again,
Jeffrey Johnson 25071 Via Portola 949-495-4981
42 Edgar Abrenica
From:

Sent:

To:

Subject:

Mr. Abrenica
Doug Shaffer <[email protected]>
Thursday, January OS, 2017 2:53 PM
Edgar Abrenica
Traffic Circles
I am responding to your letter received today regarding traffic circles on La Plata.

I am vehemently opposed to this suggestion. The speeds as listed on this letter of information do not require this kind of action. The traffic circles that I have experienced are MUCH more dangerous than the issue you are trying to address.

Doug Shaffer
25225 Via Piedra Blanca
Laguna Niguel 92677
43 Edgar Abrenica
From:

Sent:

To:

Subject:

Dear Mr. Abrenica
David Bailey <[email protected]>
Thursday, January 05, 2017 2:06 PM
Edgar Abrenica
Traffic Circles
I just received the letter from the city regarding traffic circles. I am highly opposed to putting unnecessary, unsightly traffic circles into our neighborhood.

We live in the middle of La Vida (24821 La Vida) and as you can see from your chart, there are occasional speeders on our street. But I think the big point being mis ed here is that most cars are traveling at a reasonable rate of speed.

Please do not let a few complainers destroy our roads with obtrusive traffic circles! Please do not waste the city's money and residents' time on this project. The complaining residents were well aware of the tra-ffic on their streets when they purchased lheir homes. If they were concerned about their children playing amidst traffic, they should have purchased a home on a quieter street.

When we moved into our La Vida home 20 years ago, our children were 3 years and 6 months old. They grew up playing outside all of those years. Traffic was not a major issue on our street.

Thank you for you time,
David and Susan Bailey
44 Edgar Abrenica
From:

Sent:

To:

Cc:

Subject:

Importance:

Dear Edgar:

Gene < [email protected]>
Wednesday, December 21, 2016 12:43 PM
Edgar Abrenica
Gary Capata; Ziad Mazboudi; Laurie Davies; Fred Minagar; Elaine Gennawey; Jerry Slusiewicz; Nasser Abbaszadeh; John Mark Jennings; Rod Foster; Frank Borges; Catalina Ramirez
Your Letter of Dec. 8, 2016
High
Thank you for your letter regarding speeding on La Plata Drive. I hope those residents included in distribution take heed of your concerns. However, even if they do, there are many more drivers who live outside the neighborhood who use the street and several of those will continue to speed.

The proposal put forth at the Nov. 30 Traffic Commission to install traffic circles on La Plata will hopefully mitigate some of the speeding. However, as you probably noticed at that meeting, the non-La Plata residents are more concerned with keeping traffic off their streets than making our street safer. Therefore, if the traffic circles are put to a vote, the non-La Plata residents will likely vote it down. The traffic circles must be installed in the interest of traffic safety without a vote! Sincerely,
Eugene G. Price
24892 La Plata Dr
Laguna Niguel, CA 92677
949-495-7579
45 CALL TO ORDER

CITY OF LAGUNA NIGUEL

TRAFFIC COMMISSION

MINUTES OF
JANUARY 25, 2017
The meeting was called to order at 7:03 p.m. by Commissioner Pouraryan.

Pledge of Allegiance
The Pledge of Allegiance was led by Commissioner Sherry.

Roll Call
Commission Members Present:

Commissioner Mike Pouraryan
Commissioner Stephanie Winstead
Commissioner Aniko Sherry
Commission Members Absent:

Commissioner Joe Williams
City Council Liaison Present:

Mayor Pro Tern Fred Minagar
Councilmember Laurie Davies
City Staff Present:

Nasser Abbaszadeh Director of Public Works/Cjty Engineer Ziad Mazboudi, Senior Civil Engineer
Sgt. Jack Songer, Police ervices
Rita Moon, Recording Secretary
Oath of Office
Commissioner Stephanie was given the Oath of Office.

Election of hair and Vice Chair
A MOTION was made by Commissioner Pouraryan, seconded by Commissioner Sherry to nominate Commissioner Winstead for Chair and Commissioner Sherry for Vice Chair.

Motion Carried 3 - 0.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page2
A. .:::C~O~=..;..:_-==;!!..!.:~-=
B.

Item A.2 was pulled for discussion.

A.2 Traffi Calming Toolkit
Commissioner Pouraryan thanked Councilmember Davies for her attendance at the ACC-OC event on parking.

Chair Winstead thanked staff for including costs associated with various traffic calming methods. She would like to see costs for police ervices included. She also mentioned that the section on speed bumps was missing.

Staff will include police costs and the section on speed bumps in the Toolkit.

A.1
A MOTION was made by Commissioner Pouraryan, seconded by Commissioner Sherry, to approve the Consent Calendar.

Motion Carried 3 - 0.

Victoria Hughes spoke on the accidents that have occurred on Paseo de Colinas & Golden Lantern. Ms. Hughes shared pictures with the Co.mmi sion of retaining walls that had been damaged. She would like a guard rail installed or other measures to slow traffic.

None
D. DISCUSSION ITEMS
D.1 r the La Plata Drive Nei11hborhood
A PowerPoint presentation was provided by staff regarding the La Plata Drive neighborhood.

Vice Chair Sherry asked for the ratio of responses regarding traffic circles. Staff stated that they were 3 to 1 opposed to the circles.

Commissioner Pouraryan asked Sgt. Songer about enforcement. Sgt. anger stated that officers have been patrol ling the area. At Crown Valley Parkway and La Plata Drive they issued 243 tickets (5 per week) in 2016 and they will continue enforcement.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page3
Staff stated that 332 letters were sent on two (2) occasions. A resident asked about installing a mirror but Staff stated that sight distance is not an issue.

Commissioner Pouraryan also asked about street nan-owing. Staff stated that it is only a temporary fix. Staff further stated that after the waiting period of one (1) year, road bumps could be brought back before the Commission.

Chair Winstead stated that the road bump issue could be brought back before the year was up and include additional streets to receive road bumps.

OPEN PUBLIC COMMENTS
Marlyn Evans was oppo ed to traffic circles. She worried about emergency vehicles and motorhomes maneuvering the circles.

Anders Lasater did not want speeders to be moved over to La Vida Drive. Tbe City should have a complete solution for the entire neighborhood, not just La Plata Drive.

Robyn Francey was aware of speeding but felt four (4) circles seemed to be too many.

Since La Plata is a straight through street, she felt a stop sign would work better or just one (1) circle.

Gene Price a 40-year resident ha seen things get worse. He thanked staff for the letters that were sent to the neighborhood. Speaking for Daemon Clark and himself, they were in favor of whatever works, but something needs to be done. There are at least five (5) families with children living on La Plata Drive.

Diana Stratford stated that no one wants speed bumps but kids are kept inside because of speeds. She would like a stop sign installed.

PUBLIC COMMENTS CLOSED
Vice Chair Sherry drove the neighborhood and witnessed cars speeding on La Plata Drive.

Commissioner Pouraryan asked about stop sign installation. Staff stated stop signs are not used to control speeds, they are right-of-way controls.

Chair Winstead drove the neighborhood and talked to residents. The residents on La Plata Drive favored speed bumps. Chair Winstead stated that it is a neighborhood problem and would like road bump installation considered throughout the neighborhood.

Mayor Pro Tern Minagar asked staff if wanants were completed for stop signs and if a consultant had been in olved. Staff stated no consultant was used and accidents were low therefore warrants would not be met.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page4
Mayor Pro Tern Minagar stated that because of slopes, sight distance, etc., cir Jes might not be the solution and suggested a warrant assessment. Staff will identify and analyze the accidents that occurred on La Plata Drive.

Councilmember Davies agreed that speed bumps should be looked at as a neighborhood solution and safety comes before convenience, but needs to be consistent. She also agreed stop signs are not for speed control but feels something needs to be done to keep the neighborhood safe.

A MOTION was made by Commissioner Pouraryan and econded by Vice Chair Sherry, to direct staff to revisit speed bump installation and bring it back to the Commission in March.

Motion Carried 3 - 0.

D.2 jtywide Re id mial Permit Parking Program - Draft
Ms. Trissa Allen from Linscott Law & Greenspan Engineers provided a PowerPoint presentation on the proposed residential permit parking program.

Commissioner Pouraryan asked why six (6) months was allowed for the current eleven (11) districts. Staff stated that six (6) months would be ne,~ded to start them on the new program. He then asked the consultant if the stated due diligence for residents was to observe the number of vehicles parking and the number of available parking spaces. Ms.

Allen stated that this was correct and 14 days were needed to count vehicles parked between 1 a.m. - 3 a.m. Corn.missioner Pouraryan asked about the $1 500 initiation fee, she stated tvvo (2) cities charge to defer staff costs. He then asked why Laguna Beach was not compared; she stated that it was a coastal city.

Staff stated the staff time and night surveys cost approximately $10,000 per district.

Vice Chair Sherry stated that eight (8) years ago ber commwtity monitored the parking during all hours. They had a security camera, took photos and checked neighboring areas to see if parking was available. After their due diligence, staff verified their data and agreed that there was an issue. H r Master HOA was not interested in the parking permit issue and would not have paid the $1 ,500 fee; and the residents wouJd have had to pay the fee.

Commissioner Pouraryan asked the consultant about the hot spots. The Consultant stated that they were based on the areas of single-family zones near multi-family zones.

Chair Winstead asked if the parking program will affect the entire city. Staff stated that it was on an as needed basis.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017

OPEN PUBLIC COMMENTS
Pages
Dan Gara, board member of Summerset HOA stated that for 18 months they had been trying to resolve their parking issue. They were prepared to present their due diligence in August before the moratorium, and want to move forward.

Elisa Berardi is concerned that visitors will not be able to park on her street if she is limited to two (2) permits.

Staff stated that guests would have to park in her driveway.

Rick Miller stated that Table 2 regarding the number of permits issued was incorrect. He lives in the Seagate neighborhood that ha had permit parking about four (4) months and felt it was working great. Mr. Miller did not see the need for any changes to the current program.

Gary Priegel thanked Council and staff for their work on this issue. His permit parking program is working well. He stated that on Hidden Hills Drive cars are driving on the wrong side of the street.

When asked if the Summerset neighborhood would have to start over, staff stated their fee would be waived along with the Sterling Niguel neighborhood.

Matthew Buck was representing the California Apartment Association. They have approximately 3,000 units in Laguna Niguel. Thanked Staff for jncluding them in the process.

Mary Cahillane from the Sterling Niguel neighborhood wanted to verify the $1,500 fee would be waived. Staff stated that it would be waived.

Thom Lopes from the Seagate neighborhood liked the RPPP but is not happy with the 2 a.m. - 6 a.m. hours.

Gary Reinert felt the RPPP should be citywide and encouraged a citywide ban on parking during the hours of 2 a.m. - 6 a.rn. He stated that most of the on-street parking comes from neighbors not using their garages.

Scott Skinner stated that Laguna Crest permit parking program is working very well. He further stated that four ( 4) apartment complexes affect his neighborhood and he does not want the hours to be changed. Mr. Skinner would like to know the number of tickets issued in the eleven (11) parking permit districts. He did not like "pay to play".

Rita Hom asked if their current permit parking area (Rancho Niguel) would be affected.

Staff stated that it would be included in the new pe1mit parking program. Ms. Horn did not think cities with over 1 OOk residents should ha e been compared to Laguna Niguel with only 65k residents.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page6
Kyle Roybal Legal Counsel for Rancho TigueJ Sub Association #4 would like time increased to IO p.m. - 6 a.m. Costa Brava Apartments have 175 spots and only pass out 60 pe1mits. He felt the RPPP is a last resort and the $1 500 fee should be eliminated.

CLOSE PUBLIC COMMENTS
Commissioner Pouraryan asked staff to examine extending the hours and the fee. He asked Matthew Buck to comment on the Windridge Apartments onsite parking. In July they spoke wi h the apartments and wanted to know ifthey had looked for additional onsite parking. Mr. Buck did not know but he offered to work with the City.

Councilmember Davies stated that the permit parking program should be fair and consistent. She felt existing districts have six (6) months to convert to the new program and that should be enough time. She further stated that some single-family units are using their garages for storage and indicated parked cars in garages would cut down on crime.

Councilmeniber Davies stated that our police services should not to be used for parking enforcement and perhaps a private company should be considered and that permit parking staff costs should be recovered.

Chair Winstead asked Mr. Buck if the aparlments were going to be good neighbors. To date the apartment managers were not cooperating and Windridge Apartments is 250 spaces short. I\1r. Buck stated that be is willing to work with the City.

Commissioner Pouraryan asked if there was an appeal process. Staff stated that it is covered in the program. He then asked for clarification of the checklist on Pg. 18, item D.

Ms. A!Jen stated that the checklist was mainly for multi-family units.

Chair Winstead asked if there was room to address overnight guests and single-family units with five (5) drivers. he would like to see a provision for additional permit .

Staff stated that there are cities that have no overnight parking and issue no permits.

Vice-Chair _Sherry stated that on her street a family of six (6) parks all of their cars on the street.

Councilmember Davies stated that they need to e aluate the number of paces and no exceptions should be made. Consistency is needed and adjustments have to be made.

Chair Winstead asked if the number of citations could be gathered for the cun-ent permit parking areas. Sgt. Songer stated that on Sanoria Street & Sandling Court they had given 16 tickets. He informed the Commission that one (1) more parking officer had been added and we now have four (4) officers.

Commissioner Pourruyan asked if PACT wrote tickets. Sgt. Songer stated that they only write handicap parking violations.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page 7
Mayor Pro Tern Minagar stated that the City Council wanted the consultant to complete the RPPP and he was in agreement with the findings/recommendations. He added that the Traffic Commission will make a recommendation and it will be brought to City Council for approval.

A MOTION was made by Commissioner Pouraryan and seconded by Vice Chair Sherry, to direct staff to take all the comments received under advisement and bring this item back to the Traffic Commission for a final recommendation.

Motion Carried 3 - 0.

Commissioner Pouraryan stated Mr. Lopes would be sending in additional comments for the record.

E. CITY COUNCIL COMMENTS
Councilmember Davies - Stated that all five (5) Commissioners would be present for the final RPPP vote. When she asked about the handing out permits, staff stated that multi-family permit parking would not be likely. Councilmember Davies stated they should have the opportunity to apply.

Councilmember Davies asked staff to sit down with the two (2) absent members to go over what was discussed at the January meeting. She thanked the Commissioners for their input.

Mayor Pro Tern Minagar was pleased with the way the City undertook the Parking Permit Program and v.rith the findings.

F. DEVELOPMENT UPDATES
H.

Staff stated that there was a lot of storm damage and construction activities on Crown Valley Parkway between MouJton Parkway and Niguel Road.

Night work on Crown Valley Parkway from Forbes Road north to south wiU be ongoing by Alliance from mid-February through March. Staff will provide further update as a more specific schedule is provided.

Sgt. Songer thanked the City Council for approving the additional officers.

He also informed the Commission that we have had two (2) fatalities in the past week.

Commissioner Pouraryan - Stated that with the two (2) recent fatalities, the City should continue the safety outreach.

TRAFFIC COMMISSION MINUTES -JANUARY 25, 2017 Page 8
He then reminded the Commissioners about Coffee with a Cop on February 15th.

Vice Chair Sherry - None
Chair Winstead - None
Sgt. Songer informed the Commission about the Triathlon on Saturday. There will be street closures until noon.

Commissioner Pouraryan asked if we were using the City's app regarding closures, etc. and suggested a community outreach regarding the RPPP's due diligence.

I. ADJOURNMENT
Chair Winstead adjourned the meeting at 9:41 p.m. to February 22, 2017.

Traffic Commission Meeting
January 25, 2017
A:s· a tra,ffic calming strategy, the con,c;e~;;p•t
for th'e Traffic Circl.es was init[ally discuss.e'd
a·t t.h··,e,; Tra·ffic Commission Mee,tin·g· .,o·f
N . .-o:v.ember 30, 2016.

Tra·ffiic Circles were prop:osed at f0·u:r
i n·te1rs.e ct ions :

L"a. Plat·a/Vista Plaza Drive,
La Plata/Via Larga,
La Plata/Via Portola, and
Via Portola/Weatherwood/De Anza

0 r-4
V M
M \0
M N
00 M
LI)
0 M
LI)
N
00 LI)
r-4
v
N
Low num·ber of collisions within the neighborhood ofi La Plata 1 Drive and surround,i,ng area since 2012. ,
Three collisions on La Plata, two collisions on Vista Plaza, and one collision on La Estrada nave been re12orted .

Two of the collisions on La Plata involved a failure to yield right of way.

From the total of six collisions in the entire neighborhood only one was related to speed .

The data indicates that while speeding is a concern in the community, collisions related to speeding are low over th.e past few years on La Plata and nearby streets.

Tra·ffic circles are raised circ·ula.r med-i-ans th·'.a1t d.irect traffic counterclockw·ise within· a·n1
intersection. Vehicles must change direct·ion of
travel· to maneuver around the circle.

Traffic circles are typically controlled by "Yie:ld."
si.gnage on all approaches. Traffic circles can
help manage speeds, reduce volumes, and
improve side street access.

C.om·mu·nity in,put is vital to the process.

P·rior to the November meeting, 181 letters
an·1 d several e-mails were sent to the residents
to soricit input.

About 25 residents attended the 11/30/16
Commission meeting.

Irrl1 r-esp·on,d:i"n:g. to the· com·mllun1
ity fe1edtl·c1ck,
t.vxt:o sep·arate letters we,re issued:

Fi•rst letter advised all the residents in th1e
co·mmunity to be mindful of their drivin,.g
s·p·eeds - 332 letters.

Second letter provided details on the
proposal to install traffic circles, and
requested feedback - 332 letters.

As o,t-•· 1.1·.2·s./1.7'
, th·e feedba·ck ind·icaltes:

Ten (10) in sup:port
Six (6) requ.ested additio·nal i'nfo.

Twenty seven (27) op·posed
s.taff recommendation is to receive an·d
file this report, provide enforcement.

T,r·alffic :.Calming for La P,lata N·e·igh,borh:o·o·d
Traffic Commission
January 25, 2017

ATTACHMENT E
Traffic and Transportation Commission Agenda Item -
April 26, 2023
Proposed Improvements on La Plata Drive

ATTACHMENT C
Traffic and Transportation Commission Agenda Item -
April 23, 2025
April 26, 2023 Commission Meeting Minutes

MINUTES OF THE REGULAR MEETING OF

THE CITY OF LAGUNA NIGUEL

TRAFFIC AND TRANSPORTATION COMMISSION
April 26, 2023 - 7:00 p.m.

CALL TO ORDER - Chair Betonte called the Regular Traffic and Transportation Commission Meeting to order at 7:00 p.m.

ROLL CALL
Commission Members:

Council Liaisons:

City Staff Present:

Chair Amy Betonte - Present
Vice Chair Foster "Gene" Johns - Present
Commissioner Robin Cashion - Present
Commissioner Gregory Clements - Present
Commissioner Susan Harden - Present
Council Member Ray Gennawey - Present
Public Works Director Jacki Scott
City Traffic Engineer Kathy Nguyen
Police Chief Isaac Flores
Administrative Sergeant Jason Howell
Deputy Sheriff Aaron Gilbert
Commission Secretary Kaylee Chea
PLEDGE OF ALLEGIANCE - Commissioner Cashion

PUBLIC COMMENTS
There were no public comments.

CONSENT CALENDAR
A MOTION was made by Commissioner Harden, seconded by Vice Chair Johns, to approve the Consent Calendar as presented.

Motion carried 5-0.

1. Minutes of the Regular Traffic and Transportation Commission Meeting on February 22, 2023
Approved as written.

DISCUSSION ITEMS

1. La Plata Drive Traffic Calming Improvements
City Traffic Engineer Nguyen gave a presentation on existing and proposed traffic calming improvements on La Plata Drive.

Discussion ensued between Commissioners and staff.

Traffic & Transportation Commission Regular Minutes Page 1 of 3 April 26, 2023 Commissioner Clements requested increased police enforcement on La Plata Drive.

Vice Chair Johns requested a comprehensive traffic calming study on La Plata Drive and Commissioner Harden inquired what the study would entail.

Commissioner Clements requested that a subcommittee be formed to discuss La Plata Drive traffic calming measures.

City Traffic Engineer Nguyen stated that a comprehensive traffic calming study would include neighborhood workshops, talking to stakeholders in the area, and exploring how the different traffic calming measures affect the streets holistically.

Residents Anders Lasater, Tom Garner, Drew Hall, Ray Goldmann, Taylor Parham, David Piset, Pat Simmsguard, Mark Popoff, Jerry Monson, Alice Cowell, Tanya Yonda, Geoff Middleton, and Rick Costa spoke on traffic calming improvements on La Plata Drive.

Commissioner Clements inquired what improvements could be done in the interim while waiting for the results of the comprehensive traffic calming study.

