Attach 3 - Kimley Horn Hercules Speed Survey Final Report_January 2025

ENGINEERING AND TRAFFIC SURVEY FOR SPEED
LIMITS
Final Report
January 9th, 2025
Prepared for:

Prepared by:

CERTIFICATION
I, Clara Ho, do hereby certify that this Engineering and Traffic Survey for the City of Hercules was performed under my supervision. I certify that I am experienced in performing surveys of this type and duly registered in the State of California as a professional Civil Engineer.
_______________________
Clara Ho
RCE# 90344
Exp. 09/30/2025
City of Hercules January 2025
Engineering and Traffic Survey for Speed Limits i

TABLE OF CONTENTS

1.0 Introduction ................................................................................................................. 1

1.1 Regulations and Guidelines ............................................................................................................... 1

1.2 Requirements and Methodology of an Engineering and Traffic Study .......................................... 5

2.0 Speed Survey Evaluation............................................................................................ 6

2.1 Field Review ....................................................................................................................................... 7

2.2 Statistical Analysis Factors ................................................................................................................. 8

2.3 2014 California MUTCD and CVC Guidance ..................................................................................... 9

2.4 Collision History ............................................................................................................................... 10

3.0 Results And Recommendations .............................................................................. 11 List of Tables
Table 1: Survey Locations and Limits Evaluated by Kimley-Horn...................................................................................... 6 Table 2: 2022 California State Highways Collision Rates ................................................................................................... 10 Table 3: Speed Survey Recommendations .............................................................................................................................. 12 City of Hercules January 2025
Engineering and Traffic Survey for Speed Limits Page 1

1.0 INTRODUCTION
This Engineering and Traffic Survey is intended to serve as the basis for the establishment and enforcement of speed limits for selected streets within the City of Hercules. This survey was authorized by the City and independently conducted by Kimley-Horn and Associates, Inc (Kimley-Horn).

Engineering and traffic surveys for speed limits are regularly conducted once every five (5) years by governing municipalities for the purpose of complying with Section 40802(a) of the California Vehicle Code (CVC) and the national Uniform Vehicle Code. Engineering and traffic surveys may be extended to every seven (7) years if criteria are met, or every ten (10) years if a registered engineer evaluates the section of the highway and determines that no significant changes in roadway or traffic conditions have occurred as specified in Section 40802(c) of the California Vehicle Code (CVC ). In addition, an engineering and traffic survey should be conducted on newly constructed roadway or roadways where the conditions have significantly changed. The latest Assembly Bill (AB) 43 Traffic Safety would extend the period that a speed limit justified by a traffic and engineering survey conducted more the 7 years old remains valid, for the purposes of speed enforcement, if evaluated by a registered engineer, as specified, to 14 years.

The California Governor’s office approved AB 43 on October 8, 2021, which included amendments to Sections 627, 21400, 22352, 22354, 22358, and 40802 of, and to add Sections 22358.6, 22358.7, 22358.8, and 22358.9 to, the California Vehicle Code (CVC), relating to traffic safety.

1.1 Regulations and Guidelines
Division 11, Chapter 7, of the California Vehicle Code defines the California Speed Laws.

Section 22352 of the CVC indicates that prima facie speed limits are 15 miles per hour (mph) at unprotected railroad grade crossings, highway intersections with site restrictions, and on any alley. In addition, the prima facie speed limit is 25 mph in residential and business districts, when approaching or passing a school building or grounds thereof or when passing a senior center or other facility primarily used by senior citizens. Division 1 of the CVC defines a business district and residence district in Section 235 and 515, respectively.
“A "business district" is that portion of a highway and the property contiguous thereto (a) upon one side of which highway, for a distance of 600 feet, 50 percent or more of the contiguous property fronting thereon is occupied by buildings in use for business, or (b) upon both sides of which highway, collectively, for a d i s t a n c e o f 3 0 0 f e e t , 5 0 p e r c e n t o r m o r e o f t h e c o n t i g u o u s p r o p e r t y f r o n t i n g City of Hercules January 2025
Engineering and Traffic Survey for Speed Limits Page 2
thereon is so occupied. A business district may be longer than the distances specified in this section if the above ratio of buildings in use for business to the length of the highway exists.”1
“A "residence district" is that portion of a highway and the property contiguous thereto, other than a business district, (a) upon one side of which highway, within a distance of a quarter of a mile, the contiguous property fronting thereon is occupied by 13 or more separate dwelling houses or business structures, or (b) upon both sides of which highway, collectively, within a distance of a quarter of a mile, the contiguous property fronting thereon is occupied by 16 or more separate dwelling houses or business structures. A residence district may be longer than one-quarter of a mile if the above ratio of separate dwelling houses or business structures to the length of the highway exists.”2
Section 22357(a) permits the establishment of speed limits greater than 25 mph based on the following text:
“Whenever a local authority determines upon the basis of an engineering and traffic survey that a speed greater than 25 miles per hour would facilitate the orderly movement of vehicular traffic and would be reasonable and safe upon any street other than a state highway otherwise subject to a prima facie limit of 25 miles per hour, the local authority may by ordinance determine and declare a prima facie speed limit of 30, 35, 40, 45, 50, 55, or 60 miles per hour or a maximum speed limit of 65 miles per hour, whichever is found most appropriate to facilitate the orderly movement of traffic and is reasonable and safe.”3 Therefore, the CVC allows local authorities to increase or decrease the prima facie limits by ordinance or resolution to appropriate limits as determined by an engineering and traffic survey. Posted speed limits not defined in the CVC or established by ordinance are not valid. The CVC requires that speed surveys must be performed with the use of radar or other electronic devices at locations where speed limits are to be enforced with the use of radar. The current survey must be completed within five years as specified in Section 40802(a); seven years as specified in Section 40802(c), or ten years as specified in Section 40802(c), of the date of the preceding survey. A survey allowed to expire passed the valid duration of the previous survey would constitute a speed trap as defined in Sections 40802(a) and 40802(b) of the CVC:
1 California Legislative Information, Vehicle Code, Division 1, Section 235. 2 California Legislative Information, Vehicle Code, Division 1, Section 515. 3 California Legislative Information, Vehicle Code, Division 11. Chapter 7, Section 22357(a).

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“(1) A particular section of a highway measured as to distance and with boundaries marked, designated, or otherwise determined in order that the speed of a vehicle may be calculated by securing the time it takes the vehicle to travel the known distance.
(2) A particular section of a highway with a prima facie speed limit that is provided b y t h i s c o d e o r b y l o c a l o r d i n a n c e u n d e r s u b p a r a g r a p h ( A ) o f p a r a g r a p h ( 2 ) o f subdivision (a) of Section 22352, or established under Section 22354, 22357, 22358, or 22358.3, if that prima facie speed limit is not justified by an engineering and traffic survey conducted within five years prior to the date of the alleged violation, and enforcement of the speed limit involves the use of radar or any other electronic device that measures the speed of moving objects. This paragraph does not apply to a local street, road, or school zone.
(b) (1) For purposes of this section, a local street or road is one that is functionally classified as "local" on the "California Road System Maps," that are approved by the Federal Highway Administration and maintained by the Department of Transportation. When a street or road does not appear on the "California Road System Maps," it may be defined as a "local street or road" if it primarily provides access to abutting residential property and meets the following three conditions:
(A) Roadway width of not more than 40 feet.
(B) Not more than one-half of a mile of uninterrupted length. Interruptions shall include official traffic control signals as defined in Section 445. (C) Not more than one traffic lane in each direction.
(2) For purposes of this section "school zone" means that area approaching or p a s s i n g a s c h o o l b u i l d i n g o r t h e g r o u n d s t h e r e o f t h a t i s c o n t i g u o u s t o a highway and on which is posted a standard "SCHOOL" warning sign, while children are going to or leaving the school either during school hours or during the noon recess period. "School zone" also includes the area approaching or passing any school grounds that are not separated from the highway by a fence, gate, or other physical barrier while the grounds are in use by children if that highway is posted with a standard "SCHOOL" warning sign.”4 (3) For purposes of this section, “senior zone” means that area approaching or passing a senior center building or other facility primarily used by senior citizens, or the grounds thereof that is contiguous to a highway and on which is posted a standard “SENIOR” warning sign, pursuant to Section 22352. 4 California Legislative Information, Vehicle Code, Division 17, Chapter 2, Section 40802.

