Attachment A - 2024 Engineering and Traffic Survey — Palo Alto City Council, September 8, 2025

June X, 2023

2024 Engineering & Traffic Survey
City of Palo Alto, CA

Engineering and Traffic Survey
February 3, 2025
City of Palo Alto, California
i
This Citywide Engineering and Traffic Survey for City of Palo Alto has been prepared under the direction of a licensed Traffic Engineer. The licensed Traffic Engineer attests to the technical information contained therein, and has judged the qualifications of any technical specialists providing engineering data, which recommendations, conclusions and decisions are based. These surveys conform to Sections 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommend speed limits appropriate to facilitate the safe and orderly movement of traffic.

Prepared By:
____________________________
Nayan Amin, TE
President, TJKM
4305 Hacienda Drive, Suite 550
Pleasanton, CA 94588-2798
Tel: 925.463.0611
Fax: 925.463.3691
ii

TABLE OF CONTENTS

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

1.1 Relevant California Vehicle Code Sections ................................................................................................................. 7

2.0 Data Collection and Analysis ................................................................................................................... 11

2.1 Radar Speed Surveys and Analysis ..............................................................................................................................11

2.2 Average Daily Traffic (ADT) Volumes ..........................................................................................................................12

2.3 Field Observations ..............................................................................................................................................................13

2.4 Traffic Collision Data ..........................................................................................................................................................19

3.0 Speed Limit Recommendations ............................................................................................................... 26 TABLES
Table 1: Survey Segments ................................................................................................................................................................. 3 Table 2: Safety Corridor Definition Requirements ................................................................................................................... 9 Table 3: Land Uses and Facilities that Generate High Concentrations of Bicyclists and/or Pedestrians ........... 9 Table 4: Procedure of Rounding and Speed Limit Reductions on Local Agency Roadways ............................... 10 Table 5: Speed Survey Summary ................................................................................................................................................. 14 Table 6: Average Daily Traffic Volumes .................................................................................................................................... 16 Table 7: Collision History Summary (Jan. 2019 – Dec. 2021) ............................................................................................ 20 Table 8: Collision History Comparison with Statewide Averages ................................................................................... 23 Table 9: Recommended Speed Limits Summary .................................................................................................................. 29 iii

FIGURES
Figure 1: Types of Speed Limits ...................................................................................................................................................... 1 Figure 2: Survey Locations ................................................................................................................................................................ 5 Figure 3: Existing Speed Limits........................................................................................................................................................ 6 Figure 4: Average Daily Traffic Volumes................................................................................................................................... 18 Figure 5: Collision Analysis ............................................................................................................................................................ 25 Figure 6: Illustration of Procedure of Rounding and Speed Limit Reductions on Local Agency Roadways . 28 Figure 7: Recommended Speed Limit Changes .................................................................................................................... 31 Figure 8: Recommended Speed Limits ..................................................................................................................................... 32

APPENDICES
Appendix A: Recommended Speed Limit Certifications and Supporting Data (Speed Survey Collection Forms and Average Daily Traffic Volumes)
Appendix B: Collision Data
1 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

1.0 INTRODUCTION
The purpose of this survey is to evaluate the posted speed limits for 23 segments within the City of Palo Alto and recommend speed limit changes, if any, in accordance with the State of California regulations and guidelines. California Vehicle Code (CVC) Section 40802 requires that Engineering and Traffic Survey (E&TS) for speed limits should be conducted at least once every seven or 14 years based on established criteria.

State and local agencies re -evaluate non -statutory speed limits on their street segments that have undergone a significant change in roadway characteristics or surrounding land uses since the spee d limits were last reviewed.

The California State Legislature sets in place the regulations for California speed limits and the CVC places these regulations into language used primarily for enforcement purposes. Various jurisdictions have responsibility for roadways throughout California, including the responsibility to set speed limits on these roadways according to the standards and procedures established by Caltrans. The guidelines from the California Manual for Setting Speed Limits published by Caltrans (Rev. February, 2020) are used in this study.

These guidelines help in establishing speed limits that are uniform throughout the state and avoid influence from political pressure or emotional perceptions.

Speed limits are established primarily for protecting the public from the behavior of reckless, unreliable, or dangerous drivers. Speed limits are generally established at or near the 85th percentile speed. The 85th percentile speed, also referred to as the critical speed, is defined as the speed at or below which 85 percent of traffic is moving in free flow conditions. 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 under normal driving conditions. Figure 1 illustrates the various speed limit signs for different zones and roadways.

Figure 1: Types of Speed Limits
M
any factors influence drivers and their perception of the safe speed at which to operate a vehicle. These factors should be considered as a whole because it is not practical to consider each individually. The design and physical characteristics of the roadway place limitations on the safe operating speed of vehicles. These characteristics include, but are not limited to:
• Roadway geometrics, shoulder condition, grade, alignment, and sight distance ; Source: FHWA
2 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
• Roadside development, zoning, and environment;
• Parking practices;
• Bicycle and pedestrian activity;
• Driveway density;
• Signalized or stop-controlled intersections; and
• Rural, residential or developed areas.

The study follows the goals and visions set in the City of Palo Alto 2030 Comprehensive Plan . The City of Palo Alto aims to guide the City's transportation system and address issues related to safety, mobility and access. Some of the goals outlined in the Transportation Circulation Element include:
• Maintaining an efficient roadway network for all users. • Protecting streets and adopted school commute corridors that contribute to neighborhood character and provide a range of local transportation options. • Providing a safe environment for motorists, pedestrians, and bicyclists on Palo Alto streets.

The recommendations made in this study comply with the vision and goals identified in the Comprehensive Plan.

This report presents the resul ts of the E&TS conducted during September 2023 for 23 street segments throughout the City of Palo Alto , and incorporates input from radar speed surveys, average daily traffic counts, segment collision analyses, and analys es of roadway characteristics. The 23 survey segments included in the study are listed in Table 1, are shown in Figure 2, and are categorized below by roadway types:
• Five segments are designated as ‘Residential Arterials’ • 13 segments are designated as ‘Local/Collectors’
• Five segments are designated as ‘Arterials’
The existing speed limits for the survey segments are illustrated in Figure 3. 3 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 1: Survey Segments
No. Street Survey Limits Roadway
Classification
Roadway
Type
No.
of
Lanes
Width
(feet)
Length
(miles)
Existing
Speed
Limit
(mph)
1 Alma St. El Camino Real to
University Ave. Arterial Undivided 2 50 0.48 25
2 Charleston
Rd.

Fabian Way to
Southern City Limits Arterial Undivided 4 64 0.33 35
3 Embarcadero
Rd.

El Camino Real to
Alma St. Overcrossing Arterial Undivided 4 64 0.24 25
4 Fabian Way Charleston Rd. to W.

Bayshore Rd. Local/Collector Undivided 4 60 0.57 30
5 Hanover St. Page Mill Rd. to
Hillview Ave. Local/Collector Undivided 2 40 0.75 30
6 Hillview Ave. Hanover St. to
Foothill Exp. Local/Collector Undivided 2 40 0.37 30
7 Middlefield
Rd.

University Ave. to
Embarcadero Rd.

Residential
Arterial Undivided 2- to
4 40 0.96 25
8 San Antonio
Rd.

Alma St. to
Middlefield Rd. Arterial Divided 4 70 0.61 35
9 San Antonio
Rd.

Middlefield Rd. to
Charleston Rd. Arterial Divided 4 76 0.40 35
10 W. Bayshore
Rd.

Loma Verde Ave. to
Fabian Way Local/Collector Undivided 2 32 0.58 35
11 Charleston
Rd.

El Camino Real to
Alma St.

Residential
Arterial Undivided 4 54 0.40 25
12 Charleston
Rd.

Alma St. to
Middlefield Rd.

Residential
Arterial Divided 2- to
4 56 0.58 25
13 Charleston
Rd.

Middlefield Rd. to
Fabian Way
Residential
Arterial Divided 2 56 0.36 25
14 Deer Creek
Rd.

Page Mill Rd. to
Arastradero Rd. Local/Collector Undivided 2 46 0.70 40
15 El Camino
Way
Los Robles Ave. to
Maybell Ave. Local/Collector Undivided 2 40 0.35 25
16 Hansen Way El Camino Real to
Page Mill Exp. Local/Collector Undivided 2 40 0.57 30
17 Louis Rd. Oregon Exp. to Loma
Verde Rd. Local/Collector Undivided 2 36 0.82 25
18 Louis Rd. Loma Verde Ave. to
Charleston Rd. Local/Collector Undivided 2 36 1.06 25
19 N. California
Ave.

Embarcadero Rd. to
Middlefield Rd. Local/Collector Undivided 2 32 0.78 25
20 Park Blvd. California Ave. to
Lambert Ave. Local/Collector Undivided 2 36 0.58 25
21 Quarry Rd. El Camino Real to
Campus Dr. Local/Collector Divided 4 70 0.74 25
22 Middlefield
Rd.

University Ave. to
Northern City Limits
Residential
Arterial Undivided 2 40 0.38 25

4 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits Roadway
Classification
Roadway
Type
No.
of
Lanes
Width
(feet)
Length
(miles)
Existing
Speed
Limit
(mph)
23 Porter Dr. Page Mill Rd. to
Hillview Ave. Local/Collector Undivided 2 40 0.41 25

1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROAD

EMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
Figure 2: Study Segments
Survey Segments
Segments
Roads
City of
Segment ID
City of Palo Alto
XX
TJKM Transportation Consultants | 05/2024
0 0.5 1 0.25
Miles
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROAD

EMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
TJKM Transportation Consultants | 05/2024
0 0.5 1 0.25
Miles
Figure 3: Existing Speed Limits
LEGEND
Roads
Segment IDXX
Existing Speed Limits
40 mph
25 mph
30 mph
35 mph
City of Palo Alto

7 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

1.1 Relevant California Vehicle Code Sections
Applicable California Vehicle Code (CVC) Code sections for conducting an E&TS are summarized below:

CVC SECTION 235 – BUSINESS DISTRICT: An area in which at least 50 percent of the properties are used for business for a minimum distance of 400 feet on one side or 300 feet on both sides of a highway.

CVC SECTION 515 – RESIDENCE DISTRICT: An area outside of the Business District along a highway that has a minimum of 13 separate dwelling units on one side, or 16 on both sides within a distance of a quarter mile.

CVC SECTION 627 – ENGINEERING AND TRAFFIC SURVEY: A survey of highway and traffic conditions in accordance with methods determined by the California Department of Transportation (Caltrans) for use by state and local authorities, which shall include consideration of prevailing speeds as determined by traffic engineering measurements, collision records, and highway, traffic, and roadside conditions not readily apparent to the driver. Local authorities may also consider residential district density (as defined in Section 515) and pedestrian and bicyclist safety.

CVC SECTION 22349 – MAXIMUM SPEED LIMITS: Provides that no person shall drive a vehicle upon a highway at a speed greater than 65 mph. An exception to this, as stated in CVC Section 22356, is that Caltrans may increase the speed and these increases can only be made after consultation with the California Highway Patrol (CHP) and based on an engineering and traffic survey. Even if the maximum speed is raised, certain vehicles are still not permitted to be driven over 55 mph. These are listed below :
• Motor trucks having three or more axles or any truck towing another vehicle • Passenger vehicles towing other vehicles
• School buses transporting school pupils
• Farm labor vehicles transporting passengers
• Vehicles transporting explosives
CVC SECTION 22350 – BASIC SPEED LAW: Provides that no person shall drive a vehicle upon a highway at a speed greater than is reasonable or prudent having due regard for weather, visibility, the traffic on, and the surface and width of, the highway, and in no event at a speed which endangers the safety of persons or property. In other words, a driver violates the basic speed law if he or she is driving at unsafe speeds, even if that speed is lower than the posted regulatory speed limit sign.