City Traffic Engineer Nguyen stated that interim measures include police enforcement, speed feedback trailers, striping, and signage.

Chair Betonte inquired if the comprehensive traffic study would take future developments into consideration.

City Traffic Engineer Nguyen stated that the projected traffic generated by the Grace Church development would be considered in the comprehensive traffic study.

A MOTION was made by Commissioner Harden, seconded by Vice Chair Johns, to:

1. Develop a comprehensive traffic calming plan for the affected streets in the Niguel Hills neighborhood; and,

2. Direct staff to provide additional enforcement, speed feedback trailers, and signage in the interim.

Motion carried 5-0.

2. Annual Review of Traffic Controls for Schools
Laura Forinash, Traffic Engineer from Kimley-Horn and Associates, Inc., gave a presentation on the requests from Community Roots Academy and George White Elementary School to modify traffic control.

Discussion ensued between Commissioners and staff.

Commissioner Harden inquired about the use of temporary signage for Community Roots Academy and if it could be enforced.

Traffic & Transportation Commission Regular Minutes Page 2 of 3 April 26, 2023 City Traffic Engineer Nguyen stated that temporary signage may disappear over time and recommended that signs be posted for consistent enforcement.

Commissioner Cashion inquired if a crosswalk could be installed on Via San Sebastian.

City Traffic Engineer Nguyen stated that people are legally allowed to cross anywhere on a residential street like Via San Sebastian and that the proposed signs on Via San Sebastian are intended to prevent midblock U-turns.

Resident Jim Favero spoke on modifying the location of one of the proposed signs prohibiting midblock U-turns.

Commissioner Cashion requested a before and after study of the sign installation and to bring the results back to the Traffic and Transportation Commission.

A MOTION was made by Vice Chair Johns, seconded by Commissioner Clements, to:

1. Approve the installation of signs that prohibit midblock U-turns on Via San Sebastian and Calle Vieja;

2. Approve the removal of No Right Turn on Red sign on Golden Lantern at Chapparosa Park; and,

3. Direct Police Services to continue enforcement efforts in and around the schools.

Motion carried 5-0.

STAFF, CITY COUNCIL, AND COMMISSION COMMENTS
Laura Forinash gave an update on traffic improvements on Shark Bay at Niguel Hills Middle School.

Commissioner Cashion requested an update on the work being done on La Paz Road between Kings Road and Rancho Niguel Road.

Public Works Director Scott stated that the City is studying the cause of the distress in the roadway and potential solutions.

Chair Betonte requested an update on e-bike safety from Police Services.

Deputy Sheriff Gilbert stated that Police Services has been working with Capistrano Unified School District to educate students about e-bike safety.

ADJOURNMENT - Chair Betonte adjourned the meeting at 8:53 p.m. ~ Traffic
~ and Transportation Commission Secretary
Traffic & Transportation Commission Regular Minutes Page 3 of 3 April 26, 2023

ATTACHMENT D
Traffic and Transportation Commission Agenda Item -
April 23, 2025
Niguel Hills Neighborhood Traffic Study
Niguel Hills Neighborhood
Traffic Study
City of Laguna Niguel, California
December 19, 2024
Niguel Hills Neighborhood
Traffic Study
City of Laguna Niguel, California
Prepared for:

City of Laguna Niguel
30111 Crown Valley Parkway
Laguna Niguel, CA 92677
Prepared by:

RK Engineering Group, Inc.
1401 Dove Street, Ste. 540
Newport Beach, CA 92660
Robert Kahn, P.E., T.E.

Bryan Estrada, T.E.

Rogier Goedecke
Matthew Ramon, E.I.T.

Sabrina Ayala
"--\.-\'----+'I.,,..

No. 0555
Exp. 12/31/25
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rkengineer.com 1401 Dove Street I Suite 540 I Newport Beach, CA 92660 I +949.474.0809 RK20400 // 2310-2023-01
Table of Contents
Section Page

1.0 Executive Summary ....................................................................................................... 1-1

1.1 Key Findings: .............. ......................... ..... ....................................... .... ......... ....................... 1-1

2.0 Introduction ................................................................................................................... 2-1

2.1 Purpose and Objectives .............. ... .... .................................................................. ....... ....... 2-1

2.2 Project Background ................................... .. .... ................................................................... 2-2

2.3 Niguel Hills Neighborhood Study Area ............. ............................................................... 2-2

3.0 Traffic Calming Overview .............................................................................................. 3-1

3.1 Examples of Traffic Calming Measures ..... ..... .................................................................. 3-1

3.2 Consequences & Limitations of Traffic Calming ................................... ....................... ... 3-2

3.3 Traffic Calming Policies, Standards, and Guidelines ...................................................... 3-3

4.0 Resident Feedback ........................................................................................................ 4-1

4.1 Town Hall Meetings ............................... .............................. ............................................... 4-1

4.2 Email and Text Communication .............................................................. .......................... 4-2

4.3 Traffic Calming Survey ... .. ................................................................................................... 4-2

5.0 Traffic Data Collection ................................................................................................... 5-1

5.1 Existing Roadway Conditions ............................................................. ............................... 5-1

5.2 Historical Traffic Collision Data .......................................................................................... 5-1

5.3 Speed Surveys .................................................................................................... ....... .......... 5-2

5.4 Average Daily Traffic (ADT) Counts .......... ............................................................. ........ ... 5-3

5.5 Cut-Through Traffic Surveys ......................... ..................................................................... 5-7

5.6 Peak Hour Intersection Turning Movement Counts ........................................................ 5-3

6.0 Intersection Review - Multi-Way Stop Warrants ............................................................ 6-1

6.1 Multi-Way Stop Warrants .. ................................................................................................. 6-1 11'////////m'/////.,W//////////////////////////////////////////////////////////////////////2'/L,W1W/////#//#////////////#//////$#// RI( rkengineer,com
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Table of Contents
Section Page

7.0 Intersection Review-Traffic Signal Warrants ............................................................... 7-1

7.1 Traffic Signal Warrant 1 - Eight Hour Vehicular Volume ................................................. 7-2

7.2 Traffic Signal Warrant 2 - Four-Hour Vehicular Volume .. .. ... ....... ................................ ... 7-3

7.3 Traffic Signal Warrant 3 - Peak Hour Vehicular Volume ................................................. 7-3

7.4 Traffic Signal Warrant 4 - Pedestrian Volume .......................... ........... .. ........................... 7-4

7.5 Traffic Signal Warrant 5 - School Crossing .. .................................. .. .............. ................... 7-4

7.6 Traffic Signal Warrant 6 - Coordinated Signal System .............. ... .................................. 7-4

7.7 Traffic Signal Warrant 7 - Crash Experience .................................................................... 7-4

7.8 Traffic Signal Warrant 8 - Roadway Network ................................................................... 7-5

7.9 Traffic Signal Warrant 9 - Intersection Near a Grade Crossing ................................... .. . 7-5

8.0 Findings and Recommendations ................................................................................... 8-1

8.1 Summary of Findings .......... ........................................................................................... ..... 8-1

8.2 Recommendations ..................................................................... ..... ....................... ............. 8-1

8.2.1 La Plata Drive ................................................................................... ....................... 8-2

8.2.2 Via Portola ... ............................. ............................................................................... 8-2

8.2.3 La Vida Drive ........................ ............................................................. .................... .. 8-3

8.2.4 Via De Anza ............................................................................................................. 8-3

8.2.5 Vista Plaza Drive ........ .......... ..................... ............. ....... .... ........ ........ .... ................... 8-3

8.2.6 Via Larga .................................................................................................................. 8-4

8.2.7 Via Piedra Blanca/Palo Drive ... ......................................................................... ..... 8-4

8.3 Speed Hump Design ............................ ................................. ........... ................................. . 8-4 9 .0 Conclusions and Next Steps .......................................................................................... 9-1

9.1 Conclusions ................................. ................................................... ..................... ................ 9-1 9 .2 Next Steps ......................................................................................................... ................... 9-1 3//////////////////////////,W///////////////////////@u'////////////l//_;W///////.@///.l//////.@/§/////////////#/////.I//.I///.I/////.I// RI( ~~g~~~ING rkengineer.com
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List of Exhibits ID
Niguel Hills Neighborhood Aerial Location Map ........................................................................................ A Study Area Roadway Segments and lntersections ..................................................................................... .. B Resident Feedback Areas of Concern ...................................... .................................................................... C Existing Roadway Conditions ........................................................................................................................ D Traffic Collision Reports ............................................................................................................................... ... E Speed Surveys-Wednesday, April 17, 2024 ............................................................................................ F-1 Speed Surveys - Thursday, April 18, 2024 ................................................................................... ..... ......... F-2 Speed Surveys - Saturday, April 20, 2024 .................................................................................................. F-3 Average Daily Traffic (ADT) - Wednesday, April 17, 2024 ...................................................................... G-1 Average Daily Traffic (ADT) - Thursday, April 18, 2024 ........................................................................... G-2 Average Daily Traffic (ADT) - Saturday, April 20, 2024 .......................................................................... G-3 Cut-Through Survey -AM Peak Period ....................... .............................................................................. H-1 Cut-Through Survey - PM Peak Period ................................................................... ................................... H-2 Conceptual Roadway Improvements - All Segments ............................................. ... ................................... 1 Conceptual Roadway Improvements (Segment 1 & 2) -
La Plata Drive from Crown Valley to Vista Plaza Drive .............................................................................. 1-1 Conceptual Roadway Improvements (Segment 3) -
La Plata Drive from Vista Plaza Drive to Via Larga ..................................................................................... 1-2 Conceptual Roadway Improvements (Segment 4) -
La Plata Drive from Via Larga to Via Pan .. ................................. ................................................................... 1-3 Conceptual Roadway Improvements (Segment 5) -
La Plata Drive from Via Pan to Via Portola ................................................................................................... 1-4 Conceptual Roadway Improvements (Segment 7) -
Via Portola from La Plata Drive to La Vida Drive ......................................................................................... 1-5 Conceptual Roadway Improvements (Segment 8) -
Via Portola from La Vida Drive to Via De Anza/Weatherwood ................................................................. 1-6 Conceptual Roadway Improvements (Segment 9) -
La Vida Drive from Rue De Gaugin to Via Portola ...................................................................................... 1-7 Conceptual Roadway Improvements (Segment 10) -
Via De Anza from Via Portola to Los Osos Drive ........................................................................................ 1-8 Conceptual Roadway Improvements (Segment 11) -
Via De Anza from Los Osos Drive to Palo Drive ......................................................................................... 1-9 ////#////////,01/////////////////////////,@///////////#///////////////////////////,W////////////////////////////////////////////////// RI( rkengineer.com
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List of Exhibits ID
Conceptual Roadway Improvements (Segment 14) -
Vista Plaza Drive from La Plata Drive to Calle Vieja ............................................ ............................... ...... 1-10 Conceptual Roadway Improvements (Segment 15) -
Vista Plaza Drive from Calle Vieja to La Plata Drive ...................... .......................................... ....... .......... 1-11 Conceptual Roadway Improvements (Segment 16) -
Vista Plaza Drive La Plata Drive to Via Piedra Blanca .............................................................................. 1-12 Conceptual Roadway Improvements (Segment 17) -
Via Larga from La Plata Drive to La Plata Drive ......................... .............. , ............................ .................... 1-13 Conceptual Roadway Improvements (Segment 20) -
Via Piedra Blanca from Los Osos Drive to Via De Anza .......................................................................... 1-14 Conceptual Roadway Improvements -
Speed Cushion Detail 30-Foot Wide Street.. ................................ ....... ................... ...... ............................ K-1 Speed Cushion Detail 36/40-Foot Wide Street.. ...................................................................................... K-2 ;,/////////////$////ffe///,0'#//#//////,0'//////////////////////////////,//////////////,/////////,//////////////////////////1W//ff/////// RI< rkenglneer.com
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List of Tables Page
Table 2-1
Table 2-2
Table 4-1
Table 5-1
Table 5-2
Table 5-3
Table 5-4
Table 5-5
Table 6-1
Table 6-2
Table 6-3
Table 6-4
Study Area Roadway Segments .......................................................................................... 2-3 Study Area Intersections ................................................................ ....................................... 2-4 Traffic Calming Survey Responses, By Street.. ................................................................... 4-3 Traffic Collision History (2019-2023) ................................................ ................................... 5-2 Speed Survey Summary- Wednesday, April 17, 2024 ..................................................... 5-4 Speed Survey Summary - Thursday, April 18, 2024 ......................................................... 5-5 Speed Survey Summary - Saturday, April 20, 2024 .......................................................... 5-6 Cut-Through Traffic Observations ....................................................................................... 5-8 CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Vista Plaza Drive .................. 6-2 CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Via Portola ............................ 6-4 CA MUTCD Multi-Way Stop Warrant for Via De Anza/Weatherwood at Via Portola .... 6-6 CA MUTCD Multi-Way Stop Warrant for Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive ....................................................................................................................................... 6-8 Table 7-1 CA MUTCD Traffic Signal Warrants for Golden Lantern at Via De Anza ........................ 7-2 Table 7-2 Golden Lantern at Via De Anza Collision History1 .................................................... ........ 7-5 :Y#/////#//////////////////,1/////,1////////,l////o'/////////,/////////#///#//.,W/////////////./////////1-W/////////#///////////////////// RI< rkenglneer.com
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RK20400 II 2310-2023-01
List of Appendices ID
Resident Feedback & Traffic Calming Survey ................................................................................ .............. A Traffic Conditions Forms ........................................................................ ......................................................... 8 Traffic Collision Records ...................................................................... ............................. .............................. C Speed Survey Count Sheets .......................................................................................................................... D ADT Count Sheets ........................................................................... ...... ........................................................... E Cut-Through Count Sheets ......................................................... ........... ......................................................... F Intersection Turning Movement Count Sheets .................................... ........................................................ G OC Standard Plan 1117 - Intersection Sight Distance ....... .. ..... .................................................................. H CA MUTCD Multi-Way Stop Warrants ........................................ .................................................................... 1 CA MUTCD Traffic Signal Warrants .............................................................. ................................................. J W///////#////#////,¼1//,//////////////////////////////,////////////////////////////////////////////////////////////#/////////////////// RI< rkenglneer.com
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1.0 Executive Summary
This report addresses the ongoing concerns about vehicle speeding and safety from residents of the Niguel Hills neighborhood. The primary goal of this study is to provide data-driven findings and solutions that respond directly to residents' concerns and enhance the overall livability of the neighborhood. Key objectives include addressing existing traffic concerns, collaborating with residents and stakeholders, considering potential consequences and limitations of traffic calming devices, and implementing effective traffic calming solutions based on stakeholder feedback and data.

1.1 Key Findings:
• Speeding: Speed surveys revealed that the 85th percentile speeds on several streets, including La Plata Drive, Via Portola, and Vista Plaza Drive, exceed the posted speed limit of 25 mph by 8 mph or more. Typical residential streets have 85th percentile speeds of 28-32 mph, and several of the streets in the study area surpass this range. • Traffic Collisions: Historical data showed 11 collisions within the study area over the past five years, with a range of factors including unsafe speeds, unsafe starting or backing, auto rightof-way, and driver under the influence being among the most common causes. However, no street segment or intersection experienced five correctable collisions or more within a 12- month period, which is the State's criterion to warrant additional traffic control such as a traffic signal or multi-way stop control.
• Cut-Through Traffic: An origin-destination survey indicated that cut-through traffic is not a significant issue, with most vehicles traveling within the community. • Recommendations: To address these issues, the report recommends implementing a comprehensive traffic calming plan that includes the installation of 14 speed humps, signage, and striping strategically placed throughout the community. These measures aim to reduce vehicle speeds and enhance pedestrian safety.
• Next Steps: The next critical step is to conduct a community-wide vote to approve the installation of speed humps. According to the Laguna Niguel Residential Traffic Management Policy, this measure requires a 67% majority vote to pass. It is imperative that all residents participate in this vote to ensure that the decision reflects the community's collective will. ~/////#//2'///////////////////////&.,w.,W/#/,0'//////////////////////////////////////////////////////#////////////////////,W//////// rkengineer.com
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2.0 Introduction

2.1 Purpose and Objectives
The purpose of this report is to address ongoing concerns about vehicle speeding and safety from residents of the Niguel Hills neighborhood. In response to these concerns, the City of Laguna Niguel has retained RK Engineering Group, Inc. (RK) to conduct a comprehensive evaluation of existing traffic conditions and develop recommendations for effective traffic calming measures throughout the community. This report aims to provide data-driven findings and solutions that directly respond to residents' concerns and enhance the overall livability ofthe neighborhood.

The study follows a systematic approach to identify opportunities for improvement, using traffic data, field observations, and feedback from local stakeholders. The recommendations focus on physical and operational changes designed to reduce vehicle speeds and enhance safety for all roadway users.

This traffic calming review is aligned with the City's policies and guidelines, specifically adhering to the Laguna Niguel Residential Traffic Management Policy and state guidelines. By following these established frameworks, the study ensures that the proposed measures are consistent with best practices and tailored to the unique needs ofthe Niguel Hills community.

Key objectives of the study include:
• Address existing traffic concerns in the Niguel Hills neighborhood. The study provides an extensive review of vehicle speeding and traffic safety concerns reported by residents. The goal is to use data to identify specific locations where traffic calming measures would have the most impact in reducing speeds and improving neighborhood livability. • Collaborate with residents and stakeholders. The study emphasizes active engagement with local residents and City officials (including Laguna Niguel Public Works and the Orange County Sheriff's Department). This collaborative approach ensures that any proposed measures reflect the community's needs and preferences grounded in a transparent, datainformed process. • Consider potential consequences and limitations of traffic calming. The study considers impacts like changes to emergency response times, local access, and traffic diversion to adjacent streets while ensuring all recommendations follow engineering standards and guidelines. Cost considerations are also factored in ensuring solutions are both effective and financially feasible.
• Implement effective traffic calming solutions based on stakeholder feedback and data.

Using data from field reviews, speed surveys, traffic counts, collision history, and input from residents, customized traffic calming strategies have been designed. These solutions aim to enhance safety and livability within the Niguel Hills neighborhood while aligning with the City's traffic management policies.

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2.2 Project Background
The Niguel Hills neighborhood has been the focus of ongoing efforts to address concerns about vehicle speeding for several years. In June 2015, the City Council approved the installation of centerline striping along La Plata Drive from Vista Plaza Drive to Via Portola, which temporarily reduced speeds by an average of 4 mph. However, by March 2016, residents raised additional concerns about high speeds along the same segment. In response, the Traffic and Transportation Commission recommended that the City Council approve a petition for speed humps, but the ballot failed to meet the required 67% support for installation.

In late 2016 and early 2017, the Commission explored traffic circles as a potent ial traffic calming solution, but this idea did not advance due to a lack of community support. The issue resurfaced in December 2021 when a resident requested further traffic calming measures during a Commission meeting. Since then, the City has implemented oversized speed limit signs, speed limit pavement markings, and increased police enforcement, which resulted in a nearly 2 MPH speed reduction .

Speed feedback trailers have also been deployed regularly throughout the neighborhood.

In April 2023, shortly after the approval of the Laguna Niguel Senior Living Center Project at Grace Church, the Traffic and Transportation Commission and City Council directed staff to conduct a comprehensive neighborhood-wide traffic calming study to address the ongoing traffic concerns.

2.3 Niguel Hills Neighborhood Study Area
The Niguel Hills neighborhood is situated in the northeast portion ofthe City of Laguna Niguel and is home to over 480 residences. Unlike many communities in the City, Niguel Hills is not managed by a homeowner's association (HOA), which allows residents to engage directly with the City on neighborhood matters, including traffic and safety concerns.

La Plata Drive serves as the primary access to the community from Crown Valley Parkway and Via De Anza is the primary access from Golden Lantern. The Niguel Hills community is also connected to the neighboring Sommerset Hills and Hidden Hills neighborhoods via Weatherwood, providing additional routes for local traffic flow.

The study area for the Niguel Hills Neighborhood Traffic Study includes twenty (20) study area roadway segments and four (4) study area intersections.

Table 2-1 lists the study area roadway segments.

Table 2-2 lists the study area intersections.

Exhibit A provides an aerial location map showing the boundary of the Niguel Hills Neighborhood and local roadway network.

Exhibit B provides a graphical location map showing the study area roadway segments and intersections.