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(4) For purposes of this section, “business activity district” means a section of highway described in subdivision(b) of Section 22358.9 in which a standard 25 miles per hour or 20 miles per hour speed limit sign has been posted pursuant to paragraph (1) of subdivision (a) of that section.

Assembly Bill 43 added Section 22358.8 to the CVC to read:
(a) If a local authority, after completing an engineering and traffic survey, finds that the speed limit is still more than is reasonable or safe, the local authority may, by ordinance, retain the current speed limit or restore the immediately prior speed limit if that speed limit was established with an engineering and traffic survey and if a registered engineer has evaluated the section of highway and determined that no additional general purpose lanes have been added to the roadway since completion of the traffic survey that established the prior speed limit.
(b) This section does not authorize a speed limit to be reduced by any more than five miles per hour from the current speed limit nor below the immediately prior speed limit.
(c) A local authority shall issue only warning citations for violations of exceeding the speed limit by 10 miles per hour or less for the first 30 days that a lower speed limit is in effect as authorized by this section.

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1.2 Requirements and Methodology of an Engineering and
Traffic Study
Speed zones are primarily established to protect the public from the unreasonable behavior of reckless, unreliable, or otherwise dangerous drivers. Speed limits are generally established at or near the 85th percentile speed, which is defined as the speed at or below which 85 percent of traffic is moving. Speed limits established on this basis conform to the consensus of those who drive on the roadways as to what speed is reasonable and safe and are not dependent on the judgment of one or a few individuals.

The Engineering and Traffic Survey, as defined in Section 627 of the CVC, must consider the prevailing speeds, collision records, pedestrian and bicycle activity, and roadway traffic and roadside conditions not readily apparent to the driver. Speed zones are also established to advise motorists of road conditions or hazards, which may not be readily apparent to a reasonable driver. For this reason, a field review of related road/traffic variables is conducted which is considered in combination with the statistical data and collision history of a particular roadway segment to determine a safe and reasonable speed limit. The specific procedures used in the performance of an Engineering and Traffic Study are outlined in the 2014 California MUTCD. The statistical factors used to analyze the collected speed survey data and additional factors as noted in the 2014 California MUTCD to consider are defined in the following section.

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2.0 SPEED SURVEY EVALUATION
Seventeen (17) segments were evaluated by Kimley-Horn and included in this report.

These segments and limits of the segments are listed in Table 1.

Table 1: Survey Locations and Limits Evaluated by Kimley-Horn NO STREET LIMIT 1 LIMIT 2
1 Alfred Nobel Drive John Muir Parkway End
2 Coronado Street Refugio Valley Road Carson Street
3 John Muir Parkway San Pablo Avenue Alfred Nobel Drive 4 John Muir Parkway Alfred Nobel Drive Bayfront Boulevard 5 Linus Pauling Drive San Pablo Avenue West End
6 Refugio Valley Road Sycamore Avenue Patridge Drive
7 Refugio Valley Road Patridge Drive Falcon Way-Redwood 8 Refugio Valley Road Falcon Way-Redwood Bonaire Avenue 9 San Pablo Avenue City Limits at 100 yards
west of Willow Avenue Linus Pauling Drive
10 San Pablo Avenue Linus Pauling Drive Sycamore Avenue 11 San Pablo Avenue Sycamore Avenue South City Limit
12 Sycamore Avenue Civic Drive Palm Avenue
13 Sycamore Avenue Palm Avenue City limits at 500 yards west of SR 4 Ramps
14 Turquoise Drive Sycamore Avenue Cinnabar Way
15 Willow Avenue San Pablo Avenue Canterbury Drive
16 Willow Avenue Canterbury Drive Palm Avenue
17 Willow Avenue Palm Avenue Sycamore Avenue
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2.1 Field Review
Speed data was collected using manual radar surveys performed by sub-consultant IDAX D a t a S o l u t i o n s t o K i m l e y - H o r n . E a c h o f t h e r a d a r s p e e d c h e c k s w e r e m a d e f r o m a n inconspicuously parked, unmarked vehicle. An effort was made to ensure that the presence of the vehicle in no way affected the speed of the traffic being surveyed. Field information from these speed surveys and other roadway characteristics were recorded on field data forms and later coded into engineering software for analysis purposes.

Chapter 2B of the 2014 California MUTCD indicates that it is desirable to have a minimum sample of 100 vehicles for a speed zone survey for an arterial street. This may result in excessive survey periods for low volume roadways, but a survey should not contain less than 50 vehicles.

Examples of the field data collected for the purposes of analyzing related roadway characteristics as they pertain to the determination of appropriate speed limits are listed below. The results of the field review for related roadway and traffic variables are summarized in the Engineering and Traffic Survey forms included in the Appendix.

1. Segment length, width and alignment;

2. Level of pedestrian, bicycle, and truck activity

3. Traffic flow characteristics;

4. Number of lanes and other channelization/striping factors;

5. Frequency of intersections, driveways, on-street parking, bike lanes;

6. Locations of stop signs, traffic signals, and other regulatory traffic control devices;

7. Pavement condition;

8. Obstructions to driver/pedestrian visibility;

9. Land use and proximity of schools, parks/recreation areas and senior centers;

10. Uniformity with existing speed zones in adjacent jurisdictions; and,

11. Any other unusual conditions or hazards not readily apparent to the driver.

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2.2 Statistical Analysis Factors
Significant factors used to analyze the collected survey data are summarized below:

1. 85th Percentile Speed. The Critical Speed, or the 85th percentile speed, is defined as that speed at or below which 85 percent of the traffic is moving. This factor is the primary guide in determining what speeds the majority of safe and reasonable drivers are traveling. Therefore, the practice is to set the speed limit to the nearest 5 mph increment from the critical speed unless other factors require a lower limit.

Speed limits set on this basis provide law enforcement officials with a means of controlling reckless or unreliable drivers who will not conform to what the majority finds reasonable.

2. The 10-mph Pace. The 10-mph Pace is the 10-mph increment range, which contains the largest number of recorded vehicles. The pace is a measure of the dispersion of speeds within the sample surveyed. Speed limits should normally be set to fall within the 10-mph pace. However, conditions not readily apparent to the driver or adhering to State mandated limits such as in Residence Districts may require setting speed limits below the 10-mph pace.

3. 50th Percentile Speed. The Median Speed, or 50th Percentile Speed, represents the mid-point value within the range of recorded speeds for a particular roadway location. In other words, 50 percent of the vehicles travel faster than and 50 percent travel slower than, the median speed. This value is another measure of the central tendency of the vehicle speed distribution. Typically speed limits should not be set below the 50th Percentile Speed, since it would result in greater than 50-percent of the drivers exceeding the speed limit.

4. 15th Percentile Speed. The 15th Percentile Speed is that speed at or below which 15 percent of the vehicles are traveling. This value is important in determining the minimum allowable speed limit, given that the vehicles traveling below this speed tend to obstruct the flow of traffic, thereby increasing the collision potential.

5. Percent of Vehicles in Pace Speed . The percent of vehicles in the 10-mph pace speed is an indication of the grouping of vehicular speeds. Ideally, if all vehicles were traveling at or about the same speed, there would be a reduced likelihood of vehicular collisions. In speed limit analysis, the higher the percent of vehicles within the pace speed, the more favorable the speed distribution. The percent of the 10- mph pace is often between 60 and 90 percent.