CVC SECTION 22351 – SPEED LAW VIOLATIONS: States that the speed of any vehicle upon a highway not in excess of the limits specified in CVC Section 22352 or established as authorized in the CVC is lawful unless clearly proved to be in violation of the Basic Speed Law. This same section also states that the speed of any vehicle upon a highway in excess of the prima facie speed limits in CVC Section 22352 or established as authorized in the CVC is unlawful unless the defendant establishes by competent evidence that the speed in excess of said limits did not constitute a violation of the Basic Speed Law at the time, place and under the conditions then existing.

8 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
CVC SECTION 22352 – PRIMA FACIE SPEED LIMITS: Establishes prima facie speed limits for local roads and streets. The term “prima facie”, as used in the CVC, is a speed limit that applies when no other specific speed limit is posted. It is a Latin term meaning “at first face” or “at first appearance”. It is also defined as “first view” and “before investigation”. Prima facie evidence is evidence sufficient to establish fact, or to raise presumption of fact, unless rebutted. These speed limits shall be applicable unless changed as authorized in the CVC and, if so changed, only when signs have been erected giving notice thereof. It sets two speed limits covering six classes of location.

A speed limit of 15 mph applies at railroad crossings, at uncontrolled highway intersections with obstructed view, and on alleys. A speed limit of 25 mph applies on any highway other than State highways in any business or residence district, unless a different limit is established by procedures described in the CVC. The 25 mph limit also applies in school zones.

CVC SECTION 22357 (INCREASE OF LOCAL SPEED LIMITS TO 65 MPH) AND CVC SECTION 22358 (DECREASE OF LOCAL SPEED LIMITS): Authorizes local authorities to establish prima facie speed limits on streets and roads under their jurisdiction, on the basis of an engineering and traffic survey.

CVC SECTION 22358.3 (DECREASE ON NARROW STREETS) AND CVC SECTION 22358.4 (DECREASE OF LOCAL LIMITS NEAR SCHOOLS OR SENIOR CENTERS): Authorizes local agencies to reduce prima facie speed limits to 20 or 15 mph on narrow streets (with roadway width less than 25 feet), school zones, or senior centers on the basis of engineering and traffic surveys.

CVC SECTION 22358.5 – DOWNWARD SPEED ZONING: Physical conditions such as width, curvature, grade, and surface conditions, or any other condition readily apparent to a driver, in the absence of other factors, would not require special downward speed zoning.

CVC SECTION 22358.6 – ROUNDING OF SPEED LIMITS: Authorizes local agencies to round speed limits to the nearest five miles per hour of the 85
th percentile speed of the free-flowing traffic. In cases where the 85th percentile speed results in rounding up to the nearest five-mile per hour increment, the local authority may round the speed limit down to the lower five -mile per hour increment. Local authorities may additionally lower the speed limit as provided by CVC Section 22358.7 and CVC Section 22358.8.

CVC SECTION 22358.7 – 5 MPH SPEED LIMIT REDUCTION: Authorizes local agencies to reduce the speed limit by an additional 5 mph if the portion of highway has been designated as a “safety corridor,” as defined in the C alifornia Manual on Uniform Traffic Control Devices (CA MUTCD ; Table 2), or if the portion of highway is adjacent to any land or facility that generates high concentrations of bicyclists or pedestrians (Table 3), especially those from vulnerable groups such as children, senior, persons with disabilities, and the unhoused.

The procedure of rounding speed limits according to CVC Section 22358.6 and CVC Section 22358.7 is tabulated in Table 4.

9 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 2: Safety Corridor Definition Requirements
Category Factors
Crash Weighting Factors to Develop One
Serious/Fatal Injury Safety Corridor
Crash weighting can be developed using fatal and serious injury crash data and other factors to prioritize safety corridors. Suggested weighting factors are as follows:
• Crash severity: Fatal Crashes, Serious Injury Crashes • Mode: Pedestrian-bicycle related crashes,
vehicle/other
• Disadvantaged Community Status: MPO/RTPA or
locally defined disadvantaged community status
based on most current version of CalEnviroScreen
• Vulnerable Populations: Seniors (age 65 and older)
and Youth (under age 15) based on the American
Community Survey
• School proximity (within 0.25 miles) based on the
California School Campus Database
Crash Density
Each roadway segment block can be converted into ~ 0.25 mile overlapping "corridor" segments to create a consistent unit of measurement and assess the concentration of linear patterns of injuries within a define[d] distance. The highest scoring (i.e. most fatal and serious injury crashes per mile) "corridor" segments within a street needs to be identified and an appropriate threshold set to determine safety corridor eligibility.

Maintenance
The jurisdiction can establish a review and re-evaluation frequency for safety corridors. However, such frequency need not exceed seven years.

Source: 2014 CA MUTCD, Revision 7, Table 2B-105(CA)

Table 3: Land Uses and Facilities that Generate High Concentrations of Bicyclists and/or Pedestrians Category Generator
Land Use
Employment centers
Presence of retail
Parks, multi-use trails, and recreational destinations
Schools/universities
Senior Centers
Cultural areas, entertainment space areas, or areas of community significance
Religious facilities
Health/medical facilities
Transit Factors Transit stops
Transit Oriented Developments/Transit Priority Areas
Presence of Pedestrian/Bicyclist Infrastructure
Sidewalk presence
Crosswalk presence
Bikeway presence
Nearby signalized intersections on four-way intersections Presence of micromobility devices such as bicycles or scooters

10 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Category Generator
Demographic Factors
Presence of vulnerable groups including children, seniors, persons with disabilities, users of personal assistive mobility devices, and the unhoused
MPO/RTPA or locally defined disadvantaged community status Presence of students (all levels)
Local Data Need identified in a safety analysis such as a road safety audit or formalized planning document such as a local road safety plan Source: 2014 CA MUTCD, Revision 7, Table 2B-106(CA)

Table 4: Procedure of Rounding and Speed Limit Reductions on Local Agency Roadways 85th-Percentile
Speed (mph)
Rounding to
nearest 5 mph
increment
(CVC 22358.6(a))
If rounding to
nearest is up, may
round down
(CVC 22358.6(c))
If rounding to
nearest is down,
may additionally
lower by 5 mph
(CVC 22358.6(b))
If safety corridor or
adjacent to high
concentration of
bicyclists & pedestrians,
may additionally lower
by 5 mph
(CVC 22358.7)

47.5-50.0 50 45 No 40

45.1-47.4 45 No 40 35

42.5-45.0 45 40 No 35

40.1-42.4 40 No 35 30
Source: 2014 CA MUTCD, Revision 7, Table 2B-104(CA)
CVC SECTION 22358.8 – RETAINMENT OF LOCAL SPEED LIMIT: Authorizes local agencies to retain an existing speed limit on a portion of highway if it was established in a previous E&TS with a speed limit certification sheet and if a registered traffic engineer has determined that no additional general purpose lanes have been added to the portion of highway since completion of the previous E&TS.

CVC SECTION 40802 (A)(2) – PRIMA FACIE SPEED LIMITS: Provides that prima facie speed limits established under CVC Sections 22352(b)(1), 22354, 22357, 22358, and 22358.3 may not be enforced by radar unless the speed limit has been justified by an engineering and traffic survey within the last five years.

This CVC section does not apply to a local street, road or school zone.

CVC SECTION 40802 (B) – PRIMA FACIE SPEED LIMITS: 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 ap proved 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:
• Roadway width of not more than 40 feet;
• Not more than one-half of a mile of uninterrupted length. Interruptions shall include official traffic control signals as defined in CVC Section 445; and
• Not more than one traffic lane in each direction.

11 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

2.0 DATA COLLECTION AND ANALYSIS
The basic purpose of this study is to evaluate selected arterial, collector, and local streets within the City of Palo Alto limits and to recommend appropriate spee d limit revisions consistent with current laws and practices of California. The TJKM team, in coordination with the City of Palo Alto staff, coordinated the E&TS.

The data collection procedure and speed survey analysis methodology is briefly discussed belo w.

2.1 Radar Speed Surveys and Analysis
The speed surveys involve the use of radar guns to collect sample speeds on selected street segments. A key aspect for conducting the surveys is to ensure that street segments with unique characteristics are individually surveyed. The most crucial component of a speed zone survey is the selection of locations for the data collection task. The prevailing speed at the data collection point was selected to be representative of the entire speed zone area.

The project team worked with the City of Palo Alto staff and finalized the 23 street segments to be analyzed in this E&TS. Radar speed surveys were conducted in fall 2023 on days with fair weather, clear visibility, and dry pavement conditions. The survey location s were selected where the prevailing speeds were representative of the entire street segment and were not too close to any traffic control device. The selected locations were situated beyond the influence of stops, dips, curves, parked vehicles, and any other condition that may affect the normal rate of travel. An effort was made to ensure that the presence of radar survey equipment did not affect the speed of the traffic being surveyed.

The radar speed surveys were conducted for all study segments, using c alibrated radar equipment by certified technicians. Most samples sizes for a particular segment include around 100 vehicles . In the case of low volume roadways, surveys were conducted for a minimum of a 90 minute period.

A Speed Survey Form was used to collect and summarize the following attributes:
• Street surveyed
• Precise location
• Street direction
• Date/day of the survey
• Start time & end time of survey
• Number of vehicles surveyed
• 85th percentile speed, 50th percentile speed, 10 mile pace • Percent and number of vehicles observed within the 10 mph pace speed • Percent and number of vehicles observed below pace
• Percent and number of vehicles observed above pace
• Range of speeds observed and standard deviation
A description of some of the attributes is provided below:

12 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
50TH PERCENTILE SPEED (MEDIAN SPEED): The speed above and below which 50 percent of the sample speeds were observed. This value indicates the speed that a driver may choose to drive without the influence of any speed limits, speed signs, or enforcement.
85TH PERCENTILE SPEED (CRITICAL SPEED): The speed at or below which 85 percent of the sample speeds were observed. The 85th percentile speed of a spot speed survey is the primary indicator of the appropriate speed limit for a section of the roadway.
10 MPH PACE SPEED: The 10 mph increment (range) of speeds containing the greatest number of vehicles.

In most cases, the 85th percentile speed and the recommended speed lie within the range, frequently in the middle to upper range of the interval. The percent o f vehicles that fall within the pace speed is an indicator of the bunching of vehicular speeds. The number of observed vehicles within the 10 mph pace is often between 40 and 80 percent of the entire sample.

AVERAGE SPEED: The average speed is simply the c umulative speed divided by the number of observed vehicles.

SPEED RANGE: The range of speed is simply the difference in speed s of the fastest and slowest vehicles observed. A large range of speeds (in excess of 30 mph, for example) indicates less favorable conditions than a smaller range. The greater the range, the more inconsistency in travel speeds with a greater likelihood of traffic collisions. In general, uniform speeds result in a smooth progression of traffic.

The radar speed survey data was compiled and analyzed to determine the 50th percentile speed, the 85th percentile speed, the average speed, the speed range, the 10 mph pace speed, and the percent of vehicles observed within the 10 mph pace.