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Table 2-1 I Study Area Roadway Segments
No. Roadway Segment
1 La Plata Drive Crown Valley Parkway to Via Valverde
2 La Plata Drive Via Valverde to Vista Plaza Drive
3 La Plata Drive Vista Plaza Drive to Via Larga
4 La Plata Drive Via Larga to Via Pan
5 La Plata Drive Via Pan to Via Portola
6 La Plata Drive Via Portola to Vista Plaza Drive
7 Via Portola La Plata Drive to La Vida Drive
8 Via Portola La Vida Drive to Via De Anzai Weatherwood 9 La Vida Drive Via Valverde to Via Portola
10 Via De Anza Via Portola to Los Osos Drive
11 Via De Anza Los Osos Drive to Golden Lantern
12 Via San Sebastian Calle Vieja to Terminus
13 Calle Vieja Via San Sebastian to Vista Plaza Drive
14 Vista Plaza Drive La Plata Drive to Calle Vieja
15 Vista Plaza Drive Calle Vieja to La Plata Drive
16 Vista Plaza Drive
La Plata Drive to
Via Piedra Blanca/ La Estrada Drive
17 Via Larga La Plata Drive to La Plata Drive
18 La Estrada Drive Vista Plaza Drive to Los Osos Drive 19 Via Piedra Blanca Vista Plaza Drive to Los Osos Drive 20 Via Piedra Blanca Los Osos Drive to Palo Drive
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Table 2-2 I Study Area Intersections
No. Intersections
1 La Plata Drive at Vista Plaza Drive
2 La Plata Drive at Via Portola
3 Via De Anza at Via Portola/ Weatherwood
4 Via De Anza at Golden Lantern
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Legend
••• • Study Arca Boundary
Exhibit A
Location Map
•
1 NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY II CITY OF LAGUNA NIGUEL I Uls.mJIDl
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• S1udy Alea Boundary
{D • Sludy A.tea Roadway S&9m1tnl
(!] •SludyArealntersections
"' • Traffic Signals Exhibit B
Study Area

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3.0 Traffic Calming Overview
Traffic calming refers to the management of vehicular and pedestrian traffic within a neighborhood to minimize negative impacts on residents and improve safety for all road users. It aims to create a more livable environment by addressing concerns like speeding, cut-through traffic, and safety for pedestrians and cyclists. Traffic calming measures are designed to slow down vehicles, reduce collision frequency and severity, and decrease the reliance on police enforcement for speed control.

These efforts help to create a harmonious environment where the needs of drivers, pedestrians, and cyclists are balanced, ultimately improving the quality of life for residents.

3.1 Examples of Traffic Calming Measures
Common traffic calming measures include:

Speed Humps
Roadway Striping
• Effectively slow down vehicles, especially in residential areas and near schools or playgrounds.
• Slower speeds allow drivers more time to react to pedestrians crossing the road.
• Can reduce the number of traffic collisions, particularly those involving excessive speed.
• Serve as a visual and physical reminder to drivers that they are entering a slower-speed area. Encourages drivers to be more attentive and cautious.
• Cannot be installed on roadways exceeding an eight percent (8%) grade.
• Must be spaced at least 250 feet apart and must be out of the influence area of driveways.
• Have shown to reduce vehicle speeds up to 5 mph in
residential communities.
• Narrower lanes give drivers the perception of a more
constrained space, encouraging them to slow down. Drivers tend to drive more cautiously when they feel there is less room for error.
• Visually reduces the width of the driving lane, making it appear more restricted. This prompts drivers to reduce their speed to maintain control and avoid drifting into other lanes or onto the shoulder.
• May also improve sight distance by channeling vehicles towards the center of the road and away from the side of the road.

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Roadway Signs
SPEED
LIMIT
25 Raised Medians
3-2
• Signs help drivers anticipate what to expect on the road, making it easier to understand and follow traffic rules. • When signs are standardized in design, placement, and messaging, drivers can quickly recognize and comprehend the information.
• Consistent and visible signage throughout the community makes drivers more accountable for adhering to the posted regulations.
• Physically narrow the travel lanes, encouraging drivers to reduce their speed.
• The narrowed roadway and reduced speeds can improve
pedestrian safety.

3.2 Consequences & Limitations of Traffic Calming
While traffic calming offers many benefits, there are important consequences and limitations to consider. Measures such as speed humps and road narrowing can increase emergency response times, as fire trucks and ambulances may be delayed . Travel times for residents might also increase, and there is a risk that traffic calming measures could redirect traffic to adjacent streets, shifting rather than resolving the issue. Physical features like speed humps can also generate noise and may affect the visual appeal of the neighborhood. Costs associated with implementing and maintaining traffic calming devices can be significant, requiring careful planning and budgeting. Additionally, traffic calming cannot m itigate against reckless or bad driving behavior. 'l"///,//////,////,W/////////,////,///////////////////////#/////////#/////////,W//,//////////1//,///,/////////////////////////////I/////////# RI( rkengineer.com
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3.3 Traffic Calming Policies, Standards, and Guidelines Adherence to established policies, standards, and guidelines is essential for implementing traffic calming measures effectively and in compliance with regulations. This ensures that all interventions are safe, appropriate, and aligned with community goals. The following key references have been considered in developing the recommendations of this study. • City of Laguna Niguel Policies: The City has adopted the following policies related to traffic calming:
o City of Laguna Niguel Residential Traffic Management Policy, adopted 7/13/1993, latest revision 11 /1 /05.
• California Manual on Uniform Traffic Control Devices (CA MUTCD): Establishes standards for roadway signage, striping, and traffic control devices on California's streets and highways.

It includes warrant criteria for any new traffic control devices to ensure they meetthe necessary requirements before installation.
• California Vehicle Code: Governs the legal requirements for vehicle operations and roadway use.
• Orange County Fire Authority: Ensures that traffic calming measures do not hinder emergency vehicle access and response times.
• Institute of Transportation Engineers (ITE) Guidelines: Provides nationally recognized best practices and guidance for implementing effective traffic calming measures.

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4.0 Resident Feedback
Resident feedback played a critical role In understanding community concerns and shaping the study's recommendations. Feedback was gathered through multiple channels, including three town hall meetings, email submissions, text messages, and a comprehensive survey. Each method provided valuable insights into local traffic issues and resident preferences. The following website was set up to keep residents informed about the process and provide critical information. https://cityoflagu naniguel .org/ 16 73/N ig uel-Hi lls-T raffic-Study A total of 185 comments were received from residents during the public outreach process, identifying multiple areas of concern throughout the community.

Exhibit C graphically shows the resident feedback areas of concern locations.

Appendix A includes a copy of the resident feedback log and areas of concern.

4.1 Town Hall Meetings
A series of town hall meetings were held at Grace Church, 24600 La Plata Drive, to engage the community and gather valuable feedback.
,- Town Hall #1: February 8, 2024
The first town hall meeting introduced the project to the community, outlining its goals and the scope of the study. Residents were invited to share their concerns about traffic conditions, and the main issues raised were such things as speeding, sight distance, cut-through traffic, and pedestrian safety. The meeting provided an open forum for dialogue, helping to identify key problem areas for further investigation. The first town hall meeting had 33 people sign in for attendance.
, Town Hall #2: September 26, 2024
The second town hall presented the results of the data collection process, including speed survey findings, traffic counts, and collision data. Attendees were encouraged to review the data and provide additional feedback. This meeting aimed to ensure transparency and incorporate resident perspectives into the ongoing analysis. The second town hall meeting had 45 people sign in for attendance.
► Town Hall #3: November 14, 2024
The third and final town hall shared the findings of the study and presented recommendations for traffic calming measures. Residents were asked to provide input on their preferences for implementing the proposed solutions. The discussion focused on balancing effectiveness with community needs and gathering consensus on the next steps. The third town hall meeting had 44 people sign in for attendance.

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4.2 Email and Text Communication
Residents were encouraged to share their feedback through email and text messages. These communication methods allowed residents to voice concerns and suggestions conveniently and ensured that a wide range of perspectives was considered in the study.

4.3 Traffic Calming Survey
A survey was distributed to gather community opinions on potential traffic calming features for the community.

The survey asked residents which of the following five (5) traffic calming devices would you like to see in the community.

1. Speed Humps

2. Roadway Striping (e.g. lane narrowing, centerline striping, edge line striping, etc.)

3. Roadway Signs (e.g. speed limit signs, warning signs)

4. Raised Medians

5. Prohibit Left Turns into and out of neighborhood at Golden LanternNia De Anza Table 4-1 and Figure 4-1 show the results of the survey.

Appendix A includes a copy of the Traffic Calming Survey form. ½1//////////////////////////////////////////////////////,W#/////////////,,W/////////////////,W/////////////#/$////////////,///////// RI( rkengineer.com
&NGINliliRING
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N
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Concerns:
• •Spudlng
• Colllslons
•Cut-Through
• .. TrafflcCono-ol
' '
• • High Traffic Volumas
• Sight Dlstencv
• •Bicycles
• •PadHtrlans
......
• • School Plck-Up/Drop•Off
............ --- -- ----
Note: Areas of concern dots may include more than one response.

Legend:
••• • Study Area Boundary
"•Tr11ffic:Sign11I
1-7·~0
c.,,o
(
/ .,,.- --Sdiool Pid: U
I _ .. _d~"- '- ~~'--:
~ -.h Trafflc Vo!vffiM
Based on 18S Responns
llS of09/2024
33% Spoodiog
ExhibitC
Resident Feedback Areas of Concern
N1GUEL rl lLLS NEIGHBORHOOD TRAFFIC CALMING STUDY II CllY OF LAGUNA NIGUEL RK20400 // 2310-2023-01 4-3
Table 4-1 I Traffic Calming Survey Responses, By Street Prohibit Left Turns@
Speed Humps Roadway Striping Roadway Signs Raised Medians Golden Lantern & Via Street De Anza
Yes No Yes No Yes No Yes No Yes No
Calle Vieja 1 0 1 0 1 0 0 1 0 1
La Estrada Drive 5 14 9 8 13 4 2 16 7 13
Los Osos Drive 1 3 1 2 2 2 0 3 2 2
La Plata Drive 16 4 7 12 14 4 10 9 9 9
La Vida Drive 8 5 10 2 11 1 5 6 4 7
Palo Drive 3 1 3 0 4 0 0 3 2 2
Via Baja Cerro 5 2 3 3 4 2 2 4 5 3
Via Cebolla 1 0 0 1 0 1 0 1 0 0
Via De Anza 20 6 5 20 10 14 5 19 9 14
Via Larga 4 9 7 6 8 5 5 8 7 6
Via Pan 1 1 0 2 0 2 1 1 1 1
Via Piedra Blanca 9 9 9 8 14 3 6 11 4 14
Via Piedra Roja 0 2 2 0 2 0 1 1 0 2
Via Portola 5 1 2 3 4 1 3 3 3 2
Via San Sebastian 2 8 4 6 5 5 3 7 3 7
Via Valverde 4 1 3 2 5 0 2 3 2 3
Vista Plaza Drive 8 13 11 9 14 3 7 13 8 12
Yes/No Total 93 79 77 84 111 47 52 109 66 98
Yes/No% 54% 46% 48% 52% 70% 30% 32% 68% 40% 60%
Total Responses 172 161 158 161 164
rkcngincer.com
w-, IW ' RI I( I ENGINEERING ,. ' GROUP INC.

RK20400 // 2310-2023-01 4-4
Figure 4-2 I Traffic Calming Survey Responses, By Feature Speed Humps Roadway Striping Roadway Signs
Community-Wide Community-Wide Community-Wide
100'! , .... """' """ ""' "'"' - - - ms "'" , .. ,,,.
'°" Im ..,. _ rm_ m ""'
""' -= - ""'
- ... - - ... """ 2011
- ,..
"'" ""• -- ,.,.
'"' ... ... YES TOUII Volu; t 72 NO YES Total VolU: 161 NO YES Total Votn; 1sa NO Raised Medians Prohibit Left Turns GL @VDA
Community-Wide Community-Wide
100'!
... """' - -
""' -, .. ... .... so,, '°" mt - ... -
""' ,..
- ""' .... "" ... YES Total Votea: 161 NO YES Tatal Votes: 164 NO ' I R ~I( ENGINEERING "- GROUP INC
RK20400 // 2310-2023-01 5-1

5.0 Traffic Data Collection
A comprehensive data collection process was conducted to assess traffic conditions within the study area. This process involves gathering quantitative data to understand existing roadway conditions and traffic patterns. The collected data helps establish a clear understanding of current conditions and identify key areas for improvement. The following data was collected to help establish existing conditions.
• Field reviews
• Historical traffic collision data
• Speed surveys
• Average daily traffic (ADT) counts
• Cut-through traffic counts
• Intersection level of service (LOS) analysis
• All-way stop and traffic signal warrants
• Sight distance review

5.1 Existing Roadway Conditions
RK performed thorough field reviews of the study area and has documented the existing roadway conditions, including lane geometry, roadway widths, signing and striping, intersection controls, posted speed limits, and parking restrictions.

Exhibit D provides a summary ofthe existing roadway conditions.

Appendix B includes the Traffic Conditions Forms for the roadways analyzed within the study area.

5.2 Historical Traffic Collision Data
Traffic collision data within the study area has been obtained from the Transportation Injury Mapping System (TIMS). TIMS has been developed by the University of California, Berkeley Safe Transportation Research and Education Center (SafeTREC) to map and access the California Statewide Integrated Traffic Records System (SWITRS). RK has reviewed traffic collision data for the past five (5) years within the study area. Over this time, a total of eleven (11) collisions have been reported within the study area. 1
Exhibit E provides a map showing the location ofthe collisions. 1 A collision resulting in a fatality occurred at the intersection of Golden Lantern and Via De Anza in May 2024.

However, at the time of writing this study, the collision report was not yet made public. Therefore, it has not been included in this analysis.
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Legend:
--- ... Study Area Boundary
• •SlopSign(R1-1)
■ • Stop Sign Ahead Sign (W3-1) & Pavement Markings
• • 25 MPH Spud lim it Sign & Pavemenl Markings
■ • Stridly En lo reed Radar Sign
X • lSMPHTurningRtghtAheadSign
• • No Parking Anyirme Sign (R26)
• • NoP•i\;irtg N:Ofhl• Nmf\'5lh
X - ...io5ta-P9""'1) Myf1tM Signtll26{S"
■ • L<!ft-Turn Ahead Sign (Wl-1 J
1!1 - School Sign (R3-4)
• No U-Turn Sign (R3-4)
■ • NoOutletS1gn(W14-2)
■ • SLOW. Ch~dren at Play Sign
- • No Cente,line Striping
- • Ca llrans Detail 22 Centftdine Striping
- • Caltrans Dela ii 29 Cenlerline Striping
0 •TraHic:5,i;rttl
@ •AJJ W1y ~i::i9
Adelanto Oriw
64' West La Vida Drive 36'
East La Vida Drlve 30'
36' 40'
Via Valvarde at La Palta Drive 40' 40'
ViaValverdeatCall, VitJI 36' 36'
Call, Vieja North of Via Valverde 34' V111P1 t draBl1nc11 36' C1ll,Viej1SouLholVi1Valverde 36' 36'
40' La E51r11d11Drive 36'
v .. u rga 36' 36'
36' 36'
36' 36'
Exhibit D
Existing Roadway Conditions
, ... ,-~ "'\ NIGUEL HILLS Nl:IOHBORHOODTRAFFIC CALMING STUDY II CITY OF LAGUNA NIGUEL \ Zl10-202J..OI
/////////////// } ~~8J~TicRINO////#IH///7#//#/..WIIM¥/l/#I/HI/I/.W//ll////////ll/lllll/lll/.wl'////,W//I.Q//Q//#/P//& .X/,(7////U//#//////l'l/ll/#/l#'/IIH#IH#IQ,.Y/Q//ll'/l/////////////h'/l#//#/#l//.ll'(/.l/ll/ll/l,I.Q7#.ll////,I///II/.QIM'/IH//I/IUI///IIU//IH@h/dllHIMWllld#UIII..WB'#Hl#//IU#lt'.ll#Q/I.Q#I///.U,,W/ ' ' ' ' ' ' Collision Factor: ,
• =UnsafeSpeod ....._ ......_ -- - _ _ _ .- --
• = Unsafe Starting or Backing
"'Driver Under the Influence
• = Traffic Signals and Signs
• = Improper Turning
= Automobile Right-cf-Way
• = Pedestrian Violation
Source: Laguna Niguel Police Department, Statewide Integrated Traffic Records System, & Transportation Injury Mapping System
Adelanto Driv•
Legend:
•-- - Study Area Boundary
0 • TraffiC.5-slNI
18% DrivarUnd■rth11 Influence
Baud on 11 Reported Accidents
Over 111 5-Year Period Exhibit E
Traffic Collision Reports

NIGUEL HILLS NEIGHBORHOODTRAFFICCALMING STUDY II CITY OF LAGUNA NIGUEL , I :21,.t=.HlJ
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Table 5-1 summarizes the results of the Traffic Collision Data.

Appendix C includes a copy ofthe traffic collision records for the past five (5) years.

Table 5-1 I Traffic Collision History (2019-2023)
Unsafe Driver Traffic Auto
Year Total Unsafe Starting Under Signals & Improper Ped Right of Collisions Speed or Influence Signs Turn Violation Way Backing 2019 1 - 1 - - - -- --
2020 4 1 1 2 - - -- -
2021 1 -- -- - 1 -- -- --
2022 2 1 -- - - 1 - --
2023 3 - - -- - - 1 2
20242 - - -- - - - -- -
Total 11 2 2 2 1 1 1 2
% 100% 18% 18% 18% 9% 9% 9% 18%
1 Traffic collision data obtained from the Transportation Injury Mapping System (TIMS) for the most recent fiveyear period within the Niguel Hills Neighborhood. 2 Zero reported collisions have been released for year 2024 at the time of publishing this report.

5.3 Speed Surveys
RK utilized a third-party traffic count company, Aim TD, LLC., to perform 24-hour speed surveys along twenty (20) roadway segments within the study area. Speed suNeys took place during typical weekday and weekend conditions while local schools were in session and during clear weather conditions.

Speed surveys were conducted for a full 24 hours using pneumatic tubes on each of the following days:
• Wednesday, April 17, 2024
• Thursday, April 18, 2024
• Saturday, April 20, 2024
Key statistical data obtained from the speed surveys include the 85th percentile (or critical) speed, and the 10-mile per pace speed.

The 85th Percentile Speed is the speed at which 85 percent of the vehicles are traveling at or below.

It is a key metric for determining speed limits and roadway design characteristics. ¼-'///,W///////////////////////,W/////////,W#///////////#//////////////////////////////////////////////..0'//I//////////////////I///// rkengineer.com
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RK20400 // 2310-2023-01 5-3
The 10-mile per hour pace speed is the 10-mile per hour range within which the largest number of observations fall. It is a key indicator of the speed at which most people are driving. A properly set speed limit will maximize the percentage of vehicles in the 10-mile per hour pace speed.

Tables 5-2, 5-3, and 5-4 summarize the results of the speed survey data.

Exhibits F-1, F-2 and F-3 illustrate the observed speed survey data within the study area.

Appendix D includes a copy ofthe speed survey count sheets.

The results of the speed surveys show excessive speeds on multiple roadway segments throughout the community. Excessive speeds occur when the 85th percentile speed is 8 mph or more above the posted/prima facie speed limit. In the Niguel Hills neighborhood, all internal streets have a prima facie speed limit of 25 mph, and therefore excessive speeds are considered 33 mph or higher. Excessive speeds were observed on La Plata Drive, Via Portola, and Vista Plaza Drive.

The highest recorded speeds are also noted in Tables 5-2, 5-3, and 5-4. While these speeds are normally considered outliers, it is worth noting that speeds over 60 mph were recorded.

5.4 Average Daily Traffic (ADT) Counts
24-hourtwo-way average daily traffic counts were conducted along thirty-two (32) roadway segments within the study area. ADT counts were conducted by Aim TD, LLC. Traffic counts took place during typical weekday and weekend conditions while local schools were in session and during clear weather conditions. ADT counts were conducted for the following days:
• Wednesday, April 17, 2024
• Thursday, April 18, 20242
• Saturday, April 20, 2024
Tables 5-2, 5-3, and 5-4 also summarize the results of the ADT data.

Exhibits G-1, G-2 and G-3 show the ADT counts within the study area.

Appendix E includes a copy of the ADT count sheets.
2 ADT counts along Golden Lantern were conducted on Thursday, May 16, 2024.