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2.3 2014 California MUTCD and CVC Guidance
Based on the 2014 California MUTCD, speed limits “shall be established at the nearest 5 mph increment of the 85th-percentile speed of free-flowing traffic.”5 In matching existing conditions with the traffic safety needs of the community, engineering judgment may indicate the need for a reduction of the posted speed limit by 5 mph due to specific factors such as road characteristics, the pace speed, roadside development and environment, pedestrian activity, and collision history. Alternatively, per CVC Code 21400(b) 5, the 2014 California MUTCD states that "for cases in which the nearest 5 mph increment of the 85th-percentile speed would require a rounding up, then the speed limit may be rounded down to the nearest 5 mph increment below the 85th-percentile speed, if no further reduction is used." 6 The following are some other factors to consider when establishing speed limits between adjacent street segments:

1. Avoid Short Segments. Short speed zones of less than ½ mile should be avoided, except in transition areas.

2. Change in Roadway Conditions or Roadside Development. Speed zone changes should be coordinated with changes in roadway conditions or roadside development.

3. Minimize Change in Speed between Adjacent Segments. Speed zoning should be in 10 mph increments except in urban areas where 5 mph increments are preferable.

4. Coordinate Speed Zoning with Adjacent Jurisdictions. 5 California Legislative Information, Vehicle Code, Division 11, Chapter 2, Article 2. 6 California Department of Transportation, 2014 California MUTCD, Chapter 2B, page 134, 7 December 2014.

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2.4 Collision History
The Engineering and Traffic Survey forms summarize the available collision information for each of the street segments. The collision information was obtained from Statewide Integrated Traffic Records System (SWITRS) from July 1, 2021 to June 30, 2024. The collisions were reviewed and corridor related collisions were summarized for each segment. Average daily traffic volumes (ADTs) were collected at all project locations.

Based on the number of total collisions studied over the 3-year period and ADT counts, a collision rate per million vehicle miles was calculated for each segment. To provide a general comparison of the collision rates on the segments to expected collisions rates for similar types of local roadways, the collision rates for each segment were compared to the statewide average rate listed in the 2022 Collision Data on California State Highways (road miles, travel, collisions, collision rates) as listed in Table 2.

Table 2: 2022 California State Highways Collision Rates Lane Type Total Collision Rate Per Million Vehicle Miles (3-year rates for 2020, 2021, and 2022)
2&3 Lanes 1.07
4 lanes (Undivided) 1.33
4 lanes (Divided) 0.99
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3.0 RESULTS AND RECOMMENDATIONS
The recommendations contained in this report are intended to establish prima facie speed limits. Prima facie limits attempt to advise the motorist and enforcement of the reasonable speed for a particular section of roadway for the prevailing conditions. In many cases, the recommendations made produce a uniform speed limit along the road. As a result, the speed limits in adjacent jurisdictions were considered as well as along the various street segments surveyed within the City of Hercules.

The Engineering and Traffic Survey forms, presented in theAppendix, illustrate the results of a thorough evaluation of the available data and indicate a recommended speed limit for each of the street segments surveyed. A summary of the data analysis, along with recommended speed limits can be found in Table 3.

One segment is in a residential district which qualifies for a Prima Facie speed limit of 25 mph per CVC sections 22352. The segment was reviewed and confirmed in the field to confirm the adjacent land uses and roadway characteristics match the descriptions and definitions of a residential district as defined in CVC. It is recommended that the speed limit remain at 25 mph for the segment, as summarized in Table 3.

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Table 3: Speed Survey Recommendations
No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
1 Alfred Nobel Drive
between John Muir
Parkway and End
35 35 35.6 31.3 27 - 36 76.0%
The 85th-percentile speed of 35.6 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 27-36 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.
2 Coronado Street
between Refugio
Valley Road and
Carson Street
30 30 34.7 30.2 26 - 35 75.0%
The 85th-percentile speed of 34.7 indicates a 35 mph
speed limit. The 10 mph pace ranges from 26-35 mph and
the suggested speed limit falls within this range. The
collision rate is higher than the expected statewide collision rate. Due to the higher than expected collision rate and presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is
recommended that the posted speed limit remains at 30
mph.
3 John Muir Parkway
between San Pablo
Avenue and Alfred
Nobel Drive
35 35 34.9 31.2 28 - 37 89.0%
The 85th-percentile speed of 34.9 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 28-37 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.

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No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
4 John Muir Parkway
between Alfred
Nobel Drive &
Bayfront Boulevard
25 25 36.5 31.5 29 - 38 75.0%
Per CVC 22352, the segment can be classified as a
"residence district" as it exceeds the ratio of contiguous property fronting by 13 or more separate dwelling houses per quarter mile. The residence district classification may be extended for the whole segment as the required ratio is maintained. Therefore, maintaining the current speed limit is justified and it is recommended that the posted speed limit remains at 25 mph.
5 Linus Pauling Drive
between San Pablo
Avenue and End
35 35 36.1 31.4 27 - 36 76.0%
The 85th-percentile speed of 36.1 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 27-36 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.
6 Refugio Valley
Road between
Sycamore Avenue
and Partridge Drive
35 35 39.0 34.2 31 - 40 76.0%
The 85th-percentile speed of 39 mph indicates a 40 mph
speed limit. The 10 mph pace ranges from 31-40 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7.

Therefore, it is recommended that the posted speed limit remains at 35 mph.

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No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
7 Refugio Valley
Road between
Partridge Drive &
Falcon Way-
Redwood Road
40 40 41.7 37.2 34 - 43 72.0%
The 85th-percentile speed of 41.7 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 34-43 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 40 mph.
8 Refugio Valley
Boulevard between
Falcon Way-
Redwood Road and
Bonaire Avenue
35 35 39.0 31.6 27 - 36 71.0%
The 85th-percentile speed of 39.0 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 27-36 mph and
the suggested speed falls outside of this range. The
collision rate is lower than the expected statewide collision rate. Due to the presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7.

Therefore, it is recommended that the posted speed limit remains at 35 mph.
9 San Pablo Avenue
between Willow
Avenue and Linus
Pauling Drive
40 40 47.6 40.8 36 - 45 67.0%
The 85th-percentile speed of 47.6 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 36-45 mph and the suggested speed falls within this range.

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No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
10 San Pablo Avenue
between Linus
Pauling Drive and
Sycamore Drive
40 40 49.0 42.8 37 - 46 65.0%
The 85th-percentile speed of 49.0 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 37-46 mph and the suggested speed falls within this range.

The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and
sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.
11 San Pablo Avenue
between Sycamore
Avenue and City
Limits
40 40 50.0 44.3 40 - 49 71.0%
The 85th-percentile speed of 50.0 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 40-49 mph and the suggested speed falls within this range.

The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and
sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.
12 Sycamore Avenue
between Civic Drive
and Palm Avenue
35 35 36.5 32.3 28 - 37 81.0%
The 85th-percentile speed of 36.5 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 28-37 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.

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No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
13 Sycamore Avenue
between Palm Avenue
and SR-4 Ramps
40 40 44.0 38.6 35 - 44 73.0%
The 85th percentile speed of 44.0 mph indicates a 40 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 35-44 mph and the suggested speed falls within this range.

The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 40
mph.
14 Turquoise Drive
between Sycamore
Avenue and Cinnabar
Way
25 25 30.2 26.7 22 - 31 92.0%
The 85th-percentile speed of 30.2 mph indicates a 30 mph speed limit. The 10 mph pace ranges from 22-31 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 25 mph.
15 Willow Avenue
between San Pablo
Avenue and
Canterbury Drive
40 40 44.0 38.4 34 - 43 70.0%
The 85th-percentile speed of 44.0 mph indicates a 45 mph speed limit. The 10 mph pace ranges from 34-43 mph and
the suggested speed falls outside of this range. The
collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.