Table 5 presents the speed survey summary with existing speed limits, median speed, critical speed, 10 mile pace speed, and the percent of vehicles observed within pace. The completed speed survey forms for all 23 study segments are included in Appendix A.

2.2 Average Daily Traffic (ADT) Volumes
The TJKM team collected average d aily traffic (ADT) counts for all study segments by conducting tube counts along the segments . These counts were used to determine the collision rates for each segment, which in turn was used as a factor in determining the appropriate speed limit for each segme nt. Table 6 summarizes the roadway classification and ADT volumes for each study segment. The existing ADT volumes for the survey segments are illustrated in Figure 4. The ADT counts are available in Appendix A.

13 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

2.3 Field Observations
A final field check was conducted by driving each study segment while “floating” with prevailing traffic to determine the speed of traffic that is reasonable from the engineer’s viewpoint. The traffic engineer evaluates the appropriateness of the 85th percentile speed and adds the perspective of human judgment to set the appropriate speed limit. Factors such as roadside development, the number and location of driveways, parked vehicles; emergency shoulder areas, schools and playgrounds, areas frequented by pedestrians, horizontal and vertical alignment of the roadway, intersection spacing, visibility and control, landscaping, street fixtures, and other less tangible factors, all contribute to finalizing the recommended speed limits.

14 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 5: Speed Survey Summary
No. Street Survey Limits
Existing
Speed
Limit
(mph)
No.

Speed
Data
Collected
Median
(mph)
85th
Percentile
(mph)
10-
Mile
Pace
(mph)
Percent
w/in
Pace
1 Alma St. El Camino Real to
University Ave. 25 207 29 32 24-33 86%
2 Charleston Rd. Fabian Way to
Southern City Limits 35 166 34 39 30-39 79%
3 Embarcadero
Rd.

El Camino Real to
Alma St. Overcrossing 25 201 31 35 27-36 79%
4 Fabian Way Charleston Rd. to W.

Bayshore Rd. 30 210 36 42 31-40 70%
5 Hanover St. Page Mill Rd. to
Hillview Ave. 30 203 28 33 23-32 79%
6 Hillview Ave. Hanover St. to Foothill
Exp. 30 129 28 32 23-32 84%
7 Middlefield Rd. University Ave. to
Embarcadero Rd. 25 180 29 33 25-34 87%
8 San Antonio
Rd.

Alma St. to
Middlefield Rd. 35 200 39 44 34-43 76%
9 San Antonio
Rd.

Middlefield Rd. to
Charleston Rd. 35 201 35 39 29-38 72%
10 W. Bayshore
Rd.

Loma Verde Ave. to
Fabian Way 35 167 39 45 34-43 68%
11 Charleston Rd. El Camino Real to
Alma St. 25 211 32 36 28-37 80%
12 Charleston Rd. Alma St. to
Middlefield Rd. 25 175 30 35 25-34 77%
13 Charleston Rd. Middlefield Rd. to
Fabian Way 25 204 31 37 26-35 70%
14 Deer Creek Rd. Page Mill Rd. to
Arastradero Rd. 40 178 33 38 30-39 62%
15 El Camino Way Los Robles Ave. to
Maybell Ave. 25 121 25 28 20-29 87%
16 Hansen Way El Camino Real to
Page Mill Exp. 30 161 31 35 27-36 81%
17 Louis Rd. Oregon Exp. to Loma
Verde Rd. 25 123 27 30 22-31 83%
18 Louis Rd. Loma Verde Ave. to
Charleston Rd. 25 122 22 25 17-26 92%
19 N. California
Ave.

Embarcadero Rd. to
Middlefield Rd. 25 100 26 29 22-31 88%
20 Park Blvd. California Ave. to
Lambert Ave. 25 115 25 29 19-28 72%
21 Quarry Rd. El Camino Real to
Campus Dr. 25 164 29 33 24-33 83%
22 Middlefield Rd. University Ave. to
Northern City Limits 25 176 29 32 25-34 89%

15 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits
Existing
Speed
Limit
(mph)
No.

Speed
Data
Collected
Median
(mph)
85th
Percentile
(mph)
10-
Mile
Pace
(mph)
Percent
w/in
Pace
23 Porter Dr. Page Mill Rd. to
Hillview Ave. 25 106 26 31 20-29 76%

16 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 6: Average Daily Traffic Volumes
No. Street Survey
Limits Direction Roadway
Classification
No. of
Lanes
Average Daily Traffic
Volumes

NB/EB SB/WB
Two
Way
Total
1 Alma St.

El Camino
Real to
University
Ave.

NB/SB Arterial 2 5,322 6,961 12,283
2 Charleston
Rd.

Fabian Way
to Southern
City Limits
EB/WB Arterial 4 11,513 3,997 15,510
3 Embarcadero
Rd.

El Camino
Real to Alma
St.

Overcrossing
EB/WB Arterial 4 12,584 11,388 23,972
4 Fabian Way
Charleston
Rd. to W.

Bayshore Rd.

NB/SB Local/Collector 4 3,037 2,870 5,907
5 Hanover St.

Page Mill Rd.
to Hillview
Ave.

NB/SB/EB/WB Local/Collector 2 3,610 2,914 6,524
6 Hillview Ave.

Hanover St.
to Foothill
Exp.

NB/SB/EB/WB Local/Collector 2 2,308 3,054 5,362
7 Middlefield
Rd.

University
Ave. to
Embarcadero
Rd.

NB/SB Residential
Arterial 2- to 4 3,528 3,132 6,660
8 San Antonio
Rd.

Alma St. to
Middlefield
Rd.

EB/WB Arterial 4 14,728 16,705 31,433
9 San Antonio
Rd.

Middlefield
Rd. to
Charleston
Rd.

EB/WB Arterial 4 11,838 13,311 25,149
10 W. Bayshore
Rd.

Loma Verde
Ave. to
Fabian Way
NB/SB Local/Collector 2 2,323 2,151 4,474
11 Charleston
Rd.

El Camino
Real to Alma
St.

EB/WB Residential
Arterial 4 6,624 6,208 12,832
12 Charleston
Rd.

Alma St. to
Middlefield
Rd.

EB/WB Residential
Arterial 2- to 4 5,392 4,360 9,752
13 Charleston
Rd.

Middlefield
Rd. to Fabian
Way
EB/WB Residential
Arterial 2 6,479 5,361 11,840

17 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey
Limits Direction Roadway
Classification
No. of
Lanes
Average Daily Traffic
Volumes

NB/EB SB/WB
Two
Way
Total
14 Deer Creek
Rd.

Page Mill Rd.
to
Arastradero
Rd.

NB/SB Local/Collector 2 2,319 1,989 4,308
15 El Camino
Way
Los Robles
Ave. to
Maybell Ave.

NB/SB Local/Collector 2 1,654 1,811 3,465
16 Hansen Way
El Camino
Real to Page
Mill Exp.

NB/SB/EB/WB Local/Collector 2 1,687 1,577 3,264
17 Louis Rd.

Oregon Exp.
to Loma
Verde Rd.

NB/SB Local/Collector 2 1,194 1,118 2,312
18 Louis Rd.

Loma Verde
Ave. to
Charleston
Rd.

NB/SB Local/Collector 2 1,145 932 2,077
19 N. California
Ave.

Embarcadero
Rd. to
Middlefield
Rd.

EB/WB Local/Collector 2 1,189 946 2,135
20 Park Blvd.

California
Ave. to
Lambert Ave.

NB/SB Local/Collector 2 2,009 1,428 3,437
21 Quarry Rd.

El Camino
Real to
Campus Dr.

EB/WB Local/Collector 4 8,366 7,345 15,711
22 Middlefield
Rd.

University
Ave. to
Northern
City Limits
NB/SB Residential
Arterial 2 7,200 7,176 14,376
23 Porter Dr.

Page Mill Rd.
to Hillview
Ave.

NB/SB/EB/WB Local/Collector 2 991 1,018 2,009

1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROAD

EMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
Survey Segments
Segments
Roads
City of
Segment ID
Daily Traffic Count
City of Palo Alto
XX
TJKM Transportation Consultants | 05/2024
0 0.5 1 0.25
Miles
Figure 4: Daily Traffic Count
XXXX
6,961
2,151
6,208
2,870
16,705
4,360
5,361
1,989
1,118
932
946
1,428
7,345
7,176
1,018
1,811
1,577
3,997
13,311
3,132
2,914
3,054
11,388

19 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

2.4 Traffic Collision Data
Collisions reported at study segments were obtained from the Statewide Integrated Traffic Records System (SWITRS) database for a period of five years from January 2019 to December 2021. Collision rates are a significant factor in determining the appropriate speed limits.

Table 7 summarizes the type and the total number of collisions for all study segments. Table 8 and Figure 5 summarize the collision rate s for the study segments in comparison with the statewide averages.

Additional collision data is available in Appendix B of this report.

Definitions for Collision Types: The types of collisions and their definitions are defined by CHP and are listed below:

Head-On: Two motor vehicles, approaching from oppos ite directions, make direct contact. For example, the front of one vehicle collides with the front of another, or prior to impact, one vehicle skids sideways, causing the side of the skidding vehicle to collide with the front of the other.

Sideswipe: One motor vehicle strikes the side of another with a glancing blow. For example, two vehicles are proceeding in the same direction or from opposite directions, and the side of one vehicle strikes the side of the other.

Rear End: Two motor vehicles, traveling in the same direction, make direct contact. For example, the front of one vehicle strikes the rear of another vehicle, or Vehicle #1 approaches Vehicle #2 from the rear and skids sideways during a braking action, causing the side of Vehicle #1 to strike the rear of Vehicle #2.

Broadside: One motor vehicle strikes another vehicle at an angle greater than that of a sideswipe.

Hit Object: A motor vehicle strikes a fixed object or other object.

Overturned: A motor vehicle overturns and no prior collision or hitting an object caused the overturning.

This would include a motorcyclist losing control, causing the vehicle to lie down on its side.

Auto/Ped: A vehicle strikes a pedestrian.

Other: A collision not covered in the preceding elements. This entry shall be explained in the narrative, such as a vehicle involved with - a bicycle, train, or animal; an automobile fire; passengers falling or jumping from a vehicle; a vehicle backing; a bicycle involved with a pedestrian or another bicycle, etc.

20 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 7: Collision History Summary (Jan. 2019 – Dec. 2021) No. Street Survey Limits
Total No.
of
Collisions
Collision Type Collision Severity
Head-
On Sideswipe Rear
End Broadside Hit
Object Overturned Auto/Ped Other Fatal Severe
Injury
Other
Visible
Injury
Injury:

Complaint
of Pain
Property
Damage
Only
1 Alma St.

El Camino
Real to
University
Ave.
18 1 0 7 8 2 0 0 0 0 1 6 11 0
2 Charleston
Rd.

Fabian Way
to Southern
City Limits
6 1 0 2 3 0 0 0 0 0 0 2 4 0
3 Embarcadero
Rd.

El Camino
Real to Alma
St.

Overcrossing
16 2 1 7 4 0 0 0 2 0 0 7 9 0
4 Fabian Way
Charleston
Rd. to W.

Bayshore Rd.
10 0 0 3 6 1 0 0 0 0 0 6 4 0
5 Hanover St.

Page Mill Rd.
to Hillview
Ave.
6 1 0 2 1 0 0 0 2 0 0 3 3 0
6 Hillview Ave.

Hanover St.
to Foothill
Exp.
8 1 1 2 4 0 0 0 0 0 1 4 3 0
7 Middlefield
Rd.