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ENGINli&RING
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RK20400 // 2310-2023-01 5-4
Table 5-2 I Speed Survey Summary - Wednesday, April 17, 2024 85th 10mph Percent Highest
Percentile Pace Recorded Roadway Segment ADT Speed Speed in Pace Speeds (mph) (mph) (%)

1. La Plata Drive 2,416 34 25-34 75% Crown Valley Parkway to Via Valverde

2. La Plata Drive 2,206 35 25-34 70% Via Valverde to Vista Plaza Drive

3. La Plata Drive 1,121 33 25-34 52% Vista Plaza Drive to Via Larga

4. La Plata Drive 871 34 25-34 57% Via Larga to Via Pan

5. La Plata Drive 812 32 25-34 64% Via Pan to Via Cebolla

6. La Plata Drive 228 24 15-24 59% Via Portola to Via Larga

7. Via Portola 739 34 25-34 53% La Plata Drive to La Vida Drive

8. Via Portola 803 33 20-29 61% La Vida Drive to Via De Anza

9. La Vida Drive 139 27 15-24 61% Rue De Gauguin to Via Portola

10. Via DeAnza 616 29 20-29 70% Via Baja Cerro to Los Osos Drive 11 . Via DeAnza 919 28 20-29 74% Los Osos Drive to Palo Drive

12. Via San Sebastian 235 23 15-24 69% South of Calle Vieja

13. Calle Vieja 424 17 15-24 38% Via San Sebastian to Via Valverde

14. Vista Plaza Drive 1,090 34 25-34 66% La Plata Drive to Calle Vieja

15. Vista Plaza Drive 572 28 20-29 72% Calle Vieja to La Plata Drive

16. Vista Plaza Drive 511 32 25-34 64% La Plata Drive to Via Piedra Blanca

17. Via Larga 172 29 20-29 66% La Plata Drive to La Plata Drive

18. La Estrada Drive 214 22 15-24 88% Via Piedra Roja to Los Osos Drive

19. Via Piedra Blanca 425 26 15-24 70% Vista Plaza Drive to Los Osos Drive

20. Via Piedra Blanca 441 30 20-29 67% Los Osos Drive to Via Alto Cerro 1 Traffic counts and speed surveys were conducted on Wednesday, April 17, 2024.

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(mph)
50-54
45-49
60-64
45-49
55-59
25-29
50-54
55-59
45-49
35-39
35-39
30-34
20-24
50-54
55-59
45-49
35-39
25-29
30-34
40-44

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RK20400 // 2310-2023-01 5-5
Table 5-3 I Speed Survey Summary - Thursday, April 18, 2024 85th 10 mph Percent Highest
Roadway Segment ADT Percentile Pace in Pace Recorded
Speed Speed Speeds
(mph) (mph) (%) (mph)

1. La Plata Drive 2,397 33 25-34 72% 55-59 Crown Valley Parkway to Via Valverde

2. La Plata Drive 2,130 35 25-34 71% 55-59 Via Valverde to Vista Plaza Drive

3. La Plata Drive 1,077 33 25-34 56% 45-49 Vista Plaza Drive to Via Larga

4. La Plata Drive 866 33 25-34 60% 50-54 Via Larga to Via Pan

5. La Plata Drive 795 32 25-34 62% 40-44 Via Pan to Via Cebolla

6. La Plata Drive 223 24 15-24 57% 30-34 Via Portola to Via Larga

7. Via Portola 731 34 25-34 53% 55-59 La Plata Drive to La Vida Drive

8. Via Portola 756 33 25-34 63% 45-49 La Vida Drive to Via De Anza

9. La Vida Drive 174 24 15-24 74% 30-34 Rue De Gauguin to Via Portola

10. ViaDeAnza 568 29 20-29 68% 40-44 Via Baja Cerro to Los Osos Drive 11 . Via DeAnza 941 28 20-29 70% 35-39 Los Osos Drive to Palo Drive

12. Via San Sebastian 214 23 15-24 73% 35-39 South of Calle Vieja

13. Calle Vieja 410 17 15-24 35% 20-24 Via San Sebastian to Via Valverde

14. Vista Plaza Drive 1,038 33 25-34 68% 40-44 La Plata Drive to Calle Vieja

15. Vista Plaza Drive 548 29 20-29 79% 35-39 Calle Vieja to La Plata Drive

16. Vista Plaza Drive 520 32 25-34 65% 40-44 La Plata Drive to Via Piedra Blanca

17. Via Larga 155 29 20-29 59% 35-39 La Plata Drive to La Plata Drive

18. La Estrada Drive 275 27 15-24 68% 35-39 Via Piedra Roja to Los Osos Drive

19. Via Piedra Blanca 416 26 15-24 70% 30-34 Vista Plaza Drive to Los Osos Drive

20. Via Piedra Blanca 440 30 20-29 64% 50-54 Los Osos Drive to Via Alto Cerro 1 Traffic counts and speed surveys were conducted on Thursday, April 18, 2024.

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RK20400 // 2310-2023-01 5-6
Table 5-4 I Speed Survey Summary - Saturday, April 20, 2024 85th 10mph Percent Highest
Roadway Segment ADT Percentile Pace in Pace Recorded
Speed Speed Speeds
{mph} {mph} {%} {mph}

1. La Plata Drive 1,889 34 25-34 75% 60-64 Crown Valley Parkway to Via Valverde

2. La Plata Drive 1,727 35 25-34 70% 50-54 Via Valverde to Vista Plaza Drive

3. La Plata Drive 944 31 20-29 50% 40-44 Vista Plaza Drive to Via Larga

4. La Plata Drive 718 33 25-34 61% 65-69 Via Larga to Via Pan

5. La Plata Drive 699 31 20-29 65% 40-44 Via Pan to Via Cebolla

6. La Plata Drive 193 24 15-24 62% 35-39 Via Portola to Via Larga

7. Via Portola 553 34 25-34 54% 50-54 La Plata Drive to La Vida Drive

8. Via Portola 636 33 25-34 60% 50-54 La Vida Drive to Via De Anza

9. La Vida Drive 131 26 15-24 61% 40-44 Rue De Gauguin to Via Portola

10. Via DeAnza 546 28 25-34 68% 60-64 Via Bajo Cerro to Los Osos Drive 11 . Via DeAnza 950 28 25-34 72% 35-39 Los Osos Drive to Palo Drive

12. Via San Sebastian 125 22 15-24 67% 25-29 South of Calle Vieja

13. Calle Vieja 218 18 15-24 50% 20-24 Via San Sebastian to Via Valverde

14. Vista Plaza Drive 787 33 25-34 69% 50-54 La Plata Drive to Calle Vieja

15. Vista Plaza Drive 446 28 20-29 77% 35-39 Calle Vieja to La Plata Drive

16. Vista Plaza Drive 424 32 25-34 68% 45-49 La Plata Drive to Via Piedra Blanca

17. Via Larga 150 30 20-29 67% 40-44 La Plata Drive to La Plata Drive

18. La Estrada Drive 246 26 15-24 70% 40-44 Via Piedra Roja to Los Osos Drive

19. Via Piedra Blanca 349 26 15-24 70% 30-34 Vista Plaza Drive to Los Osos Drive ·20. Via Piedra Blanca 353 29 20-29 60% 40-44 Los Osos Drive to Via Alto Cerro 1 Traffic counts and speed surveys were conducted on Saturday, April 20, 2024.

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Legend:
--- .. Study Are;, Boundary
© • Roadwiiy Segment/ Speed Survey Lociition
mph • Milas Pu Hour
-' • Tr,Hic Signal
(=:J • Exussw11 Speeds: 33 mph or above
27mph
15-24 mph
Adelanto Or(..,a
NOTE:
• Data obtained during typical condition~ with dry roadways • All roadways included in 1he sludy 11111a are residential roadways wilh a posled speed limit of 2S mph
-The 10-mph p.,ce speed is the rang• or 5peed al which the majorityorvehiclesarelravoling Exhibit F-1
24-Hour Speed Surveys
Wednesday, April 17, 2024 NIGUEL HIU S NEIGHBORHOOOTRAFFICCALMING STUDY II CITY OF LAGUNA NIGUEL Legend:
--- •St udy Area Boundary
© • Roadway Segment / Speed Survey l ocation
mph • Miles PIH Hour
'l} •TraHicSignal
~ - Ei«:HSIYI! S~eds 33 mph o r abovt
.Adol,n10 Orivo
◄ mph
15-24mpk
~
• D11t11 obtained during lypii:al conditions wlh dry roadways . All roadways included ,n the study area are residential roadways wilh a posted speed hmil ol 2S mph
. The 10 mph pace speed is the range of speed al which Lhe majority of vehicles ue tri,veling
I
1 \
28mph
20-29 mph
Exhibit F-2
24-Hour Speed Surveys
Thursday, April 18, 2024 NIGUEL HILLS NelGHBORHOODTRAFFIC CALMING STUDY II CITY OF LAGUNA NICiUEL t)i;o.10)01
Ul//#IIIIIIIIII RI< l4 NCQ//I////Q/#//#/I/I//.I//..W//QYllllllll/lll /llbll##l/#III/Hl/bll//#///////ll////##///Q/U/l/ll/l//lllllll//(/ll/,W/II/IHI/U/Ulll,- /l//////#/#'//ll//lll/#l//#/Q////l/l///l//ll//lllll/hll/l#l/l/#,'6Wdll/////l.WI//IH#/#/A'I.Q/#/~.,W##II///.Wh/l////Uh'.&Wll///d//h'Uh'/ll/////#//.I#/ Legend:
• ~ • S.111dy Aru utd (1
~---..£9)-=r-:l:-,6:-,m,-'ph'--I,.
15-l mph
(D a Roadway Segment/ Speed Survey Location
mph • Miles Per Hour
0 •TrafficSignal
E=3 - Excessive Speeds: 33 mph or above
85th%Speed
Adelanto Drive
~
• Data obtained during 1ypic11I conditions w~h dry roadways • Alt roadways included in the study area are res1denhat roadways with a pos1ed spud limil of 25 mph
• The 10 mph pace speed 1s the r.mgv or speed al which the majorityofveh1clesarelra~ling
Exhibit F-3
24-Hour Speed Surveys
Saturday, April 20, 2024 NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY II CITY OF LAGUNA NIGUEL ' 2)10.~t:101
//AW////////// ~-I~ l e~J~7:l'Nc11,r11111/(/M-';".,,,//h?'////.{/H//I///////I/I////Q//$///h"H/lrh"////(¢..QmY/#I//IY/Q//4"'..(l/..,Y/(#///l/////l#///#/l/#1111#1/#//1/Q/#///#/,",'/,9q'//ffe'/#P.I.QM'I////////H.&/M'p94.w..v1i/.l//i/1&11.u.w#/.U//n"..M'#.MW/l'..W.W11UM"..w/.W/U$/H//H111~/@#W//$/H/NH////&d~uw~ Legend:
--- • StudyA1•aBoundary
(D • Average DallyTreffo: (ADT) for Study Roadwo,y Segments • • Addrt1on11I Avarage Daily Traffic(ADT) Count Locations . .. A'larage- Da1lyTraffic{AOT)Count Locations Collected on Thursday, May 16, 2024 0 •TrafficS19na!
Adelanto Drive
~
• Data oblained during typ,cal conditions with dry ,oadways • Averc19e Daily Traffic Counts at e11ch locafion were collecte in both directions
Cl
!!.
~----1~
C"
i
;
Exhibit G-1
24-Hour Average Daily Traffic (ADT)
Wednesday, April 17, 2024 NIGUEL HIUS NEIGHBORHOOD TRAFFIC CALMING STUDY I/CITY OF LAGUNA NIGUEL u,-:-.:>o•
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Legend:
••• • Study Area Boundary
Ci) • Average Da~ylraKic {ADT) for Study Roadway Segmenls • • Additional Aver119e Daily Traffk(ADT)Count locations • • Average Da•y T re Kie (ADT) Count Locations Collected on Thu11day, May 16, 202-4 " •haKicSignal
DK] • LI --'-• ;;. DT'----'
Adelanto Drive
NOTE:
- Data cbta1n-d during typical coriditions with dry roadways - Average Daily Traffic: Counls at each loc:alion were collec:ted in both direc:tions
ExhibitG-3
24-Hour Average Daily Traffic (ADTI
Saturday, April 20, 2024 NIGUEL HILLS NEIGH80RHOOD TRAFFIC CALMING STUDY JI CITY OF LAGUNA NIGUEL 2Jl0-202JD1 ///////////////// RI( [~~J1~~NG .//1//.#1////.,W///l'/.WI/I/IIU/ll///ll///ll/////#/.I/..V///l////l//.l/'7/.Qll#////////I///II/IA'l////').7///(#I//II//H///ml'H///ll/l//1'11/#ll///l.t//lll///l/////ll///l//ll#Q'/l////lll/llll/l#M/ll/l>W-IIA'bllllW//IIIIHl)/.b'H/l/l#~I/..W#IIIIQ/I/IH/$//IHI/UUll/l.$"&//$//ll///$~/H.##/l/$/III/ RK20400 // 2310-2023-01 5-7

5.5 Cut-Through Traffic Surveys
In response to residents' concerns about cut-through traffic, an origin-destination (O-D) license plate survey was conducted at the two (2) main entry/exit points to the neighborhood. The locations were chosen to effectively capture the entry and exit points of vehicles traversing the area. The surveys involved recording the last four characters of the license plates of vehicles entering and exiting the neighborhood. For a trip to be classified as a cut-through trip, it must be shown that the vehicle neither originated from nor was destined for a location within the community. This was done by measuring the time interval it took for a car to traverse through the neighborhood.

Observations were made at key intersections bordering the study area using a methodology whereby the last four characters of every license plate were recorded, along with the time. The plates were then matched to find the number of vehicles which entered, then exited the study area within a five-minute window (any duration longer than five minutes was not counted as a cut-through because this indicated that there was probably a legitimate stop along the way).

It should be noted that the number of cut-through trips may be slightly overestimated due to quick stops, such as deliveries by UPS drivers or carpool pickups.

The cut-through license plate survey was conducted on Thursday, April 18, 2024, during the AM peak commute period (7 a.m. to 9 a.m.) and the PM peak commute period (4 p.m. to 6 p.m.).

Table 5-5 summarizes the results of the cut-through observations.

Exhibits H-1 show the cut-through traffic between Crown Valley and Golden Lantern during the AM peak period within the study area.

Exhibits H-2 show the cut-through traffic between Crown Valley and Golden Lantern during the PM peak period within the study area.

Appendix F includes a cut-through count sheets.

The study also counted the number of vehicles traveling through the neighborhood with origins/destinations along Weatherwood. However, these trips are not considered cut-through trips, as vehicles traveling to/from Weatherwood Avenue are utilizing the streets within the Niguel Hills neighborhood to access their home in the adjacent neighborhoods. This type of trip is not considered a cut-through trip as the route serves as a primary public access to a residence. Nonetheless, this issue was raised by residents, and it has been counted as part of the study for informational purposes and the results are shown in Table 5-5.

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RK // 2310-2023-01 5-8
Table 5-5 I Cut-Through Traffic Observations
AM Peak Period (7:00 AM to 9:00 AM) PM Peak Period (4:00 PM to 6:00 PM) Total Number Cut- Total Number
Route Destination Cut- Number of of Cut- Number of of CutEntering Through Through Entering Through Through Vehicles Vehicles' Rate Vehicles Vehicles' Rate
Origin: Crown Valley Parkway

1. Golden Lantern 1 1.2% 1 0.6%
82 156

2. Weatherwood Avenue 4 4.9% 3 1.9%
Origin: Golden Lantern

3. Crown Valley Parkway 9 5.2% 0 0%
172 164

4. Weatherwood Avenue 2 1.1% 3 1.8%
Origin: Weatherwood Avenue•

5. Crown Valley Parkway 29 41.4% 13 25%
70 52

6. Golden Lantern 6 8.5% 3 5.7%
Total Neighborhood Cut-Through Trips 324 51 15% 372 23 6.2% Neighborhood Average Cut-Through Rate 1 vehicle/ 2 minutes 1 vehicle / 5 minutes 1 A threshold of five (5) minutes was used as the maximum amount oft,me allotted for a vehicle - to travel each route in order for that tnp to count as a cut-through. 2 Weatherwood Avenue is a direct connection to an adjacent neighborhood. As such, most vehicles utilizing Weatherwood Ave to Crown Valley Pkwy and Golden Lantern are not considered cut-through trips.
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Legend:
- X% .. Percenl119e o{ Cut-Through Trips From Golden Lantern to Crown Valley Pkwy - X% • Percentage or Cut-Through Trips From Crown Valley P;,rkway to Golden Lantern ~
Cut Through Trips From Crown Valley Pkwy to Golden lantern: 1 trip Cut Through Trips From Golden l antern lo Crown Valley Pkwy: 9 lrIp$ Exhibit H-1
Cut-Through Trips
AM Peak Period (7:00 AM to 9:00 AM) ,,· - · ·i NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY 11 CllY OF LAGUNA NIGUEL • f U»:=>o• ///////////////// RK f ~f',!?fNCH7///IH//4@'//Q'//Q////Ul,W/ll/lll/l//"/I//Q'"/Q///I/////H/ll/////@.Q@/Q"///.(/////4"//II//IIIHM//l//l//ll #I/P/I/H#//l/.4:tW/dll,W///l/l///////,?'N/l/bM-,;~M'////////41/MW////////l//.l/l/ll/.~-¾Y.QM,W////I/A'I///IIRMW..VI//.Uk/PH#/IIA!::W-I..W#/IQ/,W.<VQ'.4V#QQ/M'I.-W.WHHIUHI//IW Legend:
- X% • P11rcentage of Cut-Through Trips From Golden Lantern lo Crown Valley Pkwy - X '!-b • Percentage of Cul•Through Trips From Crown Valley Parkw11y lo Golden Lantern

FINDINGS
Cut-Through Trips From Crown Valley Pkwy to Golden Lantern: 1 lrip Cut-Through Trips From Golden Lantern lo Crown Valley Pkwy: 0 lript Exhibit H-2
Cut-Through Trips
PM Peak Period (4:00 PM to 6:00 PM)

NIGUEL HILLS NEIGHBORHOOD TRAFF-IC CALMING STUDY II CITY OF LAGUNA NIGUEL ?)U,l'!:)111
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5.6 Peak Hour Intersection Turning Movement Counts
RK conducted peak hour intersection turning movement counts at four (4) study area intersections.

These counts were performed during typical weekday morning peak hours from 7 a.m. to 9 a.m. and evening peak hours from 4 p.m. to 6 p.m. During these periods, traffic volumes are typically at their highest due to residents commuting to and from work, school, and other activities. The data collected provides a detailed understanding of traffic patterns, including the number of vehicles making left, right, and through movements at each intersection.

Appendix G includes the intersection turning movement count sheets.

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6.0 Intersection Review - M ulti-Way Stop Warrants
The installation of multi-way stop control, also known as all-way stop control, is based on specific criteria to manage traffic flow effectively. Multi-way stop control should be installed where the volume of traffic on the intersecting roads is approximately equal. It should not be arbitrarily installed, as unwarranted stop signs can lead to several issues. When stop signs are placed without proper justification, they can encourage drivers to disobey the signs, leading to increased non-compliance and potential safety hazards. Additionally, unnecessary stop signs can cause drivers to stop more frequentl y, often resulting in them speeding up between intersections to make up for lost time. This behavior can increase the risk of accidents and reduce overall traffic efficiency. Stop signs regulate right-of-way are not considered traffic calming devices.

Multi-way stop warrants are used to determine the need to stop all approach legs at an intersection and are based on the criteria from the Californ ia Manual of Uniform Traffic Control Devi ces (CA MUTCD), Section 2B.07, Multi-Way Stop Applications.

6.1 Multi-Way Stop Warrants
RK performed multi-way stop warrants at the following four (4) intersections within the Niguel Hills community. To ensure accuracy, three days of traffic counts were performed, with the highest traffic day used to assess the multi-way stop warrants as a worst-case scenario oftypical weekday conditions. • Vista Plaza Drive at La Plata Drive
• Via Portola at La Plata Drive
• Via Portola at Via De Anza/Weathervvood
• Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive Appendix I includes a copy of the CA MUTCD multi-way stop warrant guidelines and worksheets.

Table 6-1 summarizes the results of the multi-way stop warrant analysis for the three-legged intersection of La Plata Drive and Vista Plaza Drive (west).

Table 6-2 summarizes the results of the multi-way stop warrant analysis for the three-legged intersection of La Plata Drive and Via Portola.

Table 6-3 summarizes the results of the multi-way stop warrant analysis for the three-legged intersection of Via De Anza/Weatherwood and Via Portola.

Table 6-4 summarizes the results of the multi-way stop warrant analysis for the three-legged intersection of Vista Plaza Drive and Via Piedra Blanca/La Estrada Drive.

As shown in Tables 6-1 through 6-4, none of the intersections reviewed met the criteria for multi-way stop control. However, several recommendations to improve sight distance and install stop signs on the minor streets are provided in Section 10.0.

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Table 6-1 CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Vista Plaza Drive
Warrant Description 1 Result
Intersection: La Plata Drive at Vista Plaza Drive
MUTCD Guidance: Where traffic control signals are justified, the multi-way stop is an interim measure that can be installed quickly to control traffic while arrangements are being made for the installation of the traffic control signal. Not A Discussion: A traffic signal is not warranted for this intersection and the multi-way Satisfied stop control would not function as an interim measure prior to installing a traffic signal.

MUTCD Guidance: Five or more reported crashes in a 12-month period that are susceptible to correction by a multi-way stop installation. Such crashes include rightturn and left-turn collisions as well as right-angle collisions. Not B Discussion: Based on data obtained from TIMS/SWITRS for the years 2019 to 2024, a Satisfied total of zero (0) reported collision has occurred within 250 feet of the intersection.

The collision records do not satisfy this requirement.