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No. Street Segment
Existing
Posted
Speed
Limit
(mph)
Recom
Speed
Limit
(mph)
85%
Speed
(mph)
Median
Speed
(mph)
10 mph
Pace
Range
(mph)
% of
Veh. In
Pace
Justification
16 Willow Avenue
between Canterbury
Drive and Palm
Avenue
35 35 33.8 29.7 26 - 35 84.0%
The 85th-percentile speed of 33.8 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 26-35 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.
17 Willow Avenue
between Palm
Avenue and
Sycamore Avenue
35 35 41.0 36.4 31 - 40 70.0%
The 85th-percentile speed of 41.0 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 31-40 mph and
the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7.

Based on the 85th-percentile speed, it is recommended
that the posted speed limit remains at 35 mph.

City of Hercules
Engineering and Traffic Survey for Speed Limits
Appendix
City of Hercules
Engineering and Traffic Survey for Speed Limits
Engineering and Traffic Survey Forms
STREET: SURVEY DATE:

FROM: TO: End

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 10:35 AM - 11:45 AM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 31.3 mph Speed Limit Change No 85th Percentile Speed 35.6 mph Speed Justification
10 mph Pace Speed 27 - 36 mph
Percentage of Vehicles in Pace 76.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 0
Collision Rate (ACC/MVM) 0.00
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 2,458
Type of Traffic Control Stop control at Linus Pauling Dr and John Muir Pkwy Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3215'
Width 50'-60'
Number of Lanes NB - 1 SB - 1
Street Classification Collector
Divided Median? Yes - end to 315' south of Linus Pauling Dr, 285' north of John Muir Pkwy to John Muir Pkwy Designated Bike Route? No
Bike Lanes? No
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes - Continuous
Driveways? Few
Vertical Curve Yes - Continuous
Horizontal Curve Yes - 400' North of John Muir Phwy
Visibility Fair
Pavement Condition Fair
Adjacent Land Use Commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Alfred Nobel Drive
John Muir Parkway
85h-percentile speed
The 85th-percentile speed of 35.6 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 27-36 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
12/3/2024
Date
1 Alfred Nobel Drive Limits: John Muir Parkway to End
Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 44 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 100.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 40 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 39 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 96.0% 38 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 94.0% 37 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 90.0% 36 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 88.0% 35 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 80.0% 34 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 76.0% 33 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 66.0% 32 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 56.0% 31 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 48.0% 30 X X X X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14 14.0% 40.0% 29 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 26.0% 28 X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 18.0% 27 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 12.0% 26 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 4.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
10:35 AM
11:45 AM
35 mph
0 50th Percentile Speed:

35.6 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair 27.4 mph
27 - 36
76 Pavement Condition:

76.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed: Street Class.: Collector
Weather: Sunny
Date of Survey: 12/3/24

31.3 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Carson St

SPEED DATA
Location of Speed Survey Posted Speed Limit 25 mph
Time of Speed Survey 1:30 PM - 3:30 PM Recommended Speed Limit 25 mph 50th Percentile Speed (Mean Speed) 30.2 mph Speed Limit Change No 85th Percentile Speed 34.7 mph Speed Justification
10 mph Pace Speed 26 - 35 mph
Percentage of Vehicles in Pace 75.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 1
Collision Rate (ACC/MVM) 2.36
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 861
Type of Traffic Control Stop control at Carson St
Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 2,375
Width 40'
Number of Lanes NB - 1 SB - 1
Street Classification Local
Divided Median? No
Designated Bike Route? No
Bike Lanes? No
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes - Continuous
Driveways? None
Vertical Curve Yes - Continuous
Horizontal Curve Yes - at Balboa Ct
Visibility Fair
Pavement Condition New
Adjacent Land Use Residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Coronado St
Refugio Valley Rd
85th-percentile speed
downgrade due to
collision rate and CVC
22358.7
The 85th-percentile speed of 34.7 indicates a 35 mph speed limit. The 10 mph pace ranges from 26-35 mph and the suggested speed limit falls within this range. The collision rate is higher than the expected statewide collision rate. Due to the higher than expected collision rate and presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 30 mph.
11/13/2024
Date
2 Coronado Street Limits: Refugio Vallery Rd to Carson St Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 42 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 40 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 39 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 38 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 37 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 95.0% 36 X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 93.0% 35 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 89.0% 34 X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 83.0% 33 X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 77.0% 32 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 67.0% 31 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 58.0% 30 X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 48.0% 29 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 42.0% 28 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 37.0% 27 X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 27.0% 26 X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 20.0% 25 / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 14.0% 24 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 10.0% 23 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 5.0% 22 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 4.0% 21 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 20 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
1:30 PM
3:30 PM
25 mph
0 50th Percentile Speed:

34.7 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

New25.2 mph
26 - 35
75 Pavement Condition:

75.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Local
Weather: Sunny
Date of Survey: 11/13/24

30.2 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Alfred Nobel Drive

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 11:53 AM - 12:24 PM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 31.2 mph Speed Limit Change No 85th Percentile Speed 34.9 mph Speed Justification
10 mph Pace Speed 28 - 37 mph
Percentage of Vehicles in Pace 89.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 3
Collision Rate (ACC/MVM) 0.35
Expected Collisions (ACC/MVM) 0.99

TRAFFIC FACTORS
Average Daily Traffic 8,215
Type of Traffic Control Traffic signal at San Pablo Ave, stop control at Alfred Nobel Dr Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 830'
Width 80'
Number of Lanes EB - 2 WB - 2
Street Classification Arterial
Divided Median? Yes - continuous throughout segment
Designated Bike Route? Yes
Bike Lanes? Yes
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes - continuous throughout segment
Driveways? None
Vertical Curve None
Horizontal Curve Slight curve throughout segment
Visibility Good
Pavement Condition Fair
Adjacent Land Use Commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 34.9 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 28-37 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
12/3/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
John Muir Pkwy
San Pablo Avenue
85th-percentile speed
3 John Muir Pkwy Limits: San Pablo Avenue to Alfred Nobel Drive Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 44 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 42 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 40 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% 39 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 38 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 96.0% 37 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 94.0% 36 X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 90.0% 35 X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 86.0% 34 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 78.0% 33 X X X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 69.0% 32 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 57.0% 31 X X X X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13 13.0% 48.0% 30 X X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 35.0% 29 X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 23.0% 28 X X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 16.0% 27 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 26 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 24 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
11:53 AM
12:24 PM
35 mph
0 Weather: Sunny
Date of Survey: 12/3/24

31.2 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

89.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

34.9 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair27.9 mph
28 - 37
89 STREET: SURVEY DATE:

FROM: TO: Bayfront Boulevard

SPEED DATA
Location of Speed Survey Posted Speed Limit 25 mph
Time of Speed Survey 10:25 AM - 11:10 AM Recommended Speed Limit 25 mph 50th Percentile Speed (Mean Speed) 31.5 mph Speed Limit Change No 85th Percentile Speed 36.5 mph Speed Justification
10 mph Pace Speed 29 - 38 mph
Percentage of Vehicles in Pace 75.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 0
Collision Rate (ACC/MVM) 0.00
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 2,628
Type of Traffic Control Stop control at Alfred Nobel Dr Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 2625'
Width 50'-65'
Number of Lanes EB - 1 WB - 1
Street Classification Local
Divided Median? Yes- raised medians from Tioga Loop to Alfred Nobel Dr Designated Bike Route? Yes
Bike Lanes? Yes
Uncontrolled Crosswalks? Yes - at Tsushima St, Tioga Loop, 300' east of Bayfront Blvd, and Bayfront Blvd On-Street Parking? Yes - from Bayfront Blvd to 620' east, and Tioga Loop to Alfred Nobel Drive Sidewalks? Yes - Continuous
Driveways? Few
Vertical Curve None
Horizontal Curve Yes - at Tioga Loop
Visibility Good
Pavement Condition Fair
Adjacent Land Use Residential, commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