University
Ave. to
Embarcadero
Rd.
80 6 1 12 55 0 0 4 2 0 0 31 49 0
8 San Antonio
Rd.

Alma St. to
Middlefield
Rd.
12 0 0 3 4 2 1 1 1 0 0 6 6 0
9 San Antonio
Rd.

Middlefield
Rd. to 36 1 4 10 13 3 1 1 3 0 0 16 20 0

21 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits
Total No.
of
Collisions
Collision Type Collision Severity
Head-
On Sideswipe Rear
End Broadside Hit
Object Overturned Auto/Ped Other Fatal Severe
Injury
Other
Visible
Injury
Injury:

Complaint
of Pain
Property
Damage
Only
Charleston
Rd.
10 W. Bayshore
Rd.

Loma Verde
Ave. to
Fabian Way
1 0 0 0 1 0 0 0 0 0 0 1 0 0
11 Charleston
Rd.

El Camino
Real to Alma
St.
5 0 0 3 0 1 0 0 1 0 0 2 3 0
12 Charleston
Rd.

Alma St. to
Middlefield
Rd.
7 1 1 3 0 1 0 1 0 0 0 3 4 0
13 Charleston
Rd.

Middlefield
Rd. to Fabian
Way
9 1 1 2 3 0 0 2 0 0 0 3 6 0
14 Deer Creek
Rd.

Page Mill Rd.
to
Arastradero
Rd.
8 0 0 4 2 1 0 1 0 0 1 3 4 0
15 El Camino
Way
Los Robles
Ave. to
Maybell Ave.
0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 Hansen Way
El Camino
Real to Page
Mill Exp.
15 0 1 11 3 0 0 0 0 1 0 4 10 0
17 Louis Rd.

Oregon Exp.
to Loma
Verde Rd.
17 2 3 6 4 0 0 1 1 0 1 9 7 0
18 Louis Rd.

Loma Verde
Ave. to
Charleston
Rd.
11 0 1 7 1 0 0 1 1 0 0 4 7 0

22 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits
Total No.
of
Collisions
Collision Type Collision Severity
Head-
On Sideswipe Rear
End Broadside Hit
Object Overturned Auto/Ped Other Fatal Severe
Injury
Other
Visible
Injury
Injury:

Complaint
of Pain
Property
Damage
Only
19 N. California
Ave.

Embarcadero
Rd. to
Middlefield
Rd.
8 2 2 2 1 1 0 0 0 0 1 3 4 0
20 Park Blvd.

California
Ave. to
Lambert Ave.
3 0 0 0 1 0 0 1 1 0 0 3 0 0
21 Quarry Rd.

El Camino
Real to
Campus Dr.
35 0 1 13 10 2 1 8 0 0 3 11 21 0
22 Middlefield
Rd.

University
Ave. to
Northern
City Limits
11 1 0 7 3 0 0 0 0 0 0 4 7 0
23 Porter Dr.

Page Mill Rd.
to Hillview
Ave.
2 0 1 0 1 0 0 0 0 0 0 1 1 0

23 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 8: Collision History Comparison with Statewide Averages No. Street Survey Limits
No. of Collisions
(Jan 1, 2019 - Dec
31, 2021)
Collision
Rate
State Avg.

Collision
Rate (2021)
Less than
State
Average?
1 Alma St. El Camino Real to
University Ave. 18 2.82 1.18 No
2 Charleston Rd.

Fabian Way to
Southern City
Limits
6 1.06 1.46 Yes
3 Embarcadero Rd.

El Camino Real to
Alma St.

Overcrossing
16 2.52 1.46 No
4 Fabian Way Charleston Rd. to
W. Bayshore Rd. 10 2.70 1.46 No
5 Hanover St. Page Mill Rd. to
Hillview Ave. 6 1.12 1.18 Yes
6 Hillview Ave. Hanover St. to
Foothill Exp. 8 3.66 1.18 No
7 Middlefield Rd. University Ave. to
Embarcadero Rd. 80 11.44 1.18 No
8 San Antonio Rd. Alma St. to
Middlefield Rd. 12 0.57 1.10 Yes
9 San Antonio Rd. Middlefield Rd. to
Charleston Rd. 36 3.25 1.10 No
10 W. Bayshore Rd. Loma Verde Ave.
to Fabian Way 1 0.35 1.18 Yes
11 Charleston Rd. El Camino Real to
Alma St. 5 0.88 1.46 Yes
12 Charleston Rd. Alma St. to
Middlefield Rd. 7 1.12 1.18 Yes
13 Charleston Rd. Middlefield Rd. to
Fabian Way 9 1.93 1.18 No
14 Deer Creek Rd. Page Mill Rd. to
Arastradero Rd. 8 2.42 1.18 No
15 El Camino Way Los Robles Ave. to
Maybell Ave. 0 0.00 1.18 Yes
16 Hansen Way El Camino Real to
Page Mill Exp. 15 7.35 1.18 No
17 Louis Rd. Oregon Exp. to
Loma Verde Rd. 17 8.22 1.18 No
18 Louis Rd. Loma Verde Ave.
to Charleston Rd. 11 4.58 1.18 No
19 N. California Ave. Embarcadero Rd.
to Middlefield Rd. 8 4.41 1.18 No
20 Park Blvd. California Ave. to
Lambert Ave. 3 1.38 1.18 No
21 Quarry Rd. El Camino Real to
Campus Dr. 35 2.74 1.10 No

24 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits
No. of Collisions
(Jan 1, 2019 - Dec
31, 2021)
Collision
Rate
State Avg.

Collision
Rate (2021)
Less than
State
Average?
22 Middlefield Rd.

University Ave. to
Northern City
Limits
11 1.83 1.18 No
23 Porter Dr. Page Mill Rd. to
Hillview Ave. 2 2.23 1.18 No

1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
Survey Segments
Collision Rate Below
Statewide Average
Collision Rate Above
Statewide Average
Roads
Segment ID
City of Palo Alto
XX
TJKM Transportation Consultants | 05/2024
0 0.5 10.25
Miles
Figure 5: Collision Analysis

26 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

3.0 SPEED LIMIT RECOMMENDATIONS
The setting of speed limits requires a rational and defensible procedure to maintain the confidence of the public and legal systems. Speed limit determinations rely on the premise that a reasonable speed limit is one that conforms to the actual behavior of the majority of drivers; o ne will be able to select a speed limit that is both reasonable and effective by measuring drivers' speeds.

The speed zoning section of the CA MUTCD was changed in 2004 to require rounding the 85th percentile to the nearest 5 mph increment rather than to the lower 5 mph increment in order to better conform to the standards established in the Federal Highway Administration’s (FHWA’s) Manual on Uniform Traffic Control Devices (MUTCD).

This specific guideline revision resulted in raising certain street speed limits and had become a challenge to state and local jurisdictions.

In 2007, the California Traffic Control Devices Committee (CTCDC) ruled to approve a language change in the CA MUTCD to clarify how local speed limits should be set. Caltrans ultimately is sued a Traffic Operations Policy Directive (No. 09 -04), effective July 1, 2009, which clearly defined these changes and incorporated new requirements into the CA MUTCD. The changes are summarized below:
• Posted speed limits will be set "rounded to the nearest" 5 mph increment of the 85th percentile speed. • Jurisdictions can lower this speed by an additional 5 mph based on and justified by conditions and factors cited in the California Vehicle Code.

Studies of the effects of establishing, raising, and lowering speed limits include federal studies such as FHWA-RD- 92-084 and FHWA -RD-98-154. These studies demonstrate that the most effective attribute in establishing the speed limit is to determine the 85th percentile speed and to set the posted speed close to that value. The empirical data in these studies demonstrates that setting the speed limit too high or too low can increase collisions. Speed limits that are set near the 85th percentile speed of free flowing traffic are safer and produce less variance in vehicle speeds. Because of this, the 85th percentile is used to establish the upper limit of operating speeds that are considered reasonable and prudent. In addition, setting the speed limit arbitrarily low often makes violators of a disproportionate number of drivers, does not facilitate the orderly movement of traffic, and requires constant enforcement to maintain compliance.

The 2014 Edition of the CA MUTCD requires as a standard that a speed limit shall be established at the nearest 5 mph increment of the 85 th percentile speed, except that the posted speed may be reduced by 5 mph from the nearest 5 mph increment of the 85th percentile speed in compliance with CVC Sections 627 and CVC 22358.5.

According to CVC 21400, for cases in which the nearest 5 mph increm ent of the 85th percentile speed would require rounding up, the speed limit may be rounded down to the nearest 5 mph increment below the 85th percentile speed if no further reduction is used. The following examples are provided to explain the application of these speed limit criteria:
• If the 85th percentile speed in a speed survey for a location was 37 mph, then the speed limit would be established at 35 mph since it is the closest 5 mph increment to the 37 mph speed. The 35 mph established

27 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
speed limit can be reduced by additional 5 mph to 30 mph if the conditions and justification for using this lower speed limit are documented in the E&TS and approved by a registered Civil or Traffic Engineer; and • If the 85th percentile speed in a speed survey for a locat ion was 33 mph, then the speed limit would be established at 35 mph since it is the closest 5 mph increment to the 33 mph speed. The 35 mph established speed limit can be reduced by 5 mph to 30 mph if the conditions and justification for using this lower speed limit are documented in the E&TS and are approved by a registered Civil or Traffic Engineer.

Section 2B.13 of the 2014 CA MUTCD further states that justification for reducing speed limits can be based on residential density, pedestrian/bicyclist safet y and other factors not readily apparent to drivers but essential to meet the traffic safety needs of the community. The following factors may be considered to adjust and determine the final speed limits:
• Road characteristics, shoulder condition, grade, alignment, and sight distance • 10 mph pace speed (a 10 mile range in which the highest number of data is recorded) • Roadside development and environment
• Parking practices and bicycle/pedestrian activity
• Reported crash experience for at least a 12-month period On October 8, 2021, the procedure for establishing local speed limits was changed once again with Assembly Bill No. 43 (AB 43) being signed into law (and later clarified by Assembly Bill 1938 in 2022) . Whereas the previous procedure required no further act ion be taken after rounding down to the nearest 5 mph increment below the 85 th percentile speed, AB 43 allows a local authority to use an additional 5 mph reduction if a portion of highway has been designated as a “safety corridor” as is defined by Caltrans in the CA MUTCD or if a portion of highway is adjacent to any land or facility that generates high concentrations of bicyclists or pedestrians, particularly those from vulnerable groups such as children, seniors, persons with disabilities, and the unhous ed. The procedure is shown in Figure 6.

The existing speed limit may also be retained if it was established in a previous E&TS and if a registered traffic engineer has determined that no additional general purpose lanes have been added to the portion of highway since completion of the previous E&TS.

28 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Figure 6: Illustration of Procedure of Rounding and Speed Limit Reductions on Local Agency Roadways

Source: 2014 CA MUTCD, Revision 7, Table 2B-104(CA)
The guidelines from the California Manual for Setting Speed Limits published by Caltrans (Rev. January 2024) were followed in this study. The speed limit recommendations are proposed for 17 street segments in the study based on the above discussed guidelines and speed data analysis. The speed limit for each study segment was recommended after determining the average speed, the 85th percentile speed, the pace speed, and considering other significant factors such as existing land use, roadway design characteristics and collision rates. Appendix A presents the recommended speed limit certifications of the traffic survey analyses, which include prevailing speed data, collision history, traffic factors, and roadway conditions. The recomm ended speed limit for each street segment is also shown with a comment on the rationale for the recommendation. Table 9 tabulates the recommended speed limits. Figure 7 illustrates the segments where speed limit changes are recommended.