Minimum Volumes -
C. 1. MUTCD Guidance: The vehicular volume entering the intersection from the major C.1:
street approaches (total of both approaches) averages at least 300 vehicles per Not hour for any 8 hours of an average day; and Satisfied
Discussion: The highest 8-hour average minimum vehicular volume entering the intersection from the major street is 122 vehicles per hour, which is less than 300 vehicles per hour. C.1 not satisfied.

C.2. MUTCD Guidance: The combined vehicular, pedestrian, and bicycle volume C.2:
entering the intersection from the minor street approaches (total of both Not approaches) averages at least 200 units per hour for the same 8 hours, with an Satisfied C average delay to minor-street vehicular traffic of at least 30 seconds per vehicle during the highest hour; but
Discussion: The highest 8-hour average volume entering the intersection from the minor street is 49 vehicles per hour and the delay is 9.0 seconds per vehicle during the highest hour, which is less than 200 vehicles per hour and 30 seconds per vehicle, respectively. C.2 not satisfied.

C.3. MUTCD Guidance: If the 85th-percentile approach speed of the major-street C.3:
traffic exceeds 40 mph, the minimum vehicular volume warrants are 70 percent of Not the values provided in Items 1 and 2. Satisfied
Discussion: The measured 85th percentile speed of the major street is 34 mph, which is less than 40 mph. C.3 not satisfied.
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Table 6-1 CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Vista Plaza Drive
Warrant Description1 Result
Intersection: La Plata Drive at Vista Plaza Drive
MUTCD Guidance: Where no single criterion is satisfied, but where Criteria B, C.1, and C.2 are all satisfied to 80 percent of the minimum values. Criterion C.3 is excluded D from this condition. Not
Discussion: Criteria B, C.1, and C.2 are not satisfied to 80% of the minimum values.

Satisfied
Criteria D is not satisfied.

Other optional criteria listed in the MUTCD that may be considered in an engineering study include:

MUTCD Option: The need to control left-turn conflicts.

Discussion: The intersection is a T-intersection, with uncontrolled EB left-turns and Not
E stop controlled SB left-turns. There have been zero reported collisions associated Satisfied
with left-turn movements over the past five years. The need to control left-turn conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: The need to control vehicle/pedestrian conflicts near locations that generate high pedestrian volumes.

F
Discussion: Based on RK's field observations, the intersection does not experience Not high pedestrian volumes and there have been zero reported collisions involving Satisfied pedestrians over the past five years. The need to control vehicle/pedestrian conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: Locations where a road user, after stopping, cannot see conflicting traffic and is not able to negotiate the intersection unless conflicting traffic is also required to stop.

Discussion: The intersection has limited corner sight distance due to horizontal and G vertical curves, and landscaping obstructions. However, since zero reported collisions Not have occurred at this intersection, and since no other warrant criteria is satisfied, Satisfied interim measures to improve sight distance and reduce vehicle speeds are recommended instead of the installation of multi-way stop control. Appendix H includes a copy of the Orange County Highway Design Manual OC Standard Plan 1117 for intersection sight distance.

MUTCD Option: An intersection of two residential neighborhood collector streets of similar design and operating characteristics where multi-way stop control would H improve traffic operational characteristics of the intersection. Not Discussion: La Plata Drive and Vista Plaza Drive are local streets and do not satisfy the Satisfied
criteria for an intersection of two residential neighborhood collector streets. 1 CA MUTCD, Section 28.07, Muti-Way Stop Application.

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Table 6-2 I CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Via Portola
Warrant Description1 Result
Intersection: La Plata Drive at Via Portola
MUTCD Guidance: Where traffic control signals are justified, the multi-way stop is an interim measure that can be installed quickly to control traffic while arrangements are being made for the installation of the traffic control signal. Not A
Discussion: A traffic signal is not warranted for this intersection and the multi-way Satisfied stop control would not function as an interim measure prior to installing a traffic signal.

MUTCD Guidance: Five or more reported crashes in a 12-month period that are susceptible to correction by a multi-way stop installation. Such crashes include rightturn and left-tum collisions as well as right-angle collisions. Not B
Discussion: Based on data obtained from TIMS/SWITRS for the years 2019 to 2024, a Satisfied total of zero (0) reported collision has occurred within 250 feet of the intersection.

The collision records do not satisfy this requirement.

Minimum Volumes -
C.1. MUTCD Guidance: The vehicular volume entering the intersection from the major C.1 :
street approaches (total of both approaches) averages at least 300 vehicles per Not hour for any 8 hours of an average day; and Satisfied
Discussion: The highest 8-hour average minimum vehicular volume entering the intersection from the major street is 34 vehicles per hour, which is less than 300 vehicles per hour. C.1 not satisfied.

C.2. MUTCD Guidance: The combined vehicular, pedestrian, and bicycle volume C.2:
entering the intersection from the minor street approaches (total of both Not approaches) averages at least 200 units per hour for the same 8 hours, with an Satisfied C average delay to minor-street vehicular traffic of at least 30 seconds per vehicle during the highest hour; but
Discussion: The highest 8-hour average volume entering the intersection from the minor street is 33 vehicles per hour and the delay is 9.0 seconds per vehicle during the highest hour, which is less than 200 vehicles per hour and 30 seconds per vehicle, respectively. C.2 not satisfied.

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Table 6-2 I CA MUTCD Multi-Way Stop Warrant for La Plata Drive at Via Portola
Warrant Description 1 Result
Intersection: La Plata Drive at Via Portola
MUTCD Guidance: Where no single criterion is satisfied, but where Criteria B, C.1, and C.2 are all satisfied to 80 percent of the minimum values. Criterion C.3 is excluded D from this condition. Not
Discussion: Criteria B, C.1, and C.2 are not satisfied to 80% of the minimum values.

Satisfied
Criteria D is not satisfied.

Other optional criteria listed in the MUTCD that may be considered in an engineering study include:

MUTCD Option: The need to control left-tum conflicts.

Discussion: The intersection is a T-intersection, with uncontrolled SB left-turns and Not E stop controlled WB left-turns. There have been zero reported collisions associated Satisfied with left-turn movements over the past five years. The need to control left-turn conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: The need to control vehicle/pedestrian conflicts near locations that generate high pedestrian volumes.

F Discussion: Based on RK's field observations, the intersection does not experience Not high pedestrian volumes and there have been zero reported collisions involving Satisfied pedestrians over the past five years. The need to control vehicle/pedestrian conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: Locations where a road user, after stopping, cannot see conflicting traffic and is not able to negotiate the intersection unless conflicting traffic is also required to stop.

Discussion: The intersection has limited corner sight distance due to landscaping and G
on-street parking in the limited use area. However, since zero reported collisions Not have occurred at this intersection, and since no other warrant criteria is satisfied, on- Satisfied going landscape maintenance is recommended instead of the installation of multiway stop control to help improve sight distance and reduce potential conflicts.

Appendix H includes a copy of the Orange County Highway Design Manual OC Standard Plan 1117 for intersection sight distance.

MUTCD Option: An intersection of two residential neighborhood collector streets of similar design and operating characteristics where multi-way stop control would H improve traffic operational characteristics of the intersection. Not Discussion: La Plata Drive and Via Portola are local streets and do not satisfy the Satisfied
criteria for an intersection of two residential neighborhood collector streets. 1 CA MUTCD, Section 2B.07, Muti-Way Stop Application.

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Table 6-3 I CA MUTCD Multi-Way Stop Warrant for Via De
Anza/Weatherwood at Via Portola
Warrant Description 1
Intersection: Via De Anza/Weatherwood at Via Portola
MUTCD Guidance: Where traffic control signals are justified, the multi-way stop is an interim measure that can be installed quickly to control traffic while arrangements are being made for the installation of the traffic control signal.

A
Discussion: A traffic signal is not warranted for this intersection and the multi-way stop control would not function as an interim measure prior to installing a traffic signal.

B
Discussion: Based on data obtained from TIMS/SWITRS for the years 2019 to 2024, a total of zero (0) reported collision has occurred within 250 feet of the intersection.

The collision records do not satisfy this requirement.

Minimum Volumes -
C.1. MUTCD Guidance: The vehicular volume entering the intersection from the major street approaches (total of both approaches) averages at least 300 vehicles per hour for any 8 hours of an average day; and
Discussion: The highest 8-hour average minimum vehicular volume entering the intersection from the major street is 46 vehicles per hour, which is less than 300 vehicles per hour. C.1 not satisfied.

C.2. MUTCD Guidance: The combined vehicular, pedestrian, and bicycle volume entering the intersection from the minor street approaches (total of both approaches) averages at least 200 units per hour for the same 8 hours, with an C average delay to minor-street vehicular traffic of at least 30 seconds per vehicle during the highest hour; but
Discussion: The highest 8-hour average volume entering the intersection from the minor street is 23 vehicles per hour and the delay is 9.0 seconds per vehicle during the highest hour, which is less than 200 vehicles per hour and 30 seconds per vehicle, respectively. C.2 not satisfied.

C.3. MUTCO Guidance: If the 85th-percentile approach speed of the major-street traffic exceeds 40 mph, the minimum vehicular volume warrants are 70 percent of the values provided in Items 1 and 2.

Discussion: The measured 85th percentile speed of the major street is 29 mph, which is less than 40 mph. C.3 not satisfied.
6-6
Result
Not
Satisfied
Not
Satisfied
C.1:

Not
Satisfied
C.2:

Not
Satisfied
C.3:

Not
Satisfied
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RK20400 / / 2310-2023-01
Table 6-3 I CA MUTCD Multi-Way Stop Warrant for Via De
Anza/Weatherwood at Via Portola
Warrant Description1
Intersection: Via De Anza/Weatherwood at Via Portola
MUTCD Guidance: Where no single criterion is satisfied, but where Criteria B, C.1, and C.2 are all satisfied to 80 percent of the minimum values. Criterion C.3 is excluded D from this condition.

Discussion: Criteria B, C.1, and C.2 are not satisfied to 80% of the minimum values.

Criteria D is not satisfied.
6-7
Result
Not
Satisfied
Other optional criteria listed in the MUTCD that may be considered in an engineering study include:

MUTCD Option: The need to control left-turn conflicts.

Discussion: The intersection is a T-intersection, with uncontrolled NB and EB leftNot E turns. There have been zero reported collisions associated with left-turn movements Satisfied
over the past five years. A stop sign on the minor street is recommended to help control left-turn conflicts but the multi-way stop criteria is not satisfied.

MUTCD Option: The need to control vehicle/pedestrian conflicts near locations that generate high pedestrian volumes.

F Discussion: Based on RK's field observations, the intersection does not experience Not high pedestrian volumes and there have been zero reported collisions involving Satisfied pedestrians over the past five years. The need to control vehicle/pedestrian conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: Locations where a road user, after stopping, cannot see conflicting traffic and is not able to negotiate the intersection unless conflicting traffic is also required to stop.

Discussion: The intersection has limited corner sight distance due to landscaping and G on-street parking in the limited use area. However, since zero reported collisions Not have occurred at this intersection, and since no other warrant criteria is satisfied, on- Satisfied going landscape maintenance is recommended instead of the installation of multiway stop control to help improve sight distance and reduce potential conflicts.

Appendix H includes a copy of the Orange County Highway Design Manual OC Standard Plan 1117 for intersection sight distance.

MUTCD Option: An intersection of two residential neighborhood collector streets of similar design and operating characteristics where multi-way stop control would H improve traffic operational characteristics of the intersection. Not Discussion: Via De Anza/Weatherwood and Via Portola are local streets and do not Satisfied
satisfy the criteria for an intersection of two residential neighborhood collectors. 1 CA MUTCD, Section 2B.07, Muti-Way Stop Application.

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Table 6-4 I CA MUTCD Multi-Way Stop Warrant for Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive
Warrant Description1 Result
Intersection: Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive MUTCD Guidance: Where traffic control signals are justified, the multi-way stop is an interim measure that can be installed quickly to control traffic while arrangements are being made for the installation of the traffic control signal. Not A
Discussion: A traffic signal is not warranted for this intersection and the multi-way Satisfied stop control would not function as an interim measure prior to installing a traffic signal.

The collision records do not satisfy this requirement.

Minimum Volumes -
C. 1. MUTCD Guidance: The vehicular volume entering the intersection from the major C.1:
street approaches (total of both approaches) averages at least 300 vehicles per Not hour for any 8 hours of an average day; and Satisfied
Discussion: The highest 8-hour average minimum vehicular volume entering the intersection from the major street is 28 vehicles per hour, which is less than 300 vehicles per hour. C.1 not satisfied.

C.2. MUTCD Guidance: The combined vehicular, pedestrian, and bicycle volume C.2:
entering the intersection from the minor street approaches (total of both Not approaches) averages at least 200 units per hour for the same 8 hours, with an Satisfied C average delay to minor-street vehicular traffic of at least 30 seconds per vehicle during the highest hour; but
Discussion: The highest 8-hour average volume entering the intersection from the minor street is 19 vehicles per hour, which is less than 200 vehicles per hour.

Delay assumed less than 30 seconds. C.2 not satisfied.

C.3. MUTCD Guidance: If the 85th-percentile approach speed of the major-street C.3:
traffic exceeds 40 mph, the minimum vehicular volume warrants are 70 percent of Not the values provided in Items 1 and 2. Satisfied
Discussion: The measured 85th percentile speed of the major street is 29 mph, which is less than 40 mph. C.3 not satisfied.
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RK20400 // 2310-2023-01 6-9
Table 6-4 I CA MUTCD Multi-Way Stop Warrant for Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive
Warrant Description1 Result
Intersection: Vista Plaza Drive at Via Piedra Blanca/La Estrada Drive MUTCD Guidance: Where no single criterion is satisfied, but where Criteria B, C.1, and C.2 are all satisfied to 80 percent of the minimum values. Criterion C.3 is excluded D from this condition. Not
Discussion: Criteria B, C.1, and C.2 are not satisfied to 80% of the minimum values.

Satisfied
Criteria D is not satisfied.

Other optional criteria listed in the MUTCD that may be considered in an engineering study include:

MUTCD Option: The need to control left-turn conflicts.

Discussion: The intersection is a T-intersection, with uncontrolled NB left-turns and Not
E uncontrolled EB left-turns. There have been zero reported collisions associated with Satisfied left-turn movements over the past five years. The multi-way stop criteria is not satisfied.

MUTCD Option: The need to control vehicle/pedestrian conflicts near locations that generate high pedestrian volumes.

F Discussion: Based on RK's field observations, the intersection does not experience Not high pedestrian volumes and there have been zero reported collisions involving Satisfied pedestrians over the past five years. The need to control vehicle/pedestrian conflicts is not a primary reason to install multi-way stop control.

MUTCD Option: Locations where a road user, after stopping, cannot see conflicting traffic and is not able to negotiate the intersection unless conflicting traffic is also required to stop.

Discussion: The intersection has limited corner sight distance due to horizontal and Not G vertical curves, and landscaping obstructions. However, since zero reported collisions Satisfied
have occurred at this intersection, and since no other warrant criteria is satisfied, installation of multi-way stop control is not recommended currently. Appendix H includes a copy ofthe Orange County Highway Design Manual OC Standard Plan 1117 for intersection sight distance.

MUTCD Option: An intersection of two residential neighborhood collector streets of similar design and operating characteristics where multi-way stop control would improve traffic operational characteristics of the intersection. Not H
Discussion: Vista Plaza Drive and Piedra Blanca/La Estrada are local streets and do Satisfied not satisfy the criteria for an intersection of two residential neighborhood collector streets.
1 CA MUTCD, Section 2B.07, Muti-Way Stop Application.

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Table 7-1 CA MUTCD Traffic Signal Warrants for Golden Lantern at Via De Anza
Traffic Signal Description1 Result Warrant
Intersection: Golden Lantern (NS) at Via De Anza (EW)
1 Eight-Hour Vehicular Volume Not Satisfied
2 Four-Hour Vehicular Volume Not Satisfied
3 Peak Hour Not Satisfied
4 Pedestrian Volume Not Satisfied
5 School Crossing Not Satisfied
6 Coordinated Signal System Not Satisfied
7 Crash Experience Not Satisfied
8 Roadway Network Not Satisfied
9 Intersection Near a Grade Crossing Not Satisfied
1 CA MUTCD Chapter 4C. Traffic Control Needs Studies.
7 .1 Traffic Signal Warrant 1 - Eight Hour Vehicular Volume 7-2
Warrant 1 states that a traffic control signal shall be considered if either ofthe following conditions are met for any eight (8) hours of an average day:
• Condition A: Minimum Vehicular Volume. Condition A is intended for application at locations where a large volume of intersecting traffic is the principal reason to consider installing a traffic signal; or
• Condition B: Interruption of Continuous Traffic. Condition B is intended for application at locations where the volume of traffic on the major street is so heavy that traffic on the minor street experiences excessive delay or conflict in entering or crossing the major street. • Combination A & B: If the minimum required traffic volumes for Warrant 1 are not satisfied, the combination of Conditions A and B can be utilized to satisfy the warrant.

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7 .0 Intersection Review - Traffic Signal Warrants
The decision to install traffic signals is guided by specific criteria designed to enhance safety and manage traffic flow effectively. Traffic signals should only be installed when warranted, as unwarranted signals can lead to increased delays, driver frustration, and potential safety hazards. The criteria for determining the need for traffi c signals are outlined in the California Manual of Uniform Traffic Control Devices (CA MUTCD), Chapter 4C.

Traffic signal warrants are used to evaluate the necessity of signalization at intersections based on various factors, including traffic volume, crash history, and roadway conditions. These warrants ensure that traffic signals are implemented where they are most needed to improve overall intersection safety and efficiency.

RK performed a traffic signal warrant analysis at the intersection of Golden Lantern and Via De Anza.

The analysis was based on the criteria from CA MUTCD Chapter 4C, which includes the following warrants:
• Warrant 1: Eight-Hour Vehicular Volume
• Warrant 2: Four-Hour Vehicular Volume
• Warrant 3: Peak Hour
• Warrant 4: Pedestrian Volume
• Warrant 5: School Crossing
• Warrant 6: Coordinated Signal System
• Warrant 7: Crash Experience
• Warrant 8: Roadway Network
• Warrant 9: Intersection Near a Grade Crossing
Appendix J includes a copy of the CA MUTCD traffic signal warrant guidelines and worksheets.

Table 7-1 summarizes the results of the traffic signal warrant analysis for the intersection of Golden Lantern and Via De Anza . As shown in Table 7-1, the intersection did not meet the criteria for traffic signal installation based on the analyzed warrants. However, several recommendations to improve traffic flow and safety at this intersection are provided in Section 10.0. ~/2/////////////$/////////////////////1/////////,W/////////////////////////////////////////////W///////////////////////////////////// RI< I ~~g~~~ING rkengineer.com
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Since the posted speed limit on the major road (Golden Lantern) exceeds 40 mph, Warrant 1 only needs to be satisfied to 70% ofthe required volume for Condition A and Condition B, and 56% ofthe required volume for the combination of A & B. The traffic volume along Golden Lantern is high enough to satisfy Warrant 1, but the minor street volume on Via De Anza does not meet the minimum requirements for Condition A, Condition B, or the combination of A & B. Warrant 1 is NOT satisfied. 7 .2 Traffic Signal Warrant 2 - Four-Hour Vehicular Volume Warrant 2 states that a traffic control signal shall be considered where the volume of intersecting traffic, for each of any four (4) hours of an average day, meets the minimum vehicular volume requirements. Since the posted speed limit on the major road (Golden Lantern) exceeds 40 mph, the traffic signal warrants only need to be satisfied to 70% ofthe required volumes The traffic volume along Golden Lantern is high enough to satisfy Warrant 2, but the minor street volume on Via De Anza does not meet the minimum requirements for any of the highest four traffic hours of the day. Warrant 2 is NOT satisfied.

7.3 Traffic Signal Warrant 3 - Peak Hour Vehicular Volume Warrant 3 states that a traffic control signal shall be considered where traffic conditions are such that for a minimum of one (1) hour of an average day, the minor street suffers undue delay when entering or crossing the major street. Warrant 3 can be satisfied if either of the following parts (Part A or Part B) are satisfied:

Part A
Part A is satisfied if all three (3) of the following conditions exist for the same one (1) hour (any four consecutive 15-minute periods) of an average day:

1. The total stopped time delay experienced by the traffic on one minor-street approach (one direction only) controlled by a STOP sign equals or exceeds: 4 vehicle-hours for a one-lane approach or 5 vehicle-hours for a two-lane approach (NOT Satisfied); and

2. The volume on the same minor-street approach (one-direction only) equals or exceeds 100 vehicles per hour for one moving lane of traffic or 150 vehicles per hour for two moving lanes (NOT Satisfied); and

3. The total entering volume serviced during the hour equals or exceeds 650 vehicles per hour for intersections with three approaches or 800 vehicles per hour for intersections with four or more approaches. (Satisfied)
Part A is NOT satisfied.
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Part B
Part Bis satisfied ifthe plotted point of vehicles per hour on the major street (total of both approaches) and the corresponding vehicles per hour on the higher-volume minor-street approach (one direction only) for one (1) hour (any four consecutive 15-minute periods) falls above the applicable curve in MUTCD Figure 4C-3 for the existing combination of approach lanes. The plotted point representing the peak hour volume combination shown in the traffic signal warrant worksheets falls above the applicable curve (70% Factor) in Figure 4C-3. Part Bis NOT satisfied.