Per CVC 22352, the segment can be classified as a "residence district" as it exceeds the ratio of contiguous property fronting by 13 or more separate dwelling houses per quarter mile. The residence district classification may be extended for the whole segment as the required ratio is maintained. Therefore, maintaining the current speed limit is justified and it is recommended that the posted speed limit remains at 25 mph. 11/14/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
John Muir Parkway
Alfred Nobel Drive
CVC 22352, residence
district
4 John Muir Parkway Limits: Alfred Nobel Drive to Bayfront Boulevard Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 44 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 42 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 41 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 40 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 95.0% 39 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 93.0% 38 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 91.0% 37 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 87.0% 36 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 83.0% 35 X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 79.0% 34 X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 72.0% 33 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 64.0% 32 X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 55.0% 31 X X X / / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 45.0% 30 X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 34.0% 29 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 23.0% 28 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 16.0% 27 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 14.0% 26 X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 11.0% 25 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 3.0% 23 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 22 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
10:25 AM
11:10 AM
25 mph
0 Weather: Cloudy
Date of Survey: 11/14/24

31.5 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Local
Pavement Condition:

75.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

36.5 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair27.5 mph
29 - 38
75 STREET: SURVEY DATE:

FROM: TO: West end

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 1:10 PM - 2:30 PM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 31.4 mph Speed Limit Change No 85th Percentile Speed 36.1 mph Speed Justification
10 mph Pace Speed 27 - 36 mph
Percentage of Vehicles in Pace 76.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 0
Collision Rate (ACC/MVM) 0.00
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 1,358
Type of Traffic Control Stop control at Alfred Nobel Dr Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3115'
Width 45'-65'
Number of Lanes EB - 1 WB - 1
Street Classification Collector
Divided Median? Yes- discontinuous raised medians from 275' west of Alfred Nobel Dr to San Pablo Ave Designated Bike Route? None
Bike Lanes? None
Uncontrolled Crosswalks? None
On-Street Parking? Yes - from west end to 450' west of Alfred Nobel Dr Sidewalks? Yes - Continuous
Driveways? Moderate
Vertical Curve Yes - Continuous
Horizontal Curve Yes - at James Watson Dr
Visibility Fair
Pavement Condition Fair
Adjacent Land Use Commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 36.1 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 27-36 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
11/19/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Linus Pauling Drive
San Pablo Avenue
85th-percentile speed
5 Linus Pauling Drive Limits: San Pablo Avenue to West end Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 41 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% 40 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 39 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 38 X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 95.0% 37 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 91.0% 36 X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 84.0% 35 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 80.0% 34 X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 75.0% 33 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 65.0% 32 X X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 57.0% 31 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 45.0% 30 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 36.0% 29 X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 27.0% 28 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 19.0% 27 X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 15.0% 26 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 8.0% 25 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 6.0% 24 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 5.0% 23 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 4.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 20 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
1:10 PM
2:30 PM
35 mph
0 Weather: Cloudy
Date of Survey: 11/19/24

31.4 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Collector
Pavement Condition:

76.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

36.1 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair27.0 mph
27 - 36
76 STREET: SURVEY DATE:

FROM: TO: Partridge Drive

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 11:13 AM - 11:45 AM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 34.2 mph Speed Limit Change No 85th Percentile Speed 39.0 mph Speed Justification
10 mph Pace Speed 31 - 40 mph
Percentage of Vehicles in Pace 76.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 1
Collision Rate (ACC/MVM) 0.14
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 10,900
Type of Traffic Control Traffic signals at Sycamore Ave, Pheasant Dr, and Partridge Dr Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3210'
Width 60'-65'
Number of Lanes EB - 1/2 WB - 1/2
Street Classification Arterial
Divided Median? Yes- continuous raised medians between Sycamore Ave and Lavender Pl Designated Bike Route? Yes
Bike Lanes? Yes, eastbound form Pheasant Dr to Patridge Dr and westbound from Patridge Dr to Country Run Uncontrolled Crosswalks? None
On-Street Parking? Yes - discontinuous throughout segment Sidewalks? Yes - continuous westbound, between Sycamore Ave and Pheasant Dr eastbound Driveways? Few
Vertical Curve Continuous slight uphill
Horizontal Curve Yes - slight throughout the segment
Visibility Fair
Pavement Condition Fair
Adjacent Land Use Commercial, Recreational, Residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 39 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 31-40 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 35 mph.
11/13/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Refugio Valley Road
Sycamore Avenue
85th-percentile rate
downgraded due to CVC
22358.7
6 Refugio Valley Road Limits: Sycamore Avenue to Partridge Drive Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 49 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 96.0% 44 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 43 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 95.0% 42 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 94.0% 41 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 92.0% 40 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 89.0% 39 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 85.0% 38 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 81.0% 37 X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 76.0% 36 X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 67.0% 35 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 57.0% 34 X X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 48.0% 33 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 37.0% 32 X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 28.0% 31 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 20.0% 30 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 13.0% 29 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 10.0% 28 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 7.0% 27 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 5.0% 26 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 25 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
11:13 AM
11:45 AM
35 mph
0 Weather: Sunny
Date of Survey: 11/13/24

34.2 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

76.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

39.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair30.3 mph
31 - 40
76 STREET: SURVEY DATE:

FROM: TO: Falcon Way and Redwood Rd

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 11:50 AM - 12:25 PM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 37.2 mph Speed Limit Change No 85th Percentile Speed 41.7 mph Speed Justification
10 mph Pace Speed 34 - 43 mph
Percentage of Vehicles in Pace 72.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 4
Collision Rate (ACC/MVM) 0.49
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 8,218
Type of Traffic Control Traffic signals at Partridge Dr, Hercules Middle & High School, and Community Center; roundabout at Redwood Rd Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 4770'
Width 55'
Number of Lanes EB - 1 WB - 1
Street Classification Arterial
Divided Median? Yes - continuous throughout segment
Designated Bike Route? Yes
Bike Lanes? Yes
Uncontrolled Crosswalks? Yes - 700' west of Community Center On-Street Parking? No
Sidewalks? Yes - continuous throughout segment
Driveways? Few
Vertical Curve Continuous slight uphill
Horizontal Curve No
Visibility Fair
Pavement Condition Fair
Adjacent Land Use School, community center

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 41.7 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 34-43 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 40 mph.
11/13/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Refugio Valley Road
Partridge Drive
85th-percentile speed
7 Refugio Valley Road Limits: Partridge Drive to Falcon Way and Redwood Rd Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 48 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 99.0% X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 97.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 95.0% 45 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 95.0% 44 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 94.0% 43 X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 92.0% 42 X X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 87.0% 41 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 80.0% 40 X X X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 71.0% 39 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 59.0% 38 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 54.0% 37 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 49.0% 36 X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 42.0% 35 X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 34.0% 34 X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 27.0% 33 / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 20.0% 32 X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 16.0% 31 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 11.0% 30 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 9.0% 29 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 3.0% 27 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 3.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 2.0% 25 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 23 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
11:50 AM
12:25 PM
40 mph
0 Weather: Sunny
Date of Survey: 11/13/24

37.2 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

72.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

41.7 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair31.8 mph
34 - 43
72 STREET: SURVEY DATE:

FROM: TO: Bonaire Avenue

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 12:35 PM - 1:25 PM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 31.6 mph Speed Limit Change No 85th Percentile Speed 39.0 mph Speed Justification
10 mph Pace Speed 27 - 36 mph
Percentage of Vehicles in Pace 71.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 3
Collision Rate (ACC/MVM) 0.62
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 4,401
Type of Traffic Control Roundabout at Redwood Rd, stop control at Carson St Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 5265'
Width 40'-60'
Number of Lanes EB - 1 WB - 1
Street Classification Arterial
Divided Median? Yes- Continuous raised medians until 100' east of Mandalay Ave Designated Bike Route? No
Bike Lanes? No
Uncontrolled Crosswalks? Yes - east of Redwood Rd, Coronado St, Southwind Dr, Midship Dr, Malibu Dr On-Street Parking? Yes - continuous eastbound
Sidewalks? Yes - continuous throughout segment
Driveways? None
Vertical Curve Continuous throughout corridor
Horizontal Curve No
Visibility Fair
Pavement Condition Fair
Adjacent Land Use School, residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 39.0 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 27-36 mph and the suggested speed falls outside of this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 35 mph. 11/13/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Refugio Valley Road
Falcon Way and Redwood Rd
855h-percentile pseed
downgraded due to CVC
22358.7
8 Refugio Valley Road Limits: Falcon Way and Redwood Rd to Bonaire Avenue Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 45 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 96.0% 43 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 42 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 95.0% 41 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 93.0% 40 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 91.0% 39 X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 90.0% 38 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 87.0% 37 X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 85.0% 36 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 79.0% 35 X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 71.0% 34 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 64.0% 33 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 59.0% 32 X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 53.0% 31 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 45.0% 30 X X / / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 36.0% 29 X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 26.0% 28 X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 19.0% 27 X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 14.0% 26 / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 8.0% 25 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 24 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 22 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
12:35 PM
1:25 PM
35 mph
0 Weather: Cloudy
Date of Survey: 11/13/24

31.6 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

71.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

39.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair27.2 mph
27 - 36
71 STREET: SURVEY DATE:

FROM: TO: Linus Pauling Dr

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 11:20 AM - 11:40 AM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 40.8 mph Speed Limit Change No 85th Percentile Speed 47.6 mph Speed Justification
10 mph Pace Speed 36 - 45 mph
Percentage of Vehicles in Pace 67.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 3
Collision Rate (ACC/MVM) 0.62
Expected Collisions (ACC/MVM) 1.33

TRAFFIC FACTORS
Average Daily Traffic 8,565
Type of Traffic Control Traffic signal at Victoria Cres W Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 2735'
Width 60'-90'
Number of Lanes SB - 2/3 NB - 2
Street Classification Arterial
Divided Median? Yes- Continuous raised medians until north of Craftsman Dr Designated Bike Route? Yes
Bike Lanes? Yes
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes
Driveways? None
Vertical Curve Continuous throughout segment
Horizontal Curve No
Visibility Fair
Pavement Condition Fair
Adjacent Land Use Residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
San Pablo Avenue
City Limits at 100 yds W/O Willow Ave
85th-percentile speed
dowgraded due to bike
lanes, sidewalks, and
CVC 22358.6
The 85th-percentile speed of 47.6 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 36-45 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.
11/14/2024
Date
9 San Pablo Avenue Limits: City Limits at 100 yds W/O Willow Ave to Linus Pauling Dr Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 100.0% 55 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 98.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 95.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 94.0% 52 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 94.0% 51 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 93.0% 50 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 91.0% 49 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 90.0% 48 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 87.0% X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 82.0% X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 77.0% 45 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 72.0% 44 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 65.0% 43 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 59.0% 42 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 55.0% 41 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 52.0% 40 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 43.0% 39 X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 34.0% 38 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 26.0% 37 X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 17.0% 36 X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 10.0% 35 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 34 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 3.0% 33 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 31 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
11:20 AM
11:40 AM
40 mph
0Number in Pace: Field Study by: IDAX / KHA Observer:

Fair36.7 mph
36 - 45
67 67.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed: End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

Weather: Sunny
Date of Survey: 11/14/24

40.8 mph

47.6 mph

STREET: SURVEY DATE:

FROM: TO: Sycamore Avenue

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 12:39 PM - 1:01 PM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 42.8 mph Speed Limit Change No 85th Percentile Speed 49.0 mph Speed Justification
10 mph Pace Speed 37 - 46 mph
Percentage of Vehicles in Pace 65.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 8
Collision Rate (ACC/MVM) 1.17
Expected Collisions (ACC/MVM) 0.99

TRAFFIC FACTORS
Average Daily Traffic 10,887
Type of Traffic Control Traffic signal at John Muir Pkwy, Sycamore Ave Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3020'
Width 70'-90'
Number of Lanes SB - 2 NB - 2
Street Classification Arterial
Divided Median? Yes - continuous raised medians throughout segment Designated Bike Route? Yes
Bike Lanes? Yes
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes - southbound from Linus Pauling to John Muir Pkwy, northbound from Sycamore Ave to John Muir Pkwy Driveways? None
Vertical Curve Continuous throughout segment
Horizontal Curve Slight curve throughout the segment
Visibility Fair
Pavement Condition Moderate
Adjacent Land Use Residential, commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
San Pablo Avenue
Linus Pauling Drive
85th-percentile speed
dowgraded due to bike
lanes, sidewalks, and
CVC 22358.6
The 85th-percentile speed of 49.0 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 37-46 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.
12/3/2024
Date
10 San Pablo Avenue Limits: Linus Pauling Drive to Sycamore Avenue Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 56 X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 99.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 96.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 53 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 95.0% 52 X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 94.0% 51 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 91.0% 50 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 87.0% 49 X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 85.0% 48 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 79.0% X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 76.0% X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 72.0% 45 X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 63.0% 44 X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 57.0% 43 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 51.0% 42 X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 45.0% 41 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 38.0% 40 X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 30.0% 39 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 23.0% 38 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 15.0% 37 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 11.0% 36 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 7.0% 35 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 5.0% 34 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 33 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 31 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
12:39 PM
1:01 PM
40 mph
0 50th Percentile Speed:

49.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Moderate38.0 mph
37 - 46
65 Pavement Condition:

65.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Weather: Sunny
Date of Survey: 12/3/24

42.8 mph End Time:

STREET: SURVEY DATE:

FROM: TO: South City Limit

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 1:09 PM - 1:30 PM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 44.3 mph Speed Limit Change No 85th Percentile Speed 50.0 mph Speed Justification
10 mph Pace Speed 40 - 49 mph
Percentage of Vehicles in Pace 71.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 4
Collision Rate (ACC/MVM) 0.24
Expected Collisions (ACC/MVM) 1.33

TRAFFIC FACTORS
Average Daily Traffic 18,470
Type of Traffic Control Traffic signal at Sycamore Ave and Hercules Ave Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 4320'
Width 60'-65'
Number of Lanes SB - 2 NB - 2
Street Classification Arterial
Divided Median? Yes - Raised medians from Sycamore Ave to Tsushima St, and Hercules Ave to end of segment Designated Bike Route? Yes
Bike Lanes? Yes - from Sycamore Ave to Hercules Ave
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? Yes - continuous northbound, southboudn from Tsushima St to South City Limit Driveways? None
Vertical Curve Continuous throughout segment
Horizontal Curve No
Visibility Fair
Pavement Condition Fair
Adjacent Land Use Residential, commercial

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
San Pablo Avenue
Sycamore Avenue
85th-percnetile speed
downgraded due to bike
lanes, sidewalks, and
CVC 22358.6
The 85th-percentile speed of 50.0 mph indicates a 45 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 40-49 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.8. Therefore, it is recommended that the posted speed limit remains at 40 mph.
12/3/2024
Date
11 San Pablo Avenue Limits: Sycamore Avenue to South City Limit Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 56 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 55 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 96.0% 54 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 93.0% 53 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 92.0% 52 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 90.0% 51 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 88.0% 50 X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 85.0% 49 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 80.0% 48 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 75.0% X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 71.0% X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 63.0% 45 X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 56.0% 44 X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 48.0% 43 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 38.0% 42 X X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 29.0% 41 X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 21.0% 40 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 15.0% 39 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 9.0% 38 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 5.0% 37 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 3.0% 36 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 3.0% 35 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 34 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 33 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 31 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
1:09 PM
1:30 PM
40 mph
0 50th Percentile Speed:

50.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair40.0 mph
40 - 49
71 Pavement Condition:

71.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Weather: Sunny
Date of Survey: 12/3/24