Figure 8 illustrates the recommended speed limits at the respective study segments. 30 35
40 45
50 55
85th-Percentile
"Critical Speed"
(mph)
Rounding to nearest
5 mph increment
(CVC 22358.6(a))
If rounding to
nearest is up, may
round down (CVC
22358.6(c))
If rounding to
nearest is down,
may additionally
lower by 5 mph
(CVC 22358.6(b))
If safety corridor or
adjacent to high
concentration of
bicyclists &
pedestrians, may
additionally lower
by 5 mph (CVC
22358.7)
Speed Limit
Condition of Rounding

47.5-50.0 mph 45.1-47.4 mph
Round down
initially
Round up
in
itially

29 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
Table 9: Recommended Speed Limits Summary
No. Street Survey Limits
Existing
Speed
(mph)
85th
Percentile
Speed
(mph)
Recommended
Speed
(mph)
Changes to Existing
Speed Limit
(mph)
1 Alma St. El Camino Real to
University Ave.
25 32 25 0
2 Charleston Rd. Fabian Way to
Southern City
Limits
35 39 35 0
3 Embarcadero
Rd.

El Camino Real to
Alma St.

Overcrossing
25 35 25 0
4 Fabian Way Charleston Rd. to
W. Bayshore Rd.
30 42 30 0
5 Hanover St. Page Mill Rd. to
Hillview Ave.
30 33 30 0
6 Hillview Ave. Hanover St. to
Foothill Exp.
30 32 30 0
7 Middlefield Rd. University Ave. to
Embarcadero Rd.
25 33 25 0
8 San Antonio Rd. Alma St. to
Middlefield Rd.
35 44 35 0
9 San Antonio Rd. Middlefield Rd.
to Charleston Rd.
35 39 35 0
10 W. Bayshore Rd. Loma Verde Ave.
to Fabian Way
35 45 35 0
11 Charleston Rd. El Camino Real to
Alma St.
25 36 25 0
12 Charleston Rd. Alma St. to
Middlefield Rd.
25 35 25 0
13 Charleston Rd. Middlefield Rd.
to Fabian Way
25 37 25 0
14 Deer Creek Rd. Page Mill Rd. to
Arastradero Rd.
40 38 35 -5
15 El Camino Way Los Robles Ave.
to Maybell Ave.
25 28 25 0
16 Hansen Way El Camino Real to
Page Mill Exp.
30 35 30 0
17 Louis Rd. Oregon Exp. to
Loma Verde Rd.
25 30 25 0
18 Louis Rd. Loma Verde Ave.
to Charleston Rd.
25 25 25 0
19 N. California
Ave.

Embarcadero Rd.
to Middlefield
Rd.
25 29 25 0
20 Park Blvd. California Ave. to
Lambert Ave.
25 29 25 0
21 Quarry Rd. El Camino Real to
Campus Dr.
25 33 25 0

30 ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO
No. Street Survey Limits
Existing
Speed
(mph)
85th
Percentile
Speed
(mph)
Recommended
Speed
(mph)
Changes to Existing
Speed Limit
(mph)
22 Middlefield Rd. University Ave. to
Northern City
Limits
25 32 25 0
23 Porter Dr. Page Mill Rd. to
Hillview Ave.
25 31 25 0

14 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROADEMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
Survey Segments
Reduced by 5 mph
Increased by 5mph
Not Applicable
Roads
Segment ID
City of Palo Alto
XX
TJKM Transportation Consultants | 05/2024
0 0.5 10.25
Miles
Figure 7: Segment Speed Limit Changes
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 MIDDLEFIELD ROAD

EL CAMINO REAL

LOUIS ROAD
HY 101 SOUTH

ALMA STREET

WAVERLEY STREET
HY 101 NORTH

PAGE MILL ROAD

LINCOLN AVENUE

OREGON EXPRESSWAY

UNIVERSITY AVENUE

PARK BOULEVARD

MIRANDA AVENUE

LOMA VERDE AVENUE

GREER ROAD

RAMONA STREET

LOS ROBLES AVENUE

HILLVIEW AVENUE

CALIFORNIA AVENUE

BARRON AVENUE

MAYBELL AVENUE

NORTH CALIFORNIA AVENUE

QUARRY ROAD

FERNE AVENUE
LANE 66

GENG ROAD

MIRANDA AVENUE

ALMA STREET

EMBARCADERO ROADEMBARCADERO ROADEMBARCADERO ROAD

STANFORD

LOS ALTOS

LA HONDA

MENLO PARK

MOUNTAIN VIEW

EAST PALO ALTO
TJKM Transportation Consultants | 05/2024
0 0.5 10.25
Miles
Figure 8: Recommended Speed Limits
LEGEND
Roads
Segment IDXX
Recommended Speed Limits
25 mph
30 mph
35 mph
City of Palo Alto

ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

Appendix A: Recommended Speed Limit
Certifications and Supporting Data (Speed
Survey Collection Forms and Average Daily
Traffic Volumes)

Segment #1
Street: Alma St.

Limits: El Camino Real to University Ave.

Direction: NB/SB
Date /Location of Survey 9/20/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 207
85th Percentile (mph) 32
10 mph Pace 24-33
Percent in Pace 86%
Average Daily Traffic (ADT) 12,283
Length of Segment (mi.) 0.48
Street Classification Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 18
Accident Rate (Acc/MVM) 2.82
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:

Date:

Nayan Amin, TE
Existing Speed Limit: 25
Signed:

Title:

Commercial and residential along northern edge. Railroad ROW and station along southern edge.

An undivided 2-lane arterial. Double yellow line serves as median. Concrete sidewalks along most of northern edge. Some of southern edge has concrete sidewalks. Class III sharrows west of Palo Alto Ave. Class II bike lanes east of Palo Alto Ave. Signals at Lyfton Ave. and El Camino Real. Stop control at rest of intersections. Left-turn storage bays and right-turn storage bays present at some intersections. Marked crosswalks present at most intersections. On-street parking present on northern edge from Lyfton Ave. to Palo Alto Ave. No school zone present. Horizontal curve at Palo Alto Ave. Slight vertical curve at Palo Alto Ave. Driveway density high on northern edge and low on southern edge.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 32 --> 30 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 30 --> 25
No
Recommended Speed Limit: 25
D. Roadway Conditions
Speed Limit Change?
C. Collision History
President, TJKM Transportation Consultants
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 20
21 1
22 4
23 4
24 8
25 13
26 22
27 26
28 23
29 27
30 20
31 14
32 15
33 11
34 5
35 5
36 3
37 3
38 1
39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 207 18 - 39 29 mph 32 mph 24 - 33 179 86% 4% / 10 9% / 18

SPEED PARAMETERS
#1 - Alma St Bet. Everett Ave & Hawthorne Ave
City of Palo Alto
Eastbound & Westbound Spot Speeds
09:00-09:45
9/20/2023
Project #: 23-080265-001
0 5 10 15 20 25 30
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 20
21 1
22 3
23 2
24 4
25 5
26 10
27 11
28 11
29 12
30 9
31 7
32 9
33 7
34 3
35 2
36 1
37 2
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 18 - 37 29 mph 32 mph 24 - 33 85 85% 7% / 7 8% / 8

SPEED PARAMETERS
#1 - Alma St Bet. Everett Ave & Hawthorne Ave
City of Palo Alto
Eastbound Spot Speeds
09:00-09:45
9/20/2023
Project #: 23-080265-001
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 2
24 4
25 8
26 12
27 15
28 12
29 15
30 11
31 7
32 6
33 4
34 2
35 3
36 2
37 1
38 1
39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 107 22 - 39 28 mph 32 mph 24 - 33 94 88% 2% / 3 10% / 10

SPEED PARAMETERS
#1 - Alma St Bet. Everett Ave & Hawthorne Ave
City of Palo Alto
Westbound Spot Speeds
09:00-09:45
9/20/2023
Project #: 23-080265-001
02468 1 0 1 2 1 4 1 6
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_001
NB SB EB WB Total
0 0 5,322 6,961 12,283

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 91 0 19 12:00 69 120 189 00:00 01:00 17 25 42
00:15 24 6 12:15 93 116 209 01:00 02:00 11 11 22
00:30 14 5 12:30 75 124 199 02:00 03:00 10 15 25
00:45 57 12 12:45 109 120 229 03:00 04:00 71 5 22
01:00 34 7 13:00 77 128 205 04:00 05:00 12 24 36
01:15 33 6 13:15 88 120 208 05:00 06:00 41 36 77
01:30 13 4 13:30 89 131 220 06:00 07:00 84 106 190
01:45 41 5 13:45 91 132 223 07:00 08:00 246 398 644
02:00 23 5 14:00 85 137 222 08:00 09:00 371 549 920
02:15 35 8 14:15 107 141 248 09:00 10:00 348 411 759
02:30 24 6 14:30 109 135 244 10:00 11:00 294 413 707
02:45 33 6 14:45 112 131 243 11:00 12:00 322 468 790
03:00 32 5 15:00 116 129 245 12:00 13:00 346 480 826
03:15 26 8 15:15 121 133 254 13:00 14:00 345 511 856
03:30 13 4 15:30 126 131 257 14:00 15:00 413 544 957
03:45 14 5 15:45 130 134 264 15:00 16:00 493 527 1020
04:00 15 6 16:00 111 134 245 16:00 17:00 449 507 956
04:15 54 9 16:15 118 126 244 17:00 18:00 432 510 942
04:30 38 11 16:30 106 118 224 18:00 19:00 353 464 817
04:45 37 10 16:45 114 129 243 19:00 20:00 293 326 619
05:00 96 15 17:00 112 131 243 20:00 21:00 188 307 495
05:15 47 11 17:15 109 126 235 21:00 22:00 137 177 314
05:30 13 8 21 17:30 106 125 231 22:00 23:00 78 92 170
05:45 15 15 30 17:45 105 128 233 23:0 0 00:00 32 45 77
06:00 17 13 30 18:00 87 129 216
06:15 10 15 25 18:15 98 125 223 NB SB EB WB TOTA L
06:30 22 37 59 18:30 85 110 195 00:00 to 12:00
06:45 35 41 76 18:45 83 100 183 1763 2471 4234
07:00 38 69 107 19:00 87 103 190 8:15 7:45 7:45
07:15 60 80 140 19:15 81 92 173 380 559 933
07:30 61 114 175 19:30 54 75 129 0.856 0.884 0.952
07:45 87 135 222 19:45 71 56 127
08:00 87 158 245 20:00 51 89 140 12:00 to 00:00
08:15 89 139 228 20:15 49 81 130 3559 4490 8049
08:30 111 127 238 20:30 58 72 130 15:00 13:45 15:00
08:45 84 125 209 20:45 30 65 95 493 545 1020
09:00 96 104 200 21:00 40 53 93 0.948 0.966 0.966
09:15 89 112 201 21:15 31 43 74
09:30 88 101 189 21:30 32 40 72 07:00 to 09:00
09:45 75 94 169 21:45 34 41 75 617 947 1564
10:00 76 101 177 22:00 17 34 51 7:45 7:45 7:45
10:15 67 86 153 22:15 27 23 50 374 559 933
10:30 67 115 182 22:30 21 18 39 0.842 0.884 0.952
10:45 84 111 195 22:45 13 17 30
11:00 74 108 182 23:00 10 18 28 16:00 to 18:00
11:15 85 119 204 23:15 71 2 19 881 1017 1898
11:30 72 119 191 23:30 76 13 16:15 16:45 16:00
11:45 91 122 213 23:45 89 17 450 511 956
TOTALS 0 0 1763 2471 4234 TOTALS 0 0 3559 4490 8049 0.953 0.975 0.976 SPLIT % 0% 0% 42% 58% 34% SPLIT % 0% 0% 44% 56% 66%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#1 ‐ Alma St Bet. Everett Ave & Hawthorne Ave
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 100
200
300
400
500
600
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #2
Street: Charleston Rd.