Warrant 3 is NOT satisfied.
7 .4 Traffic Signal Warrant 4 - Pedestrian Volume
Warrant 4 is intended for applications where the traffic volume on a major street is so heavy that pedestrians experience excessive delays in crossing the major street.

The intersection of Golden Lantern and Via De Anza does not experience high pedestrian volume crossing the major street. Warrant 4 is NOT Satisfied.
7 .5 Traffic Signal Warrant 5 - School Crossing
Warrant 5 is intended for applications where schoolchildren crossing the major street is the principal reason to consider installing a traffic control signal.

The intersection is not located within 1,000 feet of a school and it is not a designated school crossing route. Warrant 5 is NOT satisfied.
7 .6 Traffic Signal Warrant 6 - Coordinated Signal System Warrant 6 is intended for intersections where the installation of a traffic control signal is needed to maintain the progressive movement and proper platooning of vehicles along a roadway with a coordinated signal system.

The study intersection does not need a traffic signal to maintain the progressive movement and proper platooning of vehicles along the roadway. Warrant 6 is NOT satisfied.

7.7 Traffic Signal Warrant 7 - Crash Experience
Warrant 7 is intended for application at intersections where the severity and frequency of crashes are principal reasons to install a traffic control signal.

Warrant 7 is satisfied if all the following criteria are met:

A. Adequate trial of alternatives with satisfactory observance and enforcement has failed to reduce the crash frequency (Satisfied); and
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B. Five (5) or more reported crashes, of types susceptible to correction by a traffic control signal, have occurred within 12 months, each crash involving personal injury or property damage exceeding the applicable requirements for a reportable crash {NOT Satisfied); and C. For each of any eight (8) hours of an average day, the minimum required traffic volumes in both of the 80% columns of Warrant 1 Condition A in Table 4C-1 (see Section 4C.02 of the MUTCD), or the minimum required traffic volumes in both of the 80% columns of Warrant 1 Condition B in Table 4C-1, exist on the major street and the higher-volume minor-street approach, respectively, to the intersection; or the volume of pedestrian traffic is not less than 80% of the requirements specified in Warrant 4. These major-street and minor-street volumes shall be for the same eight (8) hours. On the minor street, the higher volume shall not be required to be on the same approach during each of the eight (8) hours. {NOT Satisfied) As previously mentioned, RK obtained and reviewed SWITRS traffic collision data from the TIMS website. Table 7-2 shows the results of the SWITRS collision data at Golden Lantern and Via De Anza, by year. A total offive (5) correctable collisions have occurred within 250 feet ofthe intersection in the past five (5) years, with a maximum oftwo (2) collisions occurring in a twelve-month period. Since less than five (5) correctable collisions have been reported within a recent 12-month period, Warrant 7 is NOT satisfied.

Table 7-2 I Golden Lantern at Via De Anza Collision History1 Year
Intersection Total
2019 2020 2021 2022 2023
Golden Lantern at Via De Anza 1 1 0 1 2 5
1 Only collisions of types susceptible to correction by a traffic control signal are reported. (i.e., collisions caused by impaired drivers or other factors not typically correctable by a traffic signal were not counted.) 7 .8 Traffic Signal Warrant 8 - Roadway Network
Warrant 8 states that installing a traffic control signal at the intersection of two or more major routes might be justified to encourage concentration and organization of traffic flow on a roadway network.

Golden Lantern is considered a major route, as shown in the City of Laguna Niguel General Plan.

However, Via De Anza is not a major route. Therefore, the study intersection is not considered to be an intersection of two (2) or more major routes. Warrant 8 is NOT satisfied.

7.9 Traffic Signal Warrant 9 - Intersection Near a Grade Crossing Warrant 9 is intended to be used at a location where none of the conditions described in the other eight traffic signal warrants are met, but proximity to an at-grade rail crossing is the principal reason to consider installing a traffic control signal. The study intersection is not located near an at-grade rail crossing. Warrant 9 is NOT satisfied.

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8.0 Findings and Recommendations

8.1 Summary of Findings
The Niguel Hills Neighborhood Traffic Study was conducted to address ongoing concerns about speeding and safety from residents of the Niguel Hills neighborhood. The study follows a systematic approach to identify opportunities for improvement, using traffic data, field observations, and feedback from local stakeholders. The recommendations focus on physical and operational changes designed to reduce vehicle speeds and enhance safety for all roadway users. This traffic calming review is aligned with the City's policies and guidelines described in the Laguna Niguel Residential Traffic Management Policy.

Community Feedback: Residents provided feedback through various channels, including three town hall meetings, email, text messages, and a comprehensive traffic calming survey. A total of 185 comments were received, highlighting multiple areas of concern throughout the community. The main issues raised by residents included excessive speeding, cut-through traffic, and pedestrian safety.

Speeding: Speed surveys conducted on April 17, 18, and 20, 2024, revealed that the 85th percentile speeds on several streets, including La Plata Drive, Via Portola, and Vista Plaza Drive, exceed the posted speed limit of 25 mph by 8 mph or more.

Traffic Collisions: Historical data showed eleven collisions within the study area over the past five years, with a range of factors including unsafe speeds, unsafe starting or backing, auto right-of-way, and driver under the influence being among the most common causes. However, no street segment or intersection experienced five correctable collisions or more within a 12-month period, which is the State's criterion to warrant additional traffic control such as a traffic signal or multi-way stop control.

Cut-Through Traffic: An origin-destination (O-D) license plate survey conducted on April 18, 2024, during the AM and PM peak commute periods, revealed that cut-through traffic is not a significant issue in the neighborhood. Traffic from Crown Valley Parkway and Golden Lantern is not using the neighborhood as a shortcut to avoid congestion or delay. This finding suggests that the majority of vehicles traveling through the neighborhood are either originating from or destined for locations within the community, rather than bypassing external traffic congestion.

8.2 Recommendations
Based on the findings of the Niguel Hills Neighborhood Traffic Study, RK has developed a comprehensive set of recommendations to address the identified traffic and safety concerns within the community. These recommendations focus on implementing effective traffic calming measures throughout the community to reduce speeding and improve overall traffic flow. The proposed measures include the installation of speed humps, roadway striping to visually narrow the streets, intersection improvements, and additional regulatory and warning signage. Each recommendation is designed to address specific issues identified through traffic data analysis, field observations, and community feedback.
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A total of 14 new speed humps are proposed throughout the community. The recommendations adopt a comprehensive approach, strategically placing speed humps and traffic calming features on the most critical segments to address speeding issues. This strategy also includes placing speed humps on other segments to prevent diverted trips and considers limitations such as grades above 8%, where speed humps are not recommended be installed due to the steepness ofthe grade.

Exhibit I provides an overview of the recommended improvements.

Additionally, it is recommended that the City contact homeowners to trim back landscaping to help improve corner sight distance near intersections.

8.2.1 La Plata Drive
La Plata Drive serves as the primary access to the community from Crown Valley Parkway, and it experiences the highest volume oftraffic and the fastest speeds within the community. A total ofthree (3) speed humps are recommended along La Plata Drive.

It is recommended that the City contact homeowners to trim back landscaping to help improve intersection corner sight distance along La Plata Drive.

Exhibit 1-1 shows the conceptual roadway improvements for La Plata Drive from Crown Valley Parkway to Vista Plaza Drive (Segments 1 & 2). La Plata Drive is 64 feet wide along this segment and several of the key measures are provided to help visually narrow the roadway. The segment has a grade of more than 8%, and therefore, speed humps are not recommended here.

Exhibit 1-2: shows the conceptual roadway improvements for La Plata Drive from Vista Plaza Drive to Via Larga (Segment 3). Improvements are recommended at the intersection of La Plata Drive with Vista Plaza Drive to improve sight distance. Painted curb extensions are recommended along with a shifted stop bar and a new high-visibility continental crosswalk. One (1) speed hump is recommended for this segment.

Exhibit 1-3: shows the conceptual roadway improvements for La Plata Drive from Via Larga to Via Pan (Segment 4). One (1) speed hump is recommended on this segment and new stop signs, stop bars, and stop legends are recommended on Via Larga and Via Pan at the intersections with La Plata Drive.

Exhibit 1-4: shows the conceptual roadway improvements for La Plata Drive from Via Pan to Via Portola (Segment 5). One (1) speed hump is recommended on this segment and new stop signs, stop bars, and stop legends are recommended on Via Pan and Via Cebolla at the intersections with La Plata Drive.

8.2.2 Via Portola
Via Portola is a little over 1,000 feet in length, but it experiences some of the highest 85th-percentile speeds in the community. However, with grades above 8%, speed humps are not recommended. To attempt to slow traffic, roadway striping is recommended to help visually narrow the roadway.

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Exhibit 1-5 shows the conceptual roadway improvements for Via Portola from La Plata Drive to La Vida Drive (Segment 7). The grade along this segment is an average of 9.8% which is too steep for speed humps. A double yellow centerline (Detail 22) is recommended along this segment.

Exhibit 1-6 shows the conceptual roadway improvements for Via Portola from La Vida Drive to Via De Anza (Segment 8). The grade along this segment is an average of 12.4% which is too steep for speed humps. A double yellow centerline (Detail 22) is recommended and a new stop sign, stop bar, and stop legend are recommended on Via Portola at the intersection of Via De Anza/Weatherwood.

8.2.3 La Vida Drive
La Vida Drive is a low-volume residential street that did not experience some of the excessive speeding seen on other streets within the community. However, several residents on La Vida expressed concerns about diverted traffic down their street if speed humps were installed on La Plata Drive. To address the issue of potential diverted traffic, two (2) speed humps are recommended along La Vida Drive.

Exhibit 1-7 shows the conceptual roadway improvements for La Vida Drive from Rue De Gaugin to Via Portola (Segment 9). Two-speed humps are recommended along this segment.

8.2.4 Via DeAnza
Via De Anza serves as the primary access to the community from Golden Lantern and carries higher volumes of traffic than other streets in the neighborhood. A total of three (3) speed humps are recommended on Via De Anza. During the public outreach process, RK received feedback from residents on Via De Anza expressing their dislike of roadway striping. To be receptive to the residents' preferences, RK has limited the amount of additional roadway striping recommended along the street, despite our professional opinion that more striping could be beneficial.

Exhibit 1-8 shows the conceptual roadway improvements for Via De Anza from Via Portola to Los Osos Drive (Segment 10). Two (2) speed humps are recommended along this segment with centerline striping only at the humps.

Exhibit 1-9 shows the conceptual roadway improvements for Via De Anza from Los Osos Drive to Palo Drive (Segment 11 ). One (1) speed hump is recommended along this segment with centerline striping only at the humps.

8.2.5 Vista Plaza Drive
Vista Plaza Drive runs along the north end ofthe neighborhood and has grades that vary from 8.4% to

1.5%. A total of three (3) speed humps are recommended along Visa Plaza Drive, where grades permit.

Exhibit 1-10 shows the conceptual roadway improvements for Vista Plaza Drive from La Plata Drive to Calle Vieja (Segment 14). This exhibit shows the recommended intersection improvements at Vista Plaza Drive and La Plata Drive, including a relocated stop bar, a new high visibility continental

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crosswalk, and painted curb extensions. The grade along this section of Vista Plaza Drive is 8.4%, which is more than the maximum grade recommended for speed humps. Therefore, double yellow centerline stripping (Detail 22) is recommended to help visually narrow the roadway.

Exhibit 1-11 shows the conceptual roadway improvements for Vista Plaza Drive from Calle Vieja to La Plata Drive East (Segment 15). Two (2) speed humps are recommended along this segment. Double yellow centerline stripping (Detail 22) is also recommended to help visually narrow the roadway.

Exhibit 1-12 shows the conceptual roadway improvements for Vista Plaza Drive from La Plata Drive East to La Estrada Drive (Segment 16). One (1) speed hump is recommended along this segment.

Double yellow centerline stripping (Detail 22) is also recommended to help visually narrow the roadway. A new stop sign, stop bar, and stop legend are recommended on La Plata Drive at the intersection of Vista Plaza Drive.

8.2.6 Via Larga
Via Larga is a low-volume residential street that does not experience some ofthe excessive speeding seen on other streets within the community. However, several residents on Via Larga expressed concerns about diverted traffic down their street if speed humps were installed on La Plata Drive or Vista Plaza Drive. To address the issue of potential diverted traffic, two (2) speed humps are recommended along Via Larga.

Exhibit 1-13 shows the conceptual roadway improvements for Via Larga from La Plata Drive to La Plata Drive (Segment 17). Two (2) speed humps are recommended along this segment, with double yellow centerline striping (Detail 22) at the humps. New stop signs, stop bars, and stop legends are recommended on Via Larga at both intersections with La Plata Drive.

8.2.7 Via Piedra Blanca/Palo Drive
Via Piedra Blanca and Palo Drive provide residential access and have observed 85th percentile speeds of approximately 29-30 miles per hour. While these speeds are not considered excessive, traffic calming measures are recommended along these segments to help prevent diverted trips and to create a more comprehensive plan for managing speeds within the neighborhood.

Exhibit 1-14 shows the conceptual roadway improvements along Via Piedra Blanca and Palo Drive from Los Osos Drive to Via De Anza (Segment 20). One (1) speed hump is recommended on Palo Drive, with double yellow centerline striping (Detail 22) at the humps. A new stop sign, stop bar, and stop legend are recommended on Los Osos Drive and Via Alto Cerro at Via Piedra Blanca.

8.3 Speed Hump Design
Speed humps are "vertical" traffic calming devices that are implemented by way of asphalt work to create a physical attenuator to traffic speeds. These devices are, literally, lumps in the pavement that encourage motorists to slow down, but that are designed with specific dimensions to cause no impedance to the travel of emergency response vehicles on the local streets. At each location, either I
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three (3) or four (4) cushions are installed and are delineated by: (1) white chevron stencils on each cushion; (2) BUMP AHEAD pavement text in advance (both directions) of each set of cushions; and (3) a warning sign, showing a symbol representation of a bump, in advance (both directions) of each set of cushions.

All speed humps are recommended to be constructed from asphalt. Based on our experience, asphalt speed humps provide a smoother transition for vehicles compared to rubberized humps, which can be more jarring for drivers and create additional noise. Therefore, rubberized speed humps are not recommended .

Exhibit J-1 shows the speed cushion detail for 30-foot-wide streets.

Exhibit J-2 shows the speed cushion detail for 36- to 40-foot-wide streets.

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=
- Proposed Asphall Spud Hump loc111ion (1-4 T olalJ
@ - Jntersectlon lmpr011emena
Exhibit I
Conceptual Roadway Improvements
All Segments
NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALl.41NG STUDY /ICrTV OF LAGUNA NIGUEL Utc-711.HJ
( l/ll11..u1)//lt/1R I( ~=~~~G-1q/H/111mu1111/UU/#/UQIUl//#I..Wll#'Q'//IIIHUl/1q111n111'9'1u111111,1H/IHll'@/l/l?'Hll$lll'i'l@l/lll/ t/Qtl/rl'..W/"IUmm11//l/"llll#l/h'IIM'l#.&'/#IHIIUII/IIIH#ll (ll/1.11.,w.1/ -:t///ll11Q'.l//lll/l,:Q/ll,l//l#HII/IQll//l/ll/mt~~1~11Mum~11HNU/d11111~u~W$/I Legend
le • lnst11IIStopS,9n(R1-1)
le • Install Yield lo Pede~nans S,gn {R1 -6)
)9 • Install Yield Hll!r• lo Pedestrians S,gn (Rl-5)
- • lnsiall Yellow Centv,hne (Detail 22)
--- .. Install Two-Way Leh Turn Lane !Dela~ 32)
@ •lns111ll6.Wh,teEdgeline(Deto1 il27B)
Nol11 Sandblasl All Connicting Striping
Note: Refresh All Eir.isting Strip•ng Not Conlllcting with Proposed lmprov1tmenls
Note: Tnm and Maintain All l11ndscaping lo Ensure Adequalv Sogh!Or,J.-.;.

Rl-1 Rl 6 RJ.S
Nole: Drawil'\g not to scale
Exhibit 1-1
Conceptual Roadway Improvements (Segment 1 & 2)
La Plata Drive from Crown Valley Parkway to Vista Plaza Drive 1 NIGUEL HILLS NEIGHSORHOOD l'IAFFICCALMING STUDY 1/CrrY OF LAGU':t~!:~~ ///1//II//I/I//I/ ~ ( i ~~~\~IP-IC,U/h'I/IIIH///I//MQl//lll///ll/$//Mf4;'l{/l(/l/l/ll/ll'/.,YIY/I/IIIIHI/P'HI/U'/#.¢1AWl.lll/#l##.,V.,/.-¼W/IH#/#/ll#/#l.4?//#k'I///H//////.$/ll//ll#.iw/lQ//Q//l/,w/,(l;H/1'1'1Lh'/Ui'N/h//lllllllll/N'll/##/#ll#IIIIII//Ull/##/Ull////#////#l///l/ll///l///ll//111//1/)IIH#II/IIMIH//.VH/ • Install Stop Sign (Rl-1)
• Install Stop Ah.ad Sign (W3-1)
jl, • lnstaU "Bump" Sign(W8-1)and 1SMPH
Advisory SpHd F'laque IW13-1P( 1S))
~ • Install Yield 10 Pedestrians Sign (Rl -6)
'9 • Install Yield Here to Pedestrians Sign {Rl-5)
- • Install Yellow C1mterline (Detail 22)
(§} • Install 6" White Edge Line (Detail 278)
■■■■ •Install Spud Cushion per Exhibit J-2
0 •tr-.,satiStop&.,
Note: Refresh All Exi,ting Striping Not Conn1cling with Proposed lmprovemen\5
Not•: Trim and Maintain All Landscaping ta Ensure Adequate Sight Dislaoce
R1-1 WJ-1 W13-IP(1S) Rl-5 ., .. NoL11: Drawing not lo scal1 Exhibit 1-2
Conceptual Roadway Improvements (Segment 3)
La Plata Drive from Vista Plaza Drive to Via Larga NIGUEL HIU.5 NEIGHBORHOOD TRAFFIC CALMING STUDY I/CITY OF LAGUNA NIGUEL ///////////////// R I(_ !~8i~,~!ING/d/l///l/lll$#/H@/l@U/~I/IPl',m'J'A'Pl#IH.¢M'hMHH/$/.uJ.4'd/.bl/QII/.Ul#.UAf'l#QP.IM'##/hAWMW.IIAW.Wl/hW'/#/QI/Q'/#U/#llll'#h'/#//MIII/I..W##/#///#$NQ$U/l~U1#u//l/H4$~@$#/#4&H/$/l#R&//$/M/#$/~#/h///U/Q#m#&ffeH//////ll1 • lnsYU Stop S19n (R1· 1 I
.. lnsu,11 Stop Ahead Sign (W3-1 )
la • tnstillll ·sump" S1g n (W8,1)and lSMFH
Advisory Speed Plaque (W13-1F(1 SJ)
- .. Install Yellow Cenlerline (Dela ii 22)
•1111. ■ .. lnslall Spe11d Cushion per Exhibrt J-2
§I ,. Install Stop 811r
Note Sandblast AU Conn1cting Striping
Note Refresh All Exisling S1riping Not Conf11t11n9 with Proposed Improvements
Note: Trim and Mainlain All Landscaping to Ensure Ade(luale S19htD1slanc11
wa,
Note: Drawing not to IU!•
Exhibit 1-3
Conceptual Roadway Improvements (Segment 4)
La Plata Drive from Via Larga to Via Pan NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY /I CrTY OF LAGUNA NIGUEL t- .. Jnstall Stop S19n (R1 -1)
► -lm1a11·0ump· S,gn(W8-l)and 15 MPH
Advisory Speed F'laque(W13-1P(l5))
- • lnslall Yellow CenLerlone (Detail 22 )
1111 ■ • Install Speed Cush ion per E~hib1l J 2
@] • Install Stop Bar
Note: Sandbln1 All C0nfl1ctin9 Striping
Nole: Rerresh All E11.1st1n9 Str1pong Not Conn,ctmg with Proposed lmprovemen\s
Nole: Trim and Main1aon All Landscaping to Ensure Adeciuate S19hlD1s!.anc:e
[Jfil RH WB-1 Wl!-1Pp5)
Note: Drawing not to sc,le
Exhibit 1-4
Conceptual Roadway Improvements (Segment 5)
La Plata Drive from Via Pan to Via Portola NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // Cm' OF LAGUNA NIGUEl ZJIIH01)0I
111111111//111111 RI<; ~tg~~ififlNCp//l/$11/111111H..w11111111.v111111,w1.wr1.w11""1.,1£u//.11.wu.v1UtP..1111/#Pl#/HHH1/.1#1#1.V#1##/.11l1#11//11.d1..vH&H/H/1&M111M1A"U..WULtl'n".th'.tv/ll111111///1.m111hl'//1..W11.,.,1$hJ'H.i/111#.u...w1.1Mu#1#d11111q111m111H11$H/1111111~1~41Hb1~/11111111,.,111N111H11$u1 Legend
- • Install Yellow Centerline (Ceta~ 22)
Note: Sandblast All Conflicting Striping
Nole: Refresh All Existing S1rlplng Not Conflicting with Proposed Improvements
N0t11 : Trim and Maintain All Landscaping to Ensure Adequate Sight Distanca
Exhibit 1-5
Conceptual Roadway Improvements (Segment 7)
Via Portola from La Plata Drive to La Vida Drive NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL I m11-20u-01 //////////////// RI\ r'~t~1~C////l///l////l.d/./7//l////#/#////l#l'//,«,'//#///Q/I/IIW///II/Q//I///IIII/IIIII//H7//I//Ul/l//llh'//l'III/I/I/Uh'//MWHIV#n'/H/$//.H///ll//@'IUQ'/ll'/lll//,?'///(///l'//,?'////l//#///l/l//1,9'l//###IHAYA'/#AW/dh'/A'/ll#.,,W#h.)'.Ml/.@'/#l/l/.l./#H@°N(l/h$1.<VU4f'W/HH$Q~//l~~Hd@ Legend
~ •lnstallSl0pS19n{R1-1)
• lnstllllStcpAheadSign(W3-1)
- • Install Yellow Centerline (Deti,il 22)
§) • lnstallStopBar
Nc,le: Sandblast All Conflicting Striping
Nole Refresh All Eir.1 sling Striping Not Conll1cllng with Proposed lmprovemenls
Nole: Trim and Maintain All Landscaping lo Ensure Adequate S,ghtDislance
Note: Drawing net to scale
Exhibit 1-6
Conceptual Roadway Improvements (Segment 8)
Via Portola from La Vida Drive to Via De Anza r-- NIGUEL HILLS NEIGH!IORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL I I _ _ u,e.:iu11
//////////////// R I< : r~~ HC/Q///l// l/'Q.Q't,I////I//IUl/l/ll//l/('/Q/////Q/H.l"//Q///l/l#/ll/#l'Q////l/'/Hh'Hl/#//q'/QH/h'/l'//Q/##/#..Wl#hlh/MN/M?'#ll #//t¥#/#/.$'IH/llh//llA7,o/@114-"U4?//.-r,Q'.QM¥.~MI/H1#1~~/#~1$Qdu~1H1111m1~#uM/l~ IIUU/Ul////l~d$/~~11,#111u1 Legend
'9 • Install Stop Sign (R1-1)
ja • Install "Bump" Sign (W8-1) and 15 MPH
Adviso,ySpeed Plaque(W13-IP(IS))
- • Install Yellow Cen\erline (Detail 22)
a!I • Install Speed Cushion per Exhibit J.1
■■■8- Install SpHd Cushion per Exhibit J-2.