44.3 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Palm Avenue

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 10:30 AM - 11:06 AM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 32.3 mph Speed Limit Change No 85th Percentile Speed 36.5 mph Speed Justification
10 mph Pace Speed 28 - 37 mph
Percentage of Vehicles in Pace 81.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 2
Collision Rate (ACC/MVM) 0.46
Expected Collisions (ACC/MVM) 0.99

TRAFFIC FACTORS
Average Daily Traffic 7,066
Type of Traffic Control Stop control at Redwood Rd, Lupine Rd, and Palm Ave Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 2950'
Width 80'
Number of Lanes EB - 1/2 WB - 1/2
Street Classification Arterial
Divided Median? Yes - Raised medians throughout segment Designated Bike Route? Yes - throughout segment
Bike Lanes? Yes - throughout segment
Uncontrolled Crosswalks? Yes - at Civic Dr
On-Street Parking? Yes - between Civic Dr and Redwood Rd Sidewalks? Yes - throughout segment
Driveways? None
Vertical Curve Yes - downhill east of Redwood Rd
Horizontal Curve Yes - throughout segment
Visibility Good
Pavement Condition Fair
Adjacent Land Use Residential, commercial, City Hall

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th-percentile speed of 36.5 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 28-37 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
11/13/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Sycamore Avenue
Civic Drive
85th-percentile speed
12 Sycamore Avenue Limits: Civic Drive to Palm Avenue
Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 42 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% 41 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 97.0% 40 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 95.0% 39 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 93.0% 38 / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 91.0% 37 X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 88.0% 36 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 82.0% 35 X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 78.0% 34 X X X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 70.0% 33 X X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 58.0% 32 X X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 12.0% 47.0% 31 X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 35.0% 30 X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 26.0% 29 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 18.0% 28 X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 13.0% 27 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 7.0% 26 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 2.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 23 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
10:30 AM
11:06 AM
35 mph
0 Weather: Cloudy
Date of Survey: 11/13/24

32.3 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Pavement Condition:

81.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

36.5 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair28.4 mph
28 - 37
81 STREET: SURVEY DATE:

FROM: TO: City limits at 500 yds W/O SR-4 Ramps

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 9:30 AM - 10:00 AM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 38.6 mph Speed Limit Change No 85th Percentile Speed 44.0 mph Speed Justification
10 mph Pace Speed 35 - 44 mph
Percentage of Vehicles in Pace 73.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 0
Collision Rate (ACC/MVM) 0.00
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 2,800
Type of Traffic Control Stop control at Palm Ave and SR-4 Ramps Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3390'
Width 30'-40'
Number of Lanes EB - 1 WB - 1
Street Classification Collector
Divided Median? No
Designated Bike Route? No
Bike Lanes? No
Uncontrolled Crosswalks? No
On-Street Parking? No
Sidewalks? No
Driveways? None
Vertical Curve Yes - slight vertical curves throughout segment Horizontal Curve Yes - at 1550' and 2250' east of Palm Ave Visibility Good
Pavement Condition Fair
Adjacent Land Use N/A

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

The 85th percentile speed of 44.0 mph indicates a 40 mph speed limit per CVC 22358.6. The 10 mph pace ranges from 35-44 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 40 mph. 11/14/2024
Date

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Sycamore Avenue
Palm Avenue
85th-percentile speed
reduced per CVC
22358.6
13 Sycamore Avenue Limits: Palm Avenue to City limits at 500 yds W/O SR-4 Ramps Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 55 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 99.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 53 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 95.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 94.0% 51 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 94.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 93.0% 49 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 93.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 92.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 92.0% X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 92.0% 45 X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 89.0% 44 X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 85.0% 43 X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 81.0% 42 X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 77.0% 41 X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 71.0% 40 X X X X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 64.0% 39 X X X X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 54.0% 38 X X X X X X X X X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14 14.0% 44.0% 37 X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 30.0% 36 X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 23.0% 35 X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 16.0% 34 X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 12.0% 33 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 9.0% 32 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 8.0% 31 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 7.0% 30 X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 5.0% 29 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
9:30 AM
10:00 AM
40 mph
0 Weather: Cloudy
Date of Survey: 11/14/24

38.6 mph End Time:

Percent in Pace:
10 MPH Pace: Speed:Street Class.: Collector
Pavement Condition:

73.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
50th Percentile Speed:

44.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair34.8 mph
35 - 44
73 STREET: SURVEY DATE:

FROM: TO: Cinnabar Way

SPEED DATA
Location of Speed Survey Posted Speed Limit 25 mph
Time of Speed Survey 2:40 PM - 3:10 PM Recommended Speed Limit 25 mph 50th Percentile Speed (Mean Speed) 26.7 mph Speed Limit Change No 85th Percentile Speed 30.2 mph Speed Justification
10 mph Pace Speed 22 - 31 mph
Percentage of Vehicles in Pace 92.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 1
Collision Rate (ACC/MVM) 0.35
Expected Collisions (ACC/MVM) 1.33

TRAFFIC FACTORS
Average Daily Traffic 4,075
Type of Traffic Control Traffic signal at Sycamore Ave, stop control at Park Lake Plaza, Crystal Cir (South), Cinnabar Way Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 1840'
Width 60'
Number of Lanes NB - 2 SB - 2
Street Classification Collector
Divided Median? Yes - between Sycamore Ave and Crystal Cir Designated Bike Route? No
Bike Lanes? No
Uncontrolled Crosswalks? No
On-Street Parking? Yes - continuous throughout segment
Sidewalks? Yes
Driveways? Few
Vertical Curve Yes - throughout segment
Horizontal Curve Yes - at Jasper Ct and park Lake Plaza Visibility Good
Pavement Condition Fair
Adjacent Land Use Commercial, Residential, School

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Turquoise Drive
Sycamore Avenue
85th-percentile speed
downgraded due to
presence of sidewalks
The 85th-percentile speed of 30.2 mph indicates a 30 mph speed limit. The 10 mph pace ranges from 22-31 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 25 mph.
11/19/2024
Date
14 Turquoise Drive Limits: Sycamore Avenue to Cinnabar Way Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 39 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 38 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 37 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 99.0% 36 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 35 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% 34 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 33 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 96.0% 32 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 94.0% 31 X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 92.0% 30 X X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 83.0% 29 X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 72.0% 28 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 65.0% 27 X X X X X X / / / / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16 16.0% 55.0% 26 X X X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 39.0% 25 X X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 29.0% 24 X X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 18.0% 23 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 7.0% 22 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 6.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
2:40 PM
3:10 PM
25 mph
0 50th Percentile Speed:

30.2 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair23.7 mph
22 - 31
92 Pavement Condition:

92.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Collector
Weather: Cloudy
Date of Survey: 11/19/24

26.7 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Canterbury Drive

SPEED DATA
Location of Speed Survey Posted Speed Limit 40 mph
Time of Speed Survey 3:35 PM - 3:55 PM Recommended Speed Limit 40 mph 50th Percentile Speed (Mean Speed) 38.4 mph Speed Limit Change No 85th Percentile Speed 44.0 mph Speed Justification
10 mph Pace Speed 34 - 43 mph
Percentage of Vehicles in Pace 70.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 2
Collision Rate (ACC/MVM) 0.16
Expected Collisions (ACC/MVM) 1.33