Limits: Fabian Way to Southern City Limits
Direction: EB/WB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 35
# Speed Data Collected 166
85th Percentile (mph) 39
10 mph Pace 30-39
Percent in Pace 79%
Average Daily Traffic (ADT) 15,510
Length of Segment (mi.) 0.33
Street Classification Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 6
Accident Rate (Acc/MVM) 1.06
Statewide Average Accident Rate 1.46
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial on both sides.

An undivided 4-lane arterial. Double yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides from San Antonio Rd. to eastern City limit. Signals at Fabian Wy. and San Antonio Rd. Stop control at rest of intersections. Left-turn storage bays and right-turn storage bays present at some intersections. Marked crosswalks present at most intersections. No on-street parking permitted on either side. No school zone present. No horizontal or vertical curves present. High on southern edge and moderate on northern edge.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 39 --> 40 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 40 --> 35
Speed Limit Change? No
Existing Speed Limit: 35 Recommended Speed Limit: 35
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 1
24 25
26 1
27 3
28 6
29 7
30 11
31 10
32 18
33 13
34 15
35 14
36 13
37 14
38 14
39 9
40 10
41 4
42 2
43 1
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 166 23 - 43 34 mph 39 mph 30 - 39 131 79% 10% / 18 11% / 17

SPEED PARAMETERS
#2 - Charleston Rd Bet. Industrial Ave & Commercial St
City of Palo Alto
Eastbound & Westbound Spot Speeds
10:10-11:10
9/21/2023
Project #: 23-080265-002
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 1
28 2
29 1
30 3
31 3
32 7
33 6
34 7
35 9
36 10
37 11
38 10
39 7
40 7
41 3
42 1
43 1
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 89 27 - 43 36 mph 39 mph 31 - 40 77 87% 7% / 7 6% / 5

SPEED PARAMETERS
#2 - Charleston Rd Bet. Industrial Ave & Commercial St
City of Palo Alto
Eastbound Spot Speeds
10:10-11:10
9/21/2023
Project #: 23-080265-002
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 1
24 25
26 1
27 2
28 4
29 6
30 8
31 7
32 11
33 7
34 8
35 5
36 3
37 3
38 4
39 2
40 3
41 1
42 1
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 77 23 - 42 32 mph 37 mph 28 - 37 62 81% 5% / 4 15% / 11

SPEED PARAMETERS
#2 - Charleston Rd Bet. Industrial Ave & Commercial St
City of Palo Alto
Westbound Spot Speeds
10:10-11:10
9/21/2023
Project #: 23-080265-002
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_002
NB SB EB WB Total
0 0 11,513 3,997 15,510

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 27 6 33 12:00 184 88 272 00:00 01:00 56 27 83
00:15 13 8 21 12:15 192 96 288 01:00 02:00 36 13 49
00:30 12 7 19 12:30 209 76 285 02:00 03:00 16 10 26
00:45 46 10 12:45 158 86 244 03:00 04:00 21 10 31
01:00 11 4 15 13:00 165 75 240 04:00 05:00 35 17 52
01:15 13 4 17 13:15 167 74 241 05:00 06:00 94 48 142
01:30 81 9 13:30 175 86 261 06:00 07:00 183 74 257
01:45 44 8 13:45 184 73 257 07:00 08:00 434 177 611
02:00 42 6 14:00 202 60 262 08:00 09:00 910 208 1118
02:15 51 6 14:15 194 68 262 09:00 10:00 868 202 1070
02:30 43 7 14:30 217 80 297 10:00 11:00 631 197 828
02:45 34 7 14:45 216 70 286 11:00 12:00 720 287 1007
03:00 14 5 15:00 225 71 296 12:00 13:00 743 346 1089
03:15 61 7 15:15 234 83 317 13:00 14:00 691 308 999
03:30 43 7 15:30 249 72 321 14:00 15:00 829 278 1107
03:45 10 2 12 15:45 230 76 306 15:00 16:00 938 302 1240 04:00 44 8 16:00 253 77 330 16:00 17:00 980 316 1296
04:15 81 9 16:15 238 68 306 17:00 18:00 1033 381 1414
04:30 11 4 15 16:30 242 84 326 18:00 19:00 845 256 1101 04:45 12 8 20 16:45 247 87 334 19:00 20:00 597 225 822
05:00 15 9 24 17:00 292 93 385 20:00 21:00 379 168 547
05:15 23 7 30 17:15 250 101 351 21:00 22:00 196 84 280
05:30 27 11 38 17:30 247 110 357 22:00 23:00 156 35 191 05:45 29 21 50 17:45 244 77 321 23:0 0 00:00 122 28 150 06:00 35 17 52 18:00 241 72 313
06:15 42 10 52 18:15 205 53 258 NB SB EB WB TOTA L
06:30 36 23 59 18:30 201 57 258 00:00 to 12:00
06:45 70 24 94 18:45 198 74 272 4004 1270 5274
07:00 72 31 103 19:00 191 42 233 8:15 11:00 8:15
07:15 96 33 129 19:15 157 44 201 952 287 1151
07:30 145 47 192 19:30 129 67 196 0.926 0.844 0.919
07:45 121 66 187 19:45 120 72 192
08:00 215 56 271 20:00 103 61 164 12:00 to 00:00
08:15 244 69 313 20:15 104 42 146 7509 2727 10236
08:30 247 43 290 20:30 87 28 115 16:45 16:45 16:45
08:45 204 40 244 20:45 85 37 122 1036 391 1427
09:00 257 47 304 21:00 59 30 89 0.887 0.889 0.927
09:15 220 55 275 21:15 64 19 83
09:30 214 54 268 21:30 42 19 61 07:00 to 09:00
09:45 177 46 223 21:45 31 16 47 1344 385 1729
10:00 169 45 214 22:00 51 13 64 8:00 7:30 8:00
10:15 154 46 200 22:15 46 7 53 910 238 1118
10:30 152 56 208 22:30 35 7 42 0.921 0.862 0.893
10:45 156 50 206 22:45 24 8 32
11:00 170 72 242 23:00 43 13 56 16:00 to 18:00
11:15 189 61 250 23:15 34 7 41 2013 697 2710
11:30 178 69 247 23:30 28 3 31 16:45 16:45 16:45
11:45 183 85 268 23:45 17 5 22 1036 391 1427
TOTALS 0 0 4004 1270 5274 TOTALS 0 0 7509 2727 10236 0.887 0.889 0.927 SPLIT % 0% 0% 76% 24% 34% SPLIT % 0% 0% 73% 27% 66%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#2 ‐ Charleston Rd Bet. Industrial Ave & Commercial St
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 200
400
600
800
1000
1200
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #3
Street: Embarcadero Rd.

Limits: El Camino Real to Alma St. Overcrossing
Direction: EB/WB
Date /Location of Survey 10/17/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 201
85th Percentile (mph) 35
10 mph Pace 27-36
Percent in Pace 79%
Average Daily Traffic (ADT) 23,972
Length of Segment (mi.) 0.24
Street Classification Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 16
Accident Rate (Acc/MVM) 2.52
Statewide Average Accident Rate 1.46
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial mall on the northern side. Palo Alto High School on the southern side.

An undivided 4-lane arterial. Double yellow line serves as median. Concrete sidewalks present on both sides. No bike facilities present. All intersections signalized. Left-turn storage bays and right-turn storage bays present at intersections on survey segment and side streets. Marked crosswalks present at all intersections. Midblock crosswalk present near Palo Alto High School. No on- street parking permitted on either side. School zone is present. Slight horizontal curves and gentle vertical curves present. Negative grade when approaching railroad ROW overpass. One driveway to the commercial mall on the northern side and one driveway to Palo Alto High School on the southern side. Roadway narrows to 3 lanes (two WB, one EB) due to limited clearance under Alma St. and railroad ROW overpass.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 35 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a high school, concrete sidewalks, bikeways, and marked crosswalks: 30 --> 25 Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: None Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 2
22 3
23 4
24 4
25 6
26 7
27 10
28 14
29 17
30 18
31 17
32 24
33 17
34 19
35 14
36 8
37 8
38 6
39 1
40 1
41 1
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 201 21 - 41 31 mph 35 mph 27 - 36 158 79% 12% / 26 9% / 17

SPEED PARAMETERS
#3 - Embarcadero Rd S/O Alma St
City of Palo Alto
Northbound & Southbound Spot Speeds
11:00-11:45
10/17/2023
Project #: 23-080265-003
0 5 10 15 20 25 30
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: None Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 1
24 2
25 3
26 2
27 4
28 7
29 8
30 7
31 8
32 13
33 10
34 13
35 9
36 6
37 5
38 3
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 101 23 - 38 32 mph 35 mph 28 - 37 86 85% 11% / 12 3% / 3

SPEED PARAMETERS
#3 - Embarcadero Rd S/O Alma St
City of Palo Alto
Northbound Spot Speeds
11:00-11:45
10/17/2023
Project #: 23-080265-003
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: None Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 2
22 3
23 3
24 2
25 3
26 5
27 6
28 7
29 9
30 11
31 9
32 11
33 7
34 6
35 5
36 2
37 3
38 3
39 1
40 1
41 1
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 21 - 41 30 mph 35 mph 26 - 35 76 76% 13% / 13 11% / 11

SPEED PARAMETERS
#3 - Embarcadero Rd S/O Alma St
City of Palo Alto
Southbound Spot Speeds
11:00-11:45
10/17/2023
Project #: 23-080265-003
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Wednesday City: Palo Alto
Date: 10/4/2023 Project #: CA23_080264_003
NB SB EB WB Total
12,584 11,388 0 0 23,972