Note: Sandblast All Conflictmg Striping
Not•: Refruh All Existing Striping Not Connictmg wilh
Propond lmprovemenls
Nole: Trim ind Maintain All Landscaping lo Ensure Adequate SightDlstani::e
• a,., ~ Y,"1,1
W13-1P(15)
~
Nole: Draw-19 not IO "''-'
Exhibit 1-7
Conceptual Roadway Improvements (Segment 9)
La Vida Drive from Rue De Gaugin to Via Portola NIGUEL HIU.S NEIGHBORHOOD TRAFFIC CALMING STUD'!' /I CfTY OF LAGUNA NIGUEL &irCl•J:U.1141
///////1////IIIII RI< ~~~~NC~/ -:Wl/////.{-'/H.-W.I//.UHI/IHI//H/ll//d/lN.W//l'IIH/HH/4.VUl//,W/llll/l//////.$'U/UM'l///h'$/l.«W#&'#~..W.V.IU/IIU#//llh'l4WII.Vl#//l;M®"//l#//IH////I//Q'//l#l#///#///##/.U///.,W/./U.#/////.l//ll//,')'//$///U.l////////h'b/HYJ/.#////.l'l/l/. W,l,W#/////////l//#///ll//#AW#///// 25282
Legend
Iii • lnsL1111StopSign(R1-1)
► • lnst11 II "Bump• Sign (WB 1) and 15 MPH
Advisory Speed Plaque (Wl 3-1 P( 1 SJ)
- • Install Yellow Centerline (Detail 22)
■■ • Install Speed Cushion per Exhibit J-2.
~ •lnslallStopBar.

Nole: Sendbla:;;t All Con0ict1ng Striping
Note: R•frHh All E11: ist1ng Str.p1ng Nol Conn1cling with Propoled Improvements
252.92
25215
(3.1 % G~cle) ,
Nole Trim and Maintain All Landscaping lo Ensure Adequate S19hlDis\ance
Rl-1
Nole: Dr11win9 not lo scale
Exhibit 1-8
Conceptual Roadway Improvements (Segment 10)
Via De Anza from Via Portola to Los Osos Drive NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY //CITY OF LAGUNA NIGUEL t ZJlO-ZllllOt
/ll////l/ll//1/1 RI( t i:t..tNO q//HIH/l#.¥..YI..W//4"/N$/ll#l/#RHlHll.#'11a-111#//-WI/.W/li"1..WN/l#/NP-/,v/#1M11.v11,w-1...;v11;,w/$ll/#/h/1/h'/IIIIHI/////////Q/.Q///////$//////////l#/II.WH.V#/ll#///bl/////l//#//l/l//lh//hl/.tVl/.////#l/l#Hll@/H$II///HD/d/.//lllHH1111111111H1111u1/11/u111111n)11H1m ,. • lri11all"9ump·S,gn(W8•1)and lSMPH
Adviwry Speed Plaque (W13-1P(1S)I
- • lnslall YellowCenlerline (Detail 22}
1£] • lrisla11Stop8ar.

Note; Sandblast Al\ Conflicting Stnp,ng
Not• Reiresh AH Ex1!".ting su,pirig Not CoriOictmg wllh Proposed Improvements.

Note: Trim ,11nd Maintain All Landsupirig to Ensure
AdeQuale Sight Distance
YJIJ0 1pt1.$1
Nol e: Draw,ng not to s.ca1e
Exhibit 1-9
Conceptual Roadway Improvements (Segment 11)
Via De Anza from Los Osos Drive to Palo Drive NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING S'TUDY // CITY OF LAGUNA NIGU~L ,1,0.nno,
#//1'.Q/MV/#P RI< !~~JNC.,q//////////////,'//////l/l#lllh'I.I/IH/#/ll//lll///l//l/#/l///#/ll#/l/l/$/////,¼'$//#l#IIII/IIII//I/I/H/l/////;',Q//.f.U/.l'/l/)')//l/l//.l.l/.l/)///l/.l'//))///)/Q///.W/.l¼W"#/M'HIIH//IH/////,W,Q//$//Q//.t,,'//Q//////l,W//I/Ql////ll/////ffe$///#////l/##l///b/$////#.l//#ffe/~l/$#///l/l#//Q/#U • Install Stop Sign (R1-1)
- lnstall·Bump·Sign(W6-1)and 15MPH
Advisory Spud Plaque (Wl 3- lP( 1 S))
ja .. !nslall Yield Lo Pedewians Sign (Rl-6}
la • Install Yield Here to Pedestrians Sign (Rl-5)
- - lnslall Yellow Centerline (Detail 22)
666 - lnsLallY1eld Linv
Note: Refresh All E11ist1n9 Str~1ng Not Connicting wrth Proposed Improvements
Nole: Trim and Ma,nuun All Landscaping lo Ensure Adequate Sigh!Drl.:ll'ICL
Rl-1 W13-1PPS) Rl ,5
Note Drawing not to scale
Exhibit 1-10
Conceptual Roadway Improvements (Segment 14)
Vista Plaza Drive from La Plata Drive to Calle Vieja NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY II CITY OF LAGUNA NIGUEL f J 2l11HOU-OI ///////////////// 81~.i e~l~iJrlNC_d/////,Q///..¥#$/.Wl///,W///#///h/QQ/h/l/hl//l'IW/#(l&(IQ/I/QI////U/#/IH/#IQ//l//////l#IQIIII/I//I//.Q//M/#//QU/l'l////#llliYl)h'/H&IHl.«iW#l##..Wl'/#/l///#l//#I///Q////I..W///,l/.b///#///##/#./l/#/IRAY///l//#l/.l#IJ"/Q//d///////ll///////////11d)&//bl//d///H///////H/////III Legend
- Install Stop Ahead S,gn (W3-1)
ti •lnstall "Bump"S1gn(WB-l)and 15MPH
Advisory Speed Plaque {W13-1 P( 1 5))
- - Install Yellow Centerline (Det11il 22)
■■■■ • Install Speed Cu1ohion per bh,bit J-2
Nole: Sandblast All Conn,cting Str,p,ng
Nole: Refresh All Existing Striping Nol Conrl1cling wr1.h Proposed lmprovemenls
Note: Trim and Maintain All Landscaping to Ensure Adequate SightD,stance
Exhibit 1-11
Conceptual Roadway Improvements (Segment 1 S)
Vista Plaza Drive from Calle Vieja to La Plata Drive NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY II CITY OF LAGUNA NIGUEL ///////////////// RI< ~~a'l~iJflNC /////////l/,?#AW//M//U/A'U/QH//l,6'/,#//Mm'QI.H'b/##l/.,Q/;W////#/HUUIQ//IQ/#Q/#QU.Wl#/ll//#//~$/Qd/lQ'/QMYIN/#.Q/&W,¥$/IHllf"IIIQ///Q//////I/I///II.W#..Wi<Q#l//l#'/'/llll'll'#/ll'Ql'/zy11 ~#/IHl////l/$/ll##lll#~$/l//ll/l$/#l####//~/## ;;/;;;///IIII ist
• Install Stop Sign (R l-1 )
• Install Slop Ahead Sign (Wl-1)
~ •lnstall "Bump"Srgn(WB-1)and 15MPH
Adv,sory Speed Plaque (W13- 1P{1S))
- • Install Yellow Centerline (Detail 22 )
I! ■■ • ln~lall Speed Cushion per Exhib11 J 2
@] - lnst111IIS1op Bsr
Note: SandblHt All Confl1ct1ng Striping
Note Refresh All fai\ting Striping Nol Confl1c:lin9 with Propc1.ad lmpro"emenls
Not•: Trim and Mairilain All L;mdscaping 10 Ensure Adequate S1ghtDislance
WS- 1
Note: Drawrog not to ~
Exhibit 1-12
Conceptual Roadway Improvements (Segment 16)
Vista Plaza Drive from La Plata Drive to Via Piedra Blanca/La Estrada Drive NIGUEL HIUS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY Of LAGUNA NIGUEL • lnstal\SlopSign(Rl-1)
.. lnstal l SLopAheadS1gn{W3 -1)
► - Install "Bump" S,gn (WB-1) and 15 MPH
Adv isory Sp11ed Plaque {W 13. 1 P( 1 SJ)
- • Install Y11 llow Centerline (Detail 22)
111111 • lnstall Spe11 d Cushion per Exhibit J-2
~ • lnstallSlopBar
Note Sandblasl All Conrl1cting Striping
Note R11fresh All Ex 1st 1ng Striping N01 C0nn1e1,ng w~h Proposed Improvements
Note: Trim and Maintain All Lands,:ap1n9 10 Ensure Adequale S1ghl Distance
R •1 W3-1
Note: Drillw1ng no t Lo scale
Exhibit 1-13
Conceptual Roadway Improvements (Segment 17)
Via Large from La Plata Drive to La Plata Drive N~UEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL , , Ut0-20D.l;l1
//////////AW/// RI{ !t80~fr~l1NGQ//.(.V//#b'//H//M:W///.l/hh'.WU/////I/.I..W..V/.I////H//l////lll#/I/IIIIIIH//I/MWt.l#/~llil/U#.l##INQINJV.1Wlll,Um.¼WI/Q.l///d///lll/,V,,W//I/.III/U/#M&!ll///#//llllllll,W///.lll1(~///ll/l/l/ld////.l/////l/l#i'.I.IIH//I///.Q/•'1Wl//////l.l.///.l.l/.l.l//1//.I///U/III////II/H)1/H/l////1,1u//H//IIII.I.I// Legend
'9 • Install Stop Sign (R1-1)
• Install Stop Ahead Sign (W3-1)
'9 •lnstall"Bump"Sign(WB-1)and 1SMPH
Advisory Speed Plaque (Wl 3-1?11 S))
- • Install Yellow Centerline [Detail 22)
•■■■ • lnslal1 Speed Cushion per Exhibit J-2
~ - Install Stop Bar
Note: Sandblast All Conrlicting Striping
Note: Refresh All E,cisting Striping Not Connicting with Proposed Improvements
Neita; Trim and Maintain All Landscaping lo Ensure Adequ11te Sight Distance
R1-1 W3-1
~ W8-1 W13-1P(15l
Exhibit 1-14
Conceptual Roadway Improvements (Segment 20)
Via Piedra Blanca from Los Osos Drive to Via De Anza NIGUEL HIU.S NEIGH80RHOOO TRAFFIC CALMING STUDY I/CITY Of LAGVNA NIGUEL 8" WHITE STRIPE (TYP.)
Notes:
(1 .) Speed Cushion Specs:
¾" W 2¾" 3"

0.:
~ w
u
<(
LL
OJ
Cl:
::)
u
1 ~ f- 3'-6" -1
f- 7'-0'' ---- 1

SECTION A-A

RATIO GRADIENTS
WITH 3" HEIGHT AT CENTER
(APPROXIMATE 7% GRADIENT)

SPEED CUSHIONS TO BE
ASPHALT, NOT RUBBERIZED.
* NOT TO SCALE
* NOT FOR CONSTRUCTION
6'(TYP.) 1-- - I
50'
100' Minimum
WS-1 (BUMP);
W13-1P(15 MPH)
Exhibit J-1
Speed Cushion Detail
30-Foot Wide Street

NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL 231 0-2023-01 ///////////////// RI< ~~8~~~~r•NG////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 8" WHITE STRIPE (TYP.)
Notes:
a.:
~ UJ
u
<l:
u..

Cl'.l
0:::
::::,
u
(1.) Speed Cushion Specs:
~
¾· 1~· 2¾" 3•
I ~ 3'-6' -:1
1-7'-0"

SECTION A-A

RATIO GRADIENTS
WITH 3" HEIGHT AT CENTER
(APPROXIMATE 7% GRADIENT)

SPEED CUSHIONS TO BE
ASPHALT, NOT RUBBERIZED.
* NOT TO SCALE
* NOT FOR CONSTRUCTION
6'(TYP.) 1-- - I
50'
100' Minimum
W8-1 (BUMP);
W13-1P(15 MPH)
Exhibit J-2
Speed Cushion Detail
36-Foot / 40-Foot Wide Street

NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING STUDY // CITY OF LAGUNA NIGUEL 2310-2023-01
W////////////// RI< I ~~g~~~~flNC////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RK20400 // 2310-2023-01 9-1
9 .0 Conclusions and Next Steps

9.1 Conclusions
The findings of this report confirm the residents' concerns that the community is experiencing excessive vehicle speeds. The data collected indicates that speeding is an issue affecting the safety and quality of life in the Niguel Hills neighborhood.

To effectively address this problem, this report provides a comprehensive traffic calming plan that includes the installation of 14 speed humps strategically placed throughout the community. Speed humps have been proven to reduce vehicle speeds and enhance pedestrian safety, making them a crucial component of our traffic management strategy.

9.2 Next Steps
The next critical step is to conduct a community-wide vote to approve the installation of speed humps.

According to the Laguna Niguel Residential Traffic Management Policy, this measure requires a 67% majority vote to pass. All residents should participate in this vote to ensure that the decision reflects the community's collective will.
rkengineer.com
liNGINliliRING
GROUP INC.

Appendices
Appendix A
Resident Feedback Log & Traffic Calming Survey
Gty of Laguna Niguel
Page2
FORUM
Town H.all Meeting 1 (2.8 24)
Email
Phone
TOTAL

PERCENTAGE OF TOTAL
Appendix A
Resident Feedback and Areas of Concern
Cl ~ .. TOTAL QJT- lWllC kiGlt .,_ COMMENTS THROUGH alk1RQI. "TAA,111~ 1/0LUM~ Dl!i!ANCE 155 24 13 19
20 10 4
1B5 61 16 12 21 14 21
100't, 33'1, ... 6'I, 15'11, '"' 11'11,

RESIDENT FEEDBACK AND AREAS OF CONCERN
SCHOOL
PICK-UP/DROP-OFF 2%
PEDESTRIANS 6%
BICYCLES 6%
SIGHT
DISTANCE 11%
HIGH
TRAFFIC VOLUMES B%

TRAFFIC
CONTROL 15%
OTHER4%
CUTTHROUGH 7%
* rn P!,DESTlUANS SOiOOl • PICIUJP,tlROP-011'
10 12 10
... ... 2'11, 4'11,
SPEEDING 33%
COU\SIONS 9%

NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING SURVEY
The City of Laguna Niguel is preparing a traffic study fm the Niguel Hills neighbo1·hood to identify effective traffic calming options for consideration. Traffic calming is the management of vehicular and pedestrian traffic to minimize negative impacts on neighborhoods and schools.

The following traffic calming options are being considered for the Niguel Hills neighborhood based on resident feedback, a review of the study area, traffic data collected, and local and state guidelines.

Speed Humps
• Effectively slow down vehicles, especially in residential areas and near schools or playgrounds.
• Slower speeds allow drivers more time to react to pedestrians crossing the road. • Can reduce the number of traffic collisions, particularly those involving excessive speed.
• Serve as a visual and physical reminder to drivers that they are entering a slower-speed area. Encourages drivers to be more attentive and cautious. • Cannot be installed on roadways exceeding an eight percent (8%) grade. • Must be spaced at least 250 feet apart and must be out of the influence area of driveways.

Roadway Striping
• Have shown to reduce vehicle speeds up to 5 mph in residential communities. • Narrower lanes give drivers the perception of a more constrained space, encouraging them to slow down. Drivers tend to drive more cautiously when they feel there is less room for error.
• Visually reduces the width of the driving lane, making it appear more restricted.

This prompts drivers to reduce their speed to maintain control and avoid drifting into other lanes or onto the shoulder.
• May also improve sight distance by channeling vehicles towards the center of the road and away from the side of the road.

Roadway Signs
• Signs help drivers anticipate what to expect on the road, making it easier to understand and follow traffic rules.
• When signs are standardized in design, placement, and messaging, drivers can quickly recognize and comprehend the information.
• Consistent and visible signage throughout the community makes drivers more accountable for adhering to the posted regulations.

Raised Medians
• Physically narrow the travel lanes, encouraging drivers to reduce their speed. • The narrowed roadway and reduced speeds can improve pedestrian safety.

PLEASE COMPLETE THE SURVEY ON THE BACK SIDE OF THIS PAGE

NIGUEL HILLS NEIGHBORHOOD TRAFFIC CALMING SURVEY
Your input is vital. Please take a few minutes to complete this short survey and share your thoughts. The traffic calming device{s) selected will be further evaluated for applicability based on engineering evaluation and police and fire review.