TRAFFIC FACTORS
Average Daily Traffic 14,980
Type of Traffic Control Traffic signals at San Pablo Ave, Hawthorne Dr, I-80 S Off-Ramp, I-80 N On-Ramp; stop control at Canterbury Dr Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 4100'
Width 65'-80'
Number of Lanes NB - 2 SB - 2
Street Classification Arterial
Divided Median? Yes - between I-80 ramps and Canterbury Drive Designated Bike Route? Yes - on northbound side
Bike Lanes? Yes - on northbound side
Uncontrolled Crosswalks? No
On-Street Parking? Yes - on southbound side south of I-80 ramps Sidewalks? Yes - discontinuous throughout the corridor
Driveways? Few
Vertical Curve No
Horizontal Curve Yes - at Hawthorne Dr
Visibility Good
Pavement Condition Fair
Adjacent Land Use Commercial, Residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Willow Avenue
San Pablo Avenue
85th-percentile speed
downgraded due to
presence of bike lanes
and sidewalks
The 85th-percentile speed of 44.0 mph indicates a 45 mph speed limit. The 10 mph pace ranges from 34-43 mph and the suggested speed falls outside of this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Therefore, it is recommended that the posted speed limit remains at 40 mph.
11/19/2024
Date
15 Willow Avenue Limits: San Pablo Avenue to Canterbury Drive Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 53 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 99.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 97.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 97.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 97.0% 49 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 48 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 96.0% X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 93.0% X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 91.0% 45 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 90.0% 44 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 85.0% 43 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 84.0% 42 X X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 78.0% 41 X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 68.0% 40 X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 61.0% 39 X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 55.0% 38 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 47.0% 37 X X X X / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 42.0% 36 X X X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 31.0% 35 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 23.0% 34 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 19.0% 33 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 14.0% 32 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 9.0% 31 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 6.0% 30 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 5.0% 29 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 4.0% 28 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 1.0% 25 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
3:35 PM
3:55 PM
40 mph
0 50th Percentile Speed:

44.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair33.2 mph
34 - 43
70 Pavement Condition:

70.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Weather: Cloudy
Date of Survey: 11/19/24

38.4 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Palm Avenue

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 3:20 PM - 3:35 PM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 29.7 mph Speed Limit Change No 85th Percentile Speed 33.8 mph Speed Justification
10 mph Pace Speed 26 - 35 mph
Percentage of Vehicles in Pace 84.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 2
Collision Rate (ACC/MVM) 0.44
Expected Collisions (ACC/MVM) 1.33

TRAFFIC FACTORS
Average Daily Traffic 7,301
Type of Traffic Control Stop control at Canterbury Dr, Route 4 off-ramp, Palm Ave Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3000'
Width 45'-85'
Number of Lanes NB - 1/2 SB - 1/2
Street Classification Arterial
Divided Median? Yes - between Canterbury Dr to Route 4 off ramps Designated Bike Route? Yes
Bike Lanes? Yes - SB south of Route 4 to Palm Ave, NB between Canterbury Dr and Mariner's Pointe Uncontrolled Crosswalks? Yes - at Mariner's Pointe
On-Street Parking? Yes - between Mariner's Pointe and Route 4 off ramps Sidewalks? Yes - northbound continuous throughout segment, and southbound from Palm Ave to 200' north Driveways? Some
Vertical Curve Yes - on Route 4 overpass
Horizontal Curve Yes - continuous throughout segment
Visibility Good
Pavement Condition Fair
Adjacent Land Use Commercial, Residential

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Willow Avenue
Canterbury Drive
85th-percentile speed
The 85th percentile speed of 33.8 mph indicates a 35 mph speed limit. The 10 mph pace ranges from 26-35 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
11/19/2024
Date
16 Willow Avenue Limits: Canterbury Drive to Palm Avenue Typical
Cross-section
Radar Survey Sheet X = North / = South
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 48 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 43 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 41 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 39 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 100.0% 38 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 98.0% 37 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 96.0% 36 X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 95.0% 35 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 90.0% 34 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 86.0% 33 X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 81.0% 32 X X X X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10.0% 75.0% 31 X X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 65.0% 30 X X X X / / / / / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14 14.0% 54.0% 29 X X X X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9.0% 40.0% 28 X X X X X / / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 31.0% 27 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 20.0% 26 X / / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 12.0% 25 X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 6.0% 24 X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 3.0% 23 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
3:20 PM
3:35 PM
35 mph
0 50th Percentile Speed:

33.8 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

Fair26.4 mph
26 - 35
84 Pavement Condition:

84.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Weather: Cloudy
Date of Survey: 11/19/24

29.7 mph End Time:

STREET: SURVEY DATE:

FROM: TO: Sycamore Avenue

SPEED DATA
Location of Speed Survey Posted Speed Limit 35 mph
Time of Speed Survey 9:30 AM - 10:08 AM Recommended Speed Limit 35 mph 50th Percentile Speed (Mean Speed) 36.4 mph Speed Limit Change No 85th Percentile Speed 41.0 mph Speed Justification
10 mph Pace Speed 31 - 40 mph
Percentage of Vehicles in Pace 70.0%
Number of Survey Samples 100

COLLISION HISTORY
Number of Years Studied 3
Total Collisions 3
Collision Rate (ACC/MVM) 0.92
Expected Collisions (ACC/MVM) 1.07

TRAFFIC FACTORS
Average Daily Traffic 4,180
Type of Traffic Control Signal at Sycamroe Ave, Stop control at Route 4 ramps and Palm Ave Pedestrian Traffic Low
Truck Traffic Low

ROADWAY CHARACTERISTICS
Length of Segment 3780'
Width 25'-50'
Number of Lanes EB - 2 WB - 1
Street Classification Arterial
Divided Median? No
Designated Bike Route? Yes
Bike Lanes? Yes - east of Route 4 ramps for 400', sharrows to Palm Ave Uncontrolled Crosswalks? None
On-Street Parking? No
Sidewalks? Yes - continuous throughout segment northbound, and from Palm Ave to 200' north southbound Driveways? Some
Vertical Curve Slight curve at Hercules Transit Center
Horizontal Curve Yes - at Hercules Transit Center
Visibility Good
Pavement Condition New
Adjacent Land Use Commercial, Transit Center

COMMENTS
Approved and Authorized for release by City of Hercules, CA:

CITY OF HERCULES

ENGINEERING AND TRAFFIC SURVEY
Willow Avenue
Palm Avenue
85th-percentile
downgraded due to
presence of bike lanes
and sidewalks
The 85th-percentile speed of 41.0 mph indicates a 40 mph speed limit. The 10 mph pace ranges from 31-40 mph and the suggested speed falls within this range. The collision rate is lower than the expected statewide collision rate. Due to the presence of bike lanes and sidewalks, a downgrading of the speed limit by 5 mph is justified per CVC 22358.7. Based on the 85th-percentile speed, it is recommended that the posted speed limit remains at 35 mph.
11/13/2024
Date
17 Willow Avenue Limits: Palm Avenue to Sycamore Avenue Typical
Cross-section
Radar Survey Sheet X = East / = West
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 55 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 52 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 100.0% 51 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 100.0% 50 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 99.0% 49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 98.0% 48 X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 98.0% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 97.0% / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 97.0% 45 X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 96.0% 44 / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2.0% 94.0% 43 X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4.0% 92.0% 42 X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 88.0% 41 X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 85.0% 40 X X X X X X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 80.0% 39 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 69.0% 38 X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 63.0% 37 X X X X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11.0% 57.0% 36 X X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 46.0% 35 X X X X / / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8.0% 40.0% 34 X X X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7.0% 32.0% 33 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 25.0% 32 X X / / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 20.0% 31 X X X / / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5.0% 15.0% 30 X X X X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 6.0% 10.0% 29 X X / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3.0% 4.0% 28 / 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1.0% 1.0% 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 15 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 14 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 13 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0% 0.0% 100
9:30 AM
10:08 AM
35 mph
0 50th Percentile Speed:

41.0 mph
Number in Pace: Field Study by: IDAX / KHA Observer:

New31.0 mph
31 - 40
70 Pavement Condition:

70.0%
Start Time:
15th Percentile Speed:

City of Hercules
Transportation Services Division
Street Name:

Total Samples =
85th Percentile Speed:

Posted
Percent in Pace:
10 MPH Pace: Speed:Street Class.: Arterial
Weather: Sunny
Date of Survey: 11/13/24

36.4 mph End Time:

Hercules City CouncilFebruary 11, 2025

Hercules City Council
February 11, 2025