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 14 11 25 12:00 192 196 388 00:00 01:00 71 43 114
00:15 25 17 42 12:15 183 188 371 01:00 02:00 68 20 88
00:30 20 7 27 12:30 178 221 399 02:00 03:00 51 21 72
00:45 12 8 20 12:45 196 254 450 03:00 04:00 30 47 77
01:00 18 4 22 13:00 190 204 394 04:00 05:00 39 117 156
01:15 13 4 17 13:15 192 163 355 05:00 06:00 40 291 331
01:30 24 8 32 13:30 229 176 405 06:00 07:00 155 715 870 01:45 13 4 17 13:45 198 203 401 07:00 08:00 506 839 1345 02:00 12 6 18 14:00 239 172 411 08:00 09:00 599 868 1467 02:15 10 7 17 14:15 232 212 444 09:00 10:00 563 777 1340 02:30 19 1 20 14:30 270 166 436 10:00 11:00 577 740 1317 02:45 10 7 17 14:45 258 200 458 11:00 12:00 662 753 1415 03:00 57 12 15:00 265 180 445 12:00 13:00 749 859 1608
03:15 77 14 15:15 268 223 491 13:00 14:00 809 746 1555
03:30 11 18 29 15:30 272 155 427 14:00 15:00 999 750 1749 03:45 71 5 22 15:45 286 191 477 15:00 16:00 1091 749 1840 04:00 92 2 31 16:00 288 165 453 16:00 17:00 1047 612 1659 04:15 83 6 44 16:15 243 136 379 17:00 18:00 1073 629 1702 04:30 17 33 50 16:30 245 145 390 18:00 19:00 867 710 1577 04:45 52 6 31 16:45 271 166 437 19:00 20:00 906 419 1325 05:00 72 8 35 17:00 271 173 444 20:00 21:00 621 250 871 05:15 10 87 97 17:15 290 149 439 21:00 22:00 548 190 738 05:30 11 147 158 17:30 281 154 435 22:00 23:00 277 165 442 05:45 12 29 41 17:45 231 153 384 23:0 0 00:00 236 78 314 06:00 15 70 85 18:00 225 166 391
06:15 28 196 224 18:15 239 212 451 NB SB EB WB TOTA L
06:30 42 215 257 18:30 204 191 395 00:00 to 12:00
06:45 70 234 304 18:45 199 141 340 3361 5231 8592
07:00 80 160 240 19:00 227 111 338 11:00 8:15 8:15
07:15 87 197 284 19:15 221 113 334 662 923 1528
07:30 176 195 371 19:30 215 109 324 0.974 0.901 0.858
07:45 163 287 450 19:45 243 86 329
08:00 145 170 315 20:00 144 55 199 12:00 to 00:00
08:15 125 194 319 20:15 164 70 234 9223 6157 15380
08:30 132 256 388 20:30 161 61 222 15:15 12:15 15:15
08:45 197 248 445 20:45 152 64 216 1114 867 1848
09:00 151 225 376 21:00 159 58 217 0.967 0.853 0.941
09:15 125 177 302 21:15 144 51 195
09:30 152 183 335 21:30 152 43 195 07:00 to 09:00
09:45 135 192 327 21:45 93 38 131 1105 1707 2812
10:00 132 208 340 22:00 78 31 109 7:30 7:45 7:45
10:15 150 186 336 22:15 72 47 119 609 907 1472
10:30 138 172 310 22:30 68 37 105 0.865 0.790 0.818
10:45 157 174 331 22:45 59 50 109
11:00 162 176 338 23:00 55 30 85 16:00 to 18:00
11:15 170 191 361 23:15 60 23 83 2120 1241 3361
11:30 164 185 349 23:30 86 15 101 16:45 16:45 16:45
11:45 166 201 367 23:45 35 10 45 1113 642 1755
TOTALS 3361 5231 0 0 8592 TOTALS 9223 6157 0 0 15380 0.959 0.928 0.988 SPLIT % 39% 61% 0% 0% 36% SPLIT % 60% 40% 0% 0% 64%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#3 ‐ Embarcadero Rd S/O Alma St
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #4
Street: Fabian Way
Limits: Charleston Rd. to W. Bayshore Rd.

Direction: NB/SB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 30
# Speed Data Collected 210
85th Percentile (mph) 42
10 mph Pace 31-40
Percent in Pace 70%
Average Daily Traffic (ADT) 5,907
Length of Segment (mi.) 0.57
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 10
Accident Rate (Acc/MVM) 2.70
Statewide Average Accident Rate 1.46
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial, office, and institutional uses on both sides.

An undivided 4-lane local/collector. Double yellow dotted line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signal at E. Charleston Rd. Side street stop control at remaining intersections. Left-turn storage bays and right-turn storage bays present at intersections with E. Charleston Rd. and Federation Wy. Marked crosswalks present at all intersections. Several midblock crosswalks present. On-street parking present on eastern side from south of E. Meadow Dr. to 180 feet south of Federation Way. School zone is present. Gentle horizontal curves on north and south ends of segment. Virtually no vertical curves. Driveway density high on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 42 --> 40 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 40 --> 35
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a high school, concrete sidewalks, Class II bike lanes, and marked crosswalks:
35 --> 30
Speed Limit Change? No
Existing Speed Limit: 30 Recommended Speed Limit: 30
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24 2
25 26 1
27 2
28 4
29 3
30 4
31 11
32 14
33 14
34 18
35 16
36 18
37 15
38 14
39 16
40 11
41 10
42 11
43 9
44 7
45 5
46 1
47 48 4
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 210 24 - 48 36 mph 42 mph 31 - 40 147 70% 7% / 16 23% / 47

SPEED PARAMETERS
#4 - Fabian Way Bet. E Meadow Dr & E Charleston Rd
City of Palo Alto
Northbound & Southbound Spot Speeds
13:00-13:55
9/21/2023
Project #: 23-080265-004
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24 1
25 26
27 1
28 2
29 3
30 2
31 6
32 5
33 6
34 8
35 6
36 8
37 7
38 7
39 9
40 4
41 6
42 5
43 5
44 6
45 2
46 1
47 48 2
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 102 24 - 48 37 mph 43 mph 31 - 40 66 65% 8% / 9 27% / 27

SPEED PARAMETERS
#4 - Fabian Way Bet. E Meadow Dr & E Charleston Rd
City of Palo Alto
Northbound Spot Speeds
13:00-13:55
9/21/2023
Project #: 23-080265-004
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24 1
25 26 1
27 1
28 2
29 30 2
31 5
32 9
33 8
34 10
35 10
36 10
37 8
38 7
39 7
40 7
41 4
42 6
43 4
44 1
45 3
46 47
48 2
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 108 24 - 48 36 mph 41 mph 31 - 40 81 75% 6% / 7 19% / 20

SPEED PARAMETERS
#4 - Fabian Way Bet. E Meadow Dr & E Charleston Rd
City of Palo Alto
Southbound Spot Speeds
13:00-13:55
9/21/2023
Project #: 23-080265-004
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_004
NB SB EB WB Total
3,037 2,870 0 0 5,907

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 12 3 12:00 38 47 85 00:00 01:00 12 10 22
00:15 65 11 12:15 56 43 99 01:00 02:00 79 16
00:30 32 5 12:30 40 32 72 02:00 03:00 55 10
00:45 21 3 12:45 46 32 78 03:00 04:00 92 11
01:00 33 6 13:00 53 45 98 04:00 05:00 11 6 17
01:15 24 6 13:15 36 30 66 05:00 06:00 109 17 126
01:30 00 0 13:30 44 38 82 06:00 07:00 115 27 142
01:45 22 4 13:45 36 40 76 07:00 08:00 156 137 293
02:00 00 0 14:00 35 30 65 08:00 09:00 276 318 594
02:15 01 1 14:15 40 38 78 09:00 10:00 219 199 418
02:30 22 4 14:30 44 62 106 10:00 11:00 141 142 283
02:45 32 5 14:45 43 63 106 11:00 12:00 145 152 297
03:00 30 3 15:00 57 58 115 12:00 13:00 180 154 334
03:15 21 3 15:15 80 70 150 13:00 14:00 169 153 322
03:30 11 2 15:30 40 76 116 14:00 15:00 162 193 355
03:45 30 3 15:45 40 66 106 15:00 16:00 217 270 487
04:00 14 5 16:00 54 55 109 16:00 17:00 245 257 502
04:15 21 3 16:15 64 69 133 17:00 18:00 324 370 694
04:30 41 5 16:30 58 74 132 18:00 19:00 191 186 377
04:45 40 4 16:45 69 59 128 19:00 20:00 138 118 256
05:00 13 4 17 17:00 78 78 156 20:00 21:00 81 72 153
05:15 22 3 25 17:15 64 90 154 21:00 22:00 60 36 96
05:30 31 2 33 17:30 84 101 185 22:00 23:00 36 16 52
05:45 43 8 51 17:45 98 101 199 23:0 0 00:00 29 21 50
06:00 25 6 31 18:00 56 56 112
06:15 23 7 30 18:15 46 44 90 NB SB EB WB TOTA L
06:30 37 7 44 18:30 44 47 91 00:00 to 12:00
06:45 30 7 37 18:45 45 39 84 1205 1024 2229
07:00 24 15 39 19:00 40 48 88 7:45 8:00 8:00
07:15 26 23 49 19:15 39 31 70 281 318 594
07:30 44 37 81 19:30 28 17 45 0.739 0.811 0.858
07:45 62 62 124 19:45 31 22 53
08:00 95 78 173 20:00 17 16 33 12:00 to 00:00
08:15 63 98 161 20:15 21 18 39 1832 1846 3678
08:30 61 72 133 20:30 17 24 41 17:00 17:00 17:00
08:45 57 70 127 20:45 26 14 40 324 370 694
09:00 67 65 132 21:00 24 13 37 0.827 0.916 0.872
09:15 61 51 112 21:15 21 6 27
09:30 39 53 92 21:30 89 17 07:00 to 09:00
09:45 52 30 82 21:45 78 15 432 455 887
10:00 39 34 73 22:00 19 3 22 7:45 8:00 8:00
10:15 30 37 67 22:15 54 9 281 318 594
10:30 32 38 70 22:30 66 12 0.739 0.811 0.858
10:45 40 33 73 22:45 63 9
11:00 26 41 67 23:00 85 13 16:00 to 18:00
11:15 36 36 72 23:15 12 11 23 569 627 1196
11:30 38 35 73 23:30 43 7 17:00 17:00 17:00
11:45 45 40 85 23:45 52 7 324 370 694
TOTALS 1205 1024 0 0 2229 TOTALS 1832 1846 0 0 3678 0.827 0.916 0.872 SPLIT % 54% 46% 0% 0% 38% SPLIT % 50% 50% 0% 0% 62%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#4 ‐ Fabian Way Bet. E Meadow Dr & E Charleston Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
300
350
400
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #5
Street: Hanover St.

Limits: Page Mill Rd. to Hillview Ave.

Direction: NB/SB/EB/WB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 30
# Speed Data Collected 203
85th Percentile (mph) 33
10 mph Pace 23-32
Percent in Pace 79%
Average Daily Traffic (ADT) 6,524
Length of Segment (mi.) 0.75
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 6
Accident Rate (Acc/MVM) 1.12
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Corporate campuses on both sides.