1. Name (required): _________________ _ __________ _

2. Home Address (for tracking 1 response per household): ________________ _

3. Email Address (required): ________________________ _

4. Which traffic calming devices would you like to see in your community? Yes
©
Speed Humps 0
Roadway Striping (e.g. lane 0 narrowing, centerline striping, edge line striping, etc.)
Roadway Signs (e.g. speed
limit signs, warning signs) 0
Raised Medians 0
Prohibit Left Turns 0 into and out of neighborhood at
Golden Lantern/Via De Anza
For additional comments, questions, or concerns, contact the City at:

Email: trafficstudy@cityoflagu nan iguel.org
Phone: 949.315.0127
No
@
0 0
0 0
0 THANK )IOU FOR YOUR PA RT/Cf PAT/ON
Appendix B
Traffic Conditions Forms
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number:

Roadway Segment: La Plata Drive
From: Crown Valley Parkway to Via Valverde
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.1 miles
64'
2 lanes, Undivided
Painted
Limited
25 Residential
Frequent
Yes
Yes
Weekday: 2,416 Saturday: 1,889
At Crown Valley & li! Plata
No
Yes
No
No

8.6%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed . 2 MVMT = Million Vehicles Miles of Travel Prepared By: SA
Reviewed By:

Date:

RK
12/17/2024
Speed Characteristic.s 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

CoUision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Tota I Collision Rate per MVMT2:

Caltrans Collision Rate:
34 29
29 5-54
25-34
75%
25 01/2019 - 12/2023
60 0
0 r:'T""2 engineering LU.U group, Inc. rkengineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 2
Roadway Segment: La Plata Drive
From: Via Valverde to Vista Plaza Drive
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Ho rizo nta I Curves:

School Speed Zones:

Average Grade
Other:
0JJ6
64'
2 lanes, Undivided
Painted
Limited
25 Residential
Frequent
Yes
Yes
Weekday: 2,206Saturday: 1,727
At la Plata & Vista Plaza Drive
No
Yes
No
No
86%
1 Speed characteristics shown are from the weekday with the maximum 85Lh percentile speed 2 MVMT = Million Vehicles Miles of Travel
Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
35 30
29 5-49
25-34
70%
25 01/2019-12/2023
60 a
a
---- engineering --.. group, inc. rke119i11eer cnrn
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 3
Roadway Segment: la Plata Drive
From: Vista Plaza Drive to Via Larga
Street View
Roadway Characteristics:

Length of Segment:

Roadw ay Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade
Other:

0.09 4()
2 lanes, Undivided
Painted
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 1, 121 Saturday: 944
No
No
Yes
Yes
No

4.8%
1 Speed characteristics shown are from the weekday with the maximum 851 h percentile speed .
2 MVMT = Million Vehicles Miles of Travel
Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 1 0 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
33 25
26 5.49
25-34
52%
25 01/2019 • 12/2023
60 0
9 78

1.68 ,_.,.., engineering
group, inc.
rkeng1nerr crirn
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction:

Roadway Number:

Roadway Segment:

From:

City of Laguna Niguel
4 La Plata Drive
Via Larga to Via Pan
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two•Way Daily Traffic Volume (ADn:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.08 miles
40'
2 lanes, Undivided
Painted
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 871 Saturday: 718
No
No
Yes
No
No
40%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed , 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
34 27
28 544
25·34
57%
25 01/2019 • 12/2023
60 r:T'7"2
~
enoineering
group, Inc.
rken9I11eer cnm
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number:

Roadway Segment: La Plata Drive
From: Via Pan to Via Cebolla
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.05 miles
40'
2 lanes, Undivided
Painted
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 812 Saturday: 699
No
No
Yes
No
No

5.8%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Coll1sion History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
32 26
26 5-44
25-34
64%
25 01 /2019 - 12/2023
60 ~
~
engineering
group, inc.
rkengineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 6
Roadway Segment: La Plata Drive
From: Via Portola to Via Larga
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.08 miles
40'
2 lanes, Undivided
No Median
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 228 Saturday: 193
No
No
Yes
Yes
No
1 Speed characteristics shown are from the weekday with the maximum 851 h percentile speed. 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it
Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Ca ltrans Collision Rate:
24 18
18 5-29
15-24
59%
25 01/2019 - 12/2023
60 0
r:Tn engineering L.U.U group, Inc.
rkengineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number:

Roadway Segment: Via Portola
From: La Plata Drive to La Vida
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.08miles
4CY
2 lanes, Undivided
No Median
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 739 Saturday: 553
No
No
Yes
No
No
9,8%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed . 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Charac1eristics1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
34 27
27 5-54
25-34
53%
25 01 /2019-12/2023
60 0
0 ~
~
engineering
group, Inc.
rkengineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguno Niguel
Roadway Number: 8
Roadway Segment: Via Portola
From: La Vida to Via De Anza
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:
0,12miles
40'
2 lanes, Undivided
Painted at Via De Anza
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 803 Saturday: 636
No
No
Yes
No
No

12.4%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed , 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision Histo[Y:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
33 27
27 5-59
20-29
61%
25 01/2019-12/2023
60 0
~
~ engineering
group, Inc.
rkengineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 9
Roadway Segment: La Vida
From: Rue De Gauguin to Via Portola
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.47 miles
West - 36'; East - 30'
2 lanes, Undivided
No Median
limited
25 Residential
Frequent
Eastbound - No; Westbound - Yes
Yes
Weekday: 139 Saturday: 131
No
No
No
Yes
No

5.3%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed. 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
27 22
21 5-49
15-24
61%
25 01/2019 - 12/2023
60 ~ enoineering L.U.U group, Inc.
rkengIneer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 10
Roadway Segment: Via DeAnza
From: Via Bajo Cerro to Los Osos Drive
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADTI:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.21 miles
40'
2 lanes, Undivided
Painted at Intersections
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 616 Saturday: 546
No
No
No
Yes
No
3,1%
All Way Stop at Los Osos Drive
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed. 1 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Charact.eristic:s':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

Collision History;
Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
29 24
23 5-39
20-29
70%
25 01/2019 - 12/2023
60 0

4.45 1,68
~ engineering L.U.U grouo, Inc.
rkengineer.corn
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 11
Roadway Segment: Via DeAnza
From: Los Osos Drive to Palo Drive
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.1 miles
40 2 lanes, Undivided
Painted at Intersections
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 941 Saturday: 950
No
No
No
Yes
No

1.6%
All Way Stop at Los Osos Drive
1 Speed characteristics shown are from the weekday with the maximum 85111 percentile speed. ' MVMT = Million Vehicles Miles of Travel
Prepared By: Sabrina Ayala
Reviewed By: RK
Date: 12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT':

Caltrans Collision Rate:
28 23
22 5.39
20-29
70%
25 01/2019 • 12/2023
60 0
5 14.18

1.68 r:,-n engineering
l.,Uj.] group, inc.
rkengineer.com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction:

Roadway Number:

Roadway Segment:

From:

City of Laguna Niguel
12 Via San Sebastian
South of Calle Vieja
Street View
Roadway Characteristics:
length of Segment:

Roadway Width:
lane Configuration:

Median Type:

On Street Parking:

Speed limit (mph):

Adjacent land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Q_18 miles
36'
2 lanes, Undivided
Painted at Knuckle
Limited
2S
Residential
Frequent
Yes
Yes
Weekday: 235 Saturday: 125
No
No
No
No
No

4.3%
Other: Pedestrian Access Paths to School & La Plata
1 Speed characteristics shown are from the weekday with the maximum 851 h percentile speed.
2 MVMT = Million Vehicles Miles of Travel
Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds {mph):
10 MPH Pace Speed {mph):

Percent in 10 MPH Pace:

Posted Speed limit
Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
23 18
18 5.34
1S-24
69%
25 01/2019 • 12/2023
60 0
r-:Tn enoim:ering L.U.U grouo. Inc. rk~ngineer corn
Jurisdiction.

Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
City of Laguna Niguel
Prepared By: Sabrina Ayala
Roadway Number:

Roadway Segment:
13 Calle Vieja
From: Via San Sebastian to Via Valverde
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions,
Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

0.05 miles
34'
2 lanes, Undivided
Painted at Knuckle
Northbound - Yes; Southbound - No
25 Residential
Frequent
Northbound • Yes; Southbound - No
Yes
Weekday: 424 Saturday: 218
No
No
Yes
No
No

12.8%
Other: Pedestrian Access Path to School At Knuckle
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed ' MVMT = Million Vehicles Miles of Travel
Reviewed By:

Date: 12/17/2024
Speed Characteristics 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT':

Caltrans Collision Rate:
17 13
12 5-24
15-24
38%
25 01/2019 - 12/2023
60 0
~ engineering i..u.u group, inc.
rkengineer r:nrn
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 14
Roadway Segment: Vista Plaza Drive
From: La Plata Drive to Calle Vieja
Street View
Roadway Characteristics:
length of Segment:

Roadway Width:
lane Configuration:

Median Type:

On Street Parking:

Speed limit (mph):

Adjacent land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:
018miles
40'
2 lanes, Undivided
Painted at Calle Vieja
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 1,090 Saturday: 787
Yes - At la Plata Drive & Calle Vieja
No
Yes
Yes
No
84%
All Way Stop at Calle Vieja
1 Speed characteristics shown are from the weekday with the maximum 851 h percentile speed 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristic,s 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
34 29
28 5-54
25-34
66%
25 01/2019 - 12/2023
60 0
0 ~ engineering L.U.U group, Inc.
rke11gi11eer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 15
Roadway Segment: Vista Plaza Drive
From: Calle Vieja to La Plata Drive
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street illumination:

Two-Way Daily Traffic Volume (Aon:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.17 miles
40'
2 lanes, Undivided
Painted at Calle Vieja
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 548 Saturday: 446
Yes• At Calle Vieja
No
Yes
Yes
No
1,5%
All Way Stop at Calle Vieja
1 Speed characteristics shown are from the weekday with the maximum 851h percentile speed 2 MVMT = Million Vehicles Miles of Travel
Prepared By: Sabrina Ayala
RK
12/17/2024
Reviewed By:

Date:

Speed Characteristics 1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
29 25
25 5-39
20-29
79%
25 01/2019 • 12/2023
60 0
0 engineering
group,lnc.
rkengineer cn111
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Lllguna Niguel
Roadway Number: 16
Roadway Segment: Vista Plaza Drive
From: La Plata Drive to Via Piedra Blanca
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADD:

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.14milii:!s
40'
2 lanes, Undivided
Painted at Via Piedra Blanca
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 520 Saturday: 424
No
No
Yes
Yes
No

4.3%
1 Speed characteristic.s shown are from the weekday with the maximum 851 h percentile speed
2 MVMT = Million Vehicles Miles of Travel
Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics1:
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
32 27
27 5-44
25-34
65%
25 01/2019-12/2023
60 0
0 1-:Tn engineering L.U.lt.l group, inc.
rkeng,neer cnm
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 17
Roadway Segment: Via Larga
From: La Plata Drive to La Plata Drive
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit {mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume {ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.3 miles
36'
2 lanes, Undivided
No Median
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 172 Saturday: 150
No
No
Yes
Yes
No

4.6%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed. 2 MVMT = Million Vehides Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed {mph):
50th Percentile Speed {mph):

Range of Speeds {mph):
10 MPH Pace Speed {mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
29 24
23 5-39
20-29
66%
25 01/2019-12/2023
60 0
,-:,on engineering &.U.U group, inc. rke119ineer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 18
Roadway Segment: La Esb'ada Drive
From: Via Piedra Roja to Los Osos Drive
Street View
Roadway Characteristics:

Length of Segment: 0.2 miles
Roadway Width: 36'
Lane Configuration: 2 lanes, Undivided
Median Type: Painted at Via Piedra Roja Intersection
On Street Parking: Yes
Speed Limit (mph): 25
Adjacent Land Uses: Residential
Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

Frequent
Yes
Yes
Weekday: 275 Saturday: 246
No
No
Yes
Yes
No

8.4%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed 1 MVMT = Million Vehicles Miles of Travel
Prepared By: Sabrina Ayala
RK
12/17/2024
Reviewed By:

Date:

Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
27 21
21 5-39
15-24
68%
25 01/2019- 12/2023
60 0
0 r:T'r2
~
enoineerinu
group, inc.

Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of i...guna Niguel
Roadway Number: 19
Roadway Segment: Via Piedra Blanca
From: Vista Plaza Drive to Los Osos Drive
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewa !ks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:

0.24 miles
36 2 lanes, Undivided
Painted at Vista Plaza Drive
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 425 Saturday: 349
No
No
Yes
Yes
No

8.8%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed. 2 MVMT = Million Vehicles Miles of Travel Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics':
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Lim it:

Collision History;
Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
26 21
21 5-34
15-24
70%
25 01/2019 - 12/2023
60 0
0 r-:,-r:a enoineerinu
I.U.U group, inc.
rkeng111eer com
Niguel Hills Neighborhood Traffic Study
Speed Study Traffic Conditions Form
Jurisdiction: City of Laguna Niguel
Roadway Number: 20
Roadway Segment: Via Piedra Blanca
From: Los Osos Drive to Via Alto Cerro
Street View
Roadway Characteristics:

Length of Segment:

Roadway Width:

Lane Configuration:

Median Type:

On Street Parking:

Speed Limit (mph):

Adjacent Land Uses:

Frequency of Driveways:

Sidewalks Present:

Street Illumination:

Two-Way Daily Traffic Volume (ADT):

Other Special Conditions:

Crosswalk:

School Crosswalk:

Vertical Curves:

Horizontal Curves:

School Speed Zones:

Average Grade:

Other:
0 OS miles
36'
2 lanes, Undivided
No Median
Yes
25 Residential
Frequent
Yes
Yes
Weekday: 441 Saturday: 353
No
No
Yes
Yes
No

1.6%
1 Speed characteristics shown are from the weekday with the maximum 85th percentile speed,. 1 MVMT = Million Vehicles Miles of Travel
Prepared By:

Reviewed By:

Date:

Sabrina Ayala
RK
12/17/2024
Speed Characteristics 1 :
85th percentile Speed (mph):

Average Speed (mph):
50th Percentile Speed (mph):

Range of Speeds (mph):
10 MPH Pace Speed (mph):

Percent in 10 MPH Pace:

Posted Speed Limit:

Collision History:

Dates Observed:

Number of Months:

Speed Realted Collisions:

Total Number of Collisions:

Total Collision Rate per MVMT2:

Caltrans Collision Rate:
30 25
24 5-44
20-29
67%
25 01/2019-12/2023
60 0
r"':"TT'2
~
engineering
group, inc.
rkengineer com
Appendix C
Traffic Collision Records
01/0112019 thru 12/31/2019
Include State Highways cases
Tola/ Count: 256 Jurisdiction(s); Orange County
Report Run On: 03/1012021
"nmo,y Rd GOLDEN LANTERN Distance (ff) 129. Di rec/ion S Secondary Rd SAINT NC/C 3000 Slate Hwy? N Route Postmile Preffx Postm1/e ~-IY Laguna Niguel County Orange Population 5 Rpt Dist 951J7 Beat 743 Type 0 Ca!Trans Badge 9696 Collision Date 20190914 Primary Collision Factor IMPROPTURN Violation 22107 Collision Type HIT OBJECT Severity PDO #Killed O #Injured O Tow Away? N Weat11•t1 CLEAR Wea ther2 Rdwy Surface DRY Rdwy Condi NO UNUSL CND Rdwy Cond2 Spec Cond 0 Side of Hwy
Time 1945 Day SAT
Process Data 20191003
~11 and Run MSDMNR Mo/or Vehicle Involved With FIXED OBJ Lloh/JllO DARK· ST Ped Action Cntrl Dav FNCTNG Loe Type Ramp/Int Party Info I VIC/m> Info
PMy Type Age $ex Race Sobriety! $obriety2 Move Pre Dir SW Veh CHP Veh Make Year SP Info OAF! Viol OAF2 Safety Equipj ROLE EKf OI lnj AGE Sex Sea/ Pos Safety EQUIP 1F DRVR 998 HBD-UI RAN OFF RD N 9900 3 N - B - I
Primary Rd GOLDEN LANTERN Distance /ff) 0.00 Direction Secondary Rd SERENITY LN NCIC 3000 State Hwy? N Route Pas/mile Prefix Postmile Side of Hwy ICily Laguna Niguel County Orange Population 5 Rpt Dist 95IJ6 Beat 743 Type 0 Ca/Trans Badge 5163 Collision Date 20190404 Time 1436 Day THU 'Pn'mary Collision Factor R-O-WAUTO Violation 21801A Collision Type HEAD-ON Seven·ty INJURY #Killed 0 #Injured 2 Tow Away? y Process Date 20190610 !Weather! CLEAR Weather2 Rdwy Surface DRY Rdwy Condi NO UNUSL CND Rdwy Cond2 Spec Cond 0 IY1t and Run Mo/or Vehicle Involved With OTHER MV Uqht1ng DAYLIGHT Ped Action Cntrl Dev NT PRSIFCTR Loe T voe Ramp/Int Party Info
OAF2 Safely EquiJ
V1c/1m Info
IPa,ty Type Age Sex Race $obnety1 Sobdety2 Move Pre Dir SWVeh CHP Veh Make Year $Pinto OAF! Viof ROLE Ext 01/nj AGE Sex 1F DRVR 54 F A HNBD LFT TURN s A 0100 HONDA2019 3 N L G DRVR OTHVIS 54 F 2 DRVR 44 F w HNBD PROC ST N A 0100 TOYOT2014 3 N L G DRVR COMP PN 44 F >"rimary Rd GOLDEN LANTERN Distance (ff) 0,00 Direction Secondary Rd ST CHRISTOPHER NCIC 3000 Slate Hwy? N Route Postmife Prefix Postmife 1r,ty Laguna Niguel County Orange Population 5 Rpl Dist 952A6 Beat 741 Type O Ca/Trans Badge 5377 Collision Date 20190819 Pn'mary Collision Factor UNKNOWN Violation Collision Type BROADSIDE Seventy INJURY #Killed 0 #Injured 2 Tow Away? Y Wea/her! CLEAR Weafher2 Rdwy Surface DRY Rdwy Condi NO UNUSL CND Rdwy Cond2 Spec Cond 0 1'111 and Run Motor Vehicle Involved WilhOTHER MV l,ghf/na DAYLIGHT Ped Action Cnlrl Dev FNCTNG Loe Tv"" Seat Pos Safety EQUIP
1 0 L
1 0 L
Side of Hwy
Time 1245 Day MON
Process Date 20190924
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Pa/Ty Type Age Sex Race Sobnety1 Sobriety2 Move Pre D,r SW Veh CHP Veh Make Year SP Info OAF! Viol OAF2 Sul<'.lyEqulp_ ROLE Ext Of /nj AGE 1 DRVR 27 M W HNBD PROC ST N A 0100 HONDA 2006 3 N L H DRVR SEVERE 27 2 DRVR 70 F W HNBD PROC ST W A 0100 AUDI 2018 3 N L G DRVR 0TH VIS 70 Sex
M
F
Primary Rd GOLDEN LANTERN Distance (ff) 0.00 Direction Secondary Rd SWEET MEADOW NCIC 3000 State Hwy? N Roule Posfmile Preflx Postmile ,ty Laguna Niguel County Orange Population 5 Rpt Dist 951J5 Beat 741 Type O Ca/Trans Badge 5013 Collision Date 20190830 Primary Collision Fae/or STOP SGNISIG Violation 21453A Collision Type BROADSIDE Seventy PDQ #Killed O #Injured O Tow Away? Y Wea/her/ CLEAR Wea/her2 Rdwy Surface DRY Rdwy Condi NO UNUSL CND Rdwy Cond2 Spec Cond 0 Hit and Run Motor Vehicle Involved WilhOTHER MV t.,gnt111g DAYLIGHT P"'1Ac11on Cntrl Dev FNCTNG Loe Tvo.

Seat Pos Safety EQUIP
1 0 L
1 0 L
Side of Hwy
Time 1214 Day FRI
Process Date 20200131
PMy lllfo I Vamlnfo 0 arty Type Age Sex Race Sobnety1 Sobriety2 Move Pre Dir SW Veh CHP Veh Make Year SP Info OAF/ Viol 0AF2 SIJ/olyEqu1_q ROLE Ext Of lnJ AGE Sex 1F DRVR 33 M H HNBD PROC ST N A 0100 CHEVR 2013 3 N LL GG I 2 DRVR 42 M B HNBD LFT TURN S A 0100 HONDA 2015 3 N "rimary Rd GOLDEN LANTERN Distance (ff) 0.00 Direclion Secondar; Rd VIA DEANZA NCIC 3000 State Hwy_? N Route Postmile Prefix Postmile ity Laguna Niguel County Orange Population 5 Rp_t Dist 915J3 Beat 741 T)\ e O Ca/Trans Badge 5013 Collision Date 20190222 "rimary Collision Factor STRTNGIBCKNG Violation 22106 Collision Tx e OTHER Severity PDQ #Killed 0 #Injured 0 Tow Away:? N iNeather1 CLEAR Weather2 Rdwy Surface DRY Pct-,!' Condi NO UNUSL CND Rdwy Cond2 Spec Cond 0 >!it and Run MSDMNR Motor Vehicle Involved WithOTHER MV /..Jghtino DARK· ST Ped Acl1on Cn/rl Dev FNCTNG Loe Type Sear Pos Safely EQUIP
Side of Hwy
Time 1935 Day FRI
Process Date 20190313
Ramo/Inf
P.orty ln!o
SWVeh
A
Victim Info
:,~,, Type ge Sex Race Sobriety_ Sobn·e012
1F DRVR 998 IMP UNK IMP UNK
2 DRVR 67 F W HNBD
Move Pre
PROCST
PROCST
;
s
s A
CHP Veh Make Yea SP Info OAF1 Viol OAF2 ROLE Ext O In AGE Sex Seat Pos Safely EQU/ 0100 TOY OT 2013 3 N
0700 LEXUS 2015 3 N

Page 32 ends

Laguna Niguel City CouncilMay 6, 2025

Laguna Niguel City Council
May 6, 2025