An undivided 2-lane local/collector. Two-way left-turn lane serves as median. Concrete sidewalks present on both sides except on southbound side from approximately 1,355 feet north of Hillview Ave. to Hillview Ave. Class II bike lanes on both sides. Signals at Page Mill Rd. and Hillview Ave. Side street stop control at remaining intersections. Left-turn storage bays and right-turn storage bays present at intersections with Page Mill Rd. and Hillview Ave. Some side streets have turn lanes. Marked crosswalks at signalized intersections and some driveways. Midblock crosswalks also present. No on-street parking permitted on either side. No school zone present. Broad horizontal curve approximately 1,200 feet east of Page Mill Rd. Broad vertical curves present on southern half of segment. Moderate driveway density on both sides. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 33 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
Speed Limit Change? No
Existing Speed Limit: 30 Recommended Speed Limit: 30
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 2
21 4
22 5
23 11
24 14
25 15
26 21
27 21
28 21
29 17
30 19
31 13
32 9
33 8
34 9
35 3
36 3
37 3
38 1
39 3
40 1
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 203 20 - 40 28 mph 33 mph 23 - 32 161 79% 5% / 11 16% / 31

SPEED PARAMETERS
#5 - Hanover St N/O JPMC Silicon Valley Technology Center Dwy City of Palo Alto
Northbound & Southbound Spot Speeds
10:45-11:45
9/28/2023
Project #: 23-080265-005
0 5 10 15 20 25
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 3
23 7
24 7
25 7
26 12
27 13
28 11
29 9
30 10
31 6
32 5
33 5
34 2
35 1
36 2
37 1
38 39
40 1
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 103 21 - 40 28 mph 32 mph 23 - 32 87 84% 3% / 4 12% / 12

SPEED PARAMETERS
#5 - Hanover St N/O JPMC Silicon Valley Technology Center Dwy City of Palo Alto
Northbound Spot Speeds
10:45-11:45
9/28/2023
Project #: 23-080265-005
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 2
21 3
22 2
23 4
24 7
25 8
26 9
27 8
28 10
29 8
30 9
31 7
32 4
33 3
34 7
35 2
36 1
37 2
38 1
39 3
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 20 - 39 28 mph 34 mph 23 - 32 74 74% 7% / 7 19% / 19

SPEED PARAMETERS
#5 - Hanover St N/O JPMC Silicon Valley Technology Center Dwy City of Palo Alto
Southbound Spot Speeds
10:45-11:45
9/28/2023
Project #: 23-080265-005
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_005
NB SB EB WB Total
3,610 2,914 0 0 6,524

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 93 12 12:00 58 42 100 00:00 01:00 19 4 23
00:15 41 5 12:15 61 41 102 01:00 02:00 19 2 21
00:30 40 4 12:30 61 46 107 02:00 03:00 86 14
00:45 20 2 12:45 52 47 99 03:00 04:00 78 15
01:00 71 8 13:00 68 50 118 04:00 05:00 54 3 48
01:15 30 3 13:15 48 42 90 05:00 06:00 18 92 110
01:30 61 7 13:30 64 40 104 06:00 07:00 60 177 237
01:45 30 3 13:45 44 43 87 07:00 08:00 112 262 374
02:00 31 4 14:00 76 33 109 08:00 09:00 273 337 610
02:15 00 0 14:15 59 46 105 09:00 10:00 261 322 583
02:30 23 5 14:30 75 55 130 10:00 11:00 168 253 421
02:45 32 5 14:45 64 51 115 11:00 12:00 202 200 402
03:00 10 1 15:00 82 40 122 12:00 13:00 232 176 408
03:15 11 2 15:15 90 41 131 13:00 14:00 224 175 399
03:30 52 7 15:30 81 46 127 14:00 15:00 274 185 459
03:45 05 5 15:45 94 43 137 15:00 16:00 347 170 517
04:00 02 2 16:00 112 53 165 16:00 17:00 438 158 596
04:15 15 6 16:15 121 35 156 17:00 18:00 312 115 427
04:30 31 3 16 16:30 122 39 161 18:00 19:00 243 101 344
04:45 12 3 24 16:45 83 31 114 19:00 20:00 159 43 202
05:00 21 0 12 17:00 77 29 106 20:00 21:00 98 33 131
05:15 32 2 25 17:15 83 31 114 21:00 22:00 42 20 62
05:30 62 3 29 17:30 75 33 108 22:00 23:00 42 15 57
05:45 73 7 44 17:45 77 22 99 23:0 0 00:00 47 17 64
06:00 83 9 47 18:00 60 24 84
06:15 12 33 45 18:15 69 33 102 NB SB EB WB TOTA L
06:30 13 38 51 18:30 55 21 76 00:00 to 12:00
06:45 27 67 94 18:45 59 23 82 1152 1706 2858
07:00 16 72 88 19:00 50 12 62 8:15 8:45 8:30
07:15 23 67 90 19:15 41 11 52 291 360 646
07:30 34 51 85 19:30 29 5 34 0.957 0.841 0.887
07:45 39 72 111 19:45 39 15 54
08:00 58 91 149 20:00 32 11 43 12:00 to 00:00
08:15 73 64 137 20:15 35 8 43 2458 1208 3666
08:30 67 75 142 20:30 17 6 23 15:45 14:15 15:45
08:45 75 107 182 20:45 14 8 22 449 192 619
09:00 76 97 173 21:00 12 6 18 0.920 0.873 0.938
09:15 73 76 149 21:15 11 6 17
09:30 53 80 133 21:30 11 6 17 07:00 to 09:00
09:45 59 69 128 21:45 82 10 385 599 984
10:00 47 74 121 22:00 74 11 8:00 8:00 8:00
10:15 41 69 110 22:15 13 3 16 273 337 610
10:30 40 57 97 22:30 83 11 0.910 0.787 0.838
10:45 40 53 93 22:45 14 5 19
11:00 57 72 129 23:00 16 1 17 16:00 to 18:00
11:15 54 45 99 23:15 12 8 20 750 273 1023
11:30 47 51 98 23:30 10 5 15 16:00 16:00 16:00
11:45 44 32 76 23:45 93 12 438 158 596
TOTALS 1152 1706 0 0 2858 TOTALS 2458 1208 0 0 3666 0.898 0.745 0.903 SPLIT % 40% 60% 0% 0% 44% SPLIT % 67% 33% 0% 0% 56%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#5 ‐ Hanover St N/O JPMC Silicon Valley Technology Center Dwy DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
300
350
400
450
500
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #6
Street: Hillview Ave.

Limits: Hanover St. to Foothill Exp.

Direction: NB/SB/EB/WB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 30
# Speed Data Collected 129
85th Percentile (mph) 32
10 mph Pace 23-32
Percent in Pace 84%
Average Daily Traffic (ADT) 5,362
Length of Segment (mi.) 0.37
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 8
Accident Rate (Acc/MVM) 3.66
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Corporate campuses on both sides.

An undivided 2-lane local/collector. Two-way left-turn lane serves as median. Concrete sidewalks on both sides except from approximately 305 feet south of Porter Dr. to approximately 845 feet south of Porter Dr. and from approximately 300 feet north of Miranda Ave. to Miranda Ave. on the southbound side. Class II bike lanes on both sides. Signals at Porter Dr. and Miranda Ave. Side street stop control at some driveways. Left-turn storage bays present at intersections with Porter Dr. and Miranda Ave. Right-turn storage bay present at Porter Dr. Marked crosswalks at signalized intersections and midblock crosswalks present. No on-street parking permitted on either side. No school zone present. Broad horizontal curve approximately 400 feet east of Hanover St. Slight horizontal bend approximately 245 feet north of Miranda Ave. Gentle vertical curves present throughout segment. Moderate driveway density on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 32 --> 30 Speed Limit Change? No
Existing Speed Limit: 30 Recommended Speed Limit: 30
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 1
21 3
22 3
23 5
24 9
25 12
26 11
27 19
28 18
29 11
30 11
31 6
32 6
33 3
34 3
35 1
36 3
37 2
38 39
40 1
41 1
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 129 20 - 41 28 mph 32 mph 23 - 32 108 84% 5% / 7 11% / 14

SPEED PARAMETERS
#6 - Hillview Ave E/O Hanover St/Porter Dr
City of Palo Alto
Eastbound & Westbound Spot Speeds
12:05-13:20
9/28/2023
Project #: 23-080265-006
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 1
23 2
24 3
25 3
26 5
27 8
28 9
29 6
30 5
31 2
32 1
33 1
34 1
35 36 1
37 1
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 50 21 - 37 28 mph 30 mph 22 - 31 44 88% 2% / 1 10% / 5

SPEED PARAMETERS
#6 - Hillview Ave E/O Hanover St/Porter Dr
City of Palo Alto
Eastbound Spot Speeds
12:05-13:20
9/28/2023
Project #: 23-080265-006
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 1
21 2
22 2
23 3
24 6
25 9
26 6
27 11
28 9
29 5
30 6
31 4
32 5
33 2
34 2
35 1
36 2
37 1
38 39
40 1
41 1
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 79 20 - 41 27 mph 32 mph 23 - 32 64 81% 6% / 5 13% / 10

SPEED PARAMETERS
#6 - Hillview Ave E/O Hanover St/Porter Dr
City of Palo Alto
Westbound Spot Speeds
12:05-13:20
9/28/2023
Project #: 23-080265-006
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_006
NB SB EB WB Total
0 0 2,308 3,054 5,362

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 37 10 12:00 18 51 69 00:00 01:00 51 3 18
00:15 12 3 12:15 31 43 74 01:00 02:00 51 2 17
00:30 14 5 12:30 33 42 75 02:00 03:00 35 8
00:45 00 0 12:45 40 34 74 03:00 04:00 65 11
01:00 14 5 13:00 41 43 84 04:00 05:00 21 6 27
01:15 23 5 13:15 29 31 60 05:00 06:00 45 20 65
01:30 13 4 13:30 40 42 82 06:00 07:00 105 48 153
01:45 12 3 13:45 36 40 76 07:00 08:00 192 130 322
02:00 02 2 14:00 31 45 76 08:00 09:00 171 383 554
02:15 00 0 14:15 37 39 76 09:00 10:00 137 421 558
02:30 21 3 14:30 41 54 95 10:00 11:00 146 225 371
02:45 12 3 14:45 47 45 92 11:00 12:00 117 198 315
03:00 00 0 15:00 50 51 101 12:00 13:00 122 170 292
03:15 01 1 15:15 29 60 89 13:00 14:00 146 156 302
03:30 34 7 15:30 46 60 106 14:00 15:00 156 183 339
03:45 30 3 15:45 29 66 95 15:00 16:00 154 237 391
04:00 20 2 16:00 59 71 130 16:00 17:00 226 281 507
04:15 21 3 16:15 46 78 124 17:00 18:00 224 202 426
04:30 33 6 16:30 70 73 143 18:00 19:00 155 133 288
04:45 14 2 16 16:45 51 59 110 19:00 20:00 69 93 162
05:00 22 4 17:00 55 47 102 20:00 21:00 45 43 88
05:15 10 4 14 17:15 58 57 115 21:00 22:00 29 27 56
05:30 13 7 20 17:30 64 49 113 22:00 23:00 17 30 47
05:45 20 7 27 17:45 47 49 96 23:0 0 00:00 12 33 45
06:00 18 5 23 18:00 49 41 90
06:15 21 8 29 18:15 39 38 77 NB SB EB WB TOTA L
06:30 20 13 33 18:30 34 28 62 00:00 to 12:00
06:45 46 22 68 18:45 33 26 59 953 1466 2419
07:00 48 23 71 19:00 25 26 51 7:15 8:45 8:45
07:15 54 30 84 19:15 15 22 37 194 460 627
07:30 29 31 60 19:30 13 15 28 0.795 0.865 0.891
07:45 61 46 107 19:45 16 30 46
08:00 50 79 129 20:00 13 18 31 12:00 to 00:00
08:15 35 96 131 20:15 10 10 20 1355 1588 2943
08:30 32 93 125 20:30 12 7 19 16:30 15:45 16:00
08:45 54 115 169 20:45 10 8 18 234 288 507
09:00 43 133 176 21:00 97 16 0.836 0.923 0.886
09:15 35 115 150 21:15 47 11
09:30 35 97 132 21:30 10 9 19 07:00 to 09:00
09:45 24 76 100 21:45 64 10 363 513 876
10:00 39 69 108 22:00 56 11 7:15 8:00 8:00
10:15 42 54 96 22:15 31 0 13 194 383 554
10:30 34 54 88 22:30 47 11 0.795 0.833 0.820
10:45 31 48 79 22:45 57 12
11:00 29 51 80 23:00 11 2 13 16:00 to 18:00
11:15 34 54 88 23:15 69 15 450 483 933
11:30 30 39 69 23:30 46 10 16:30 16:00 16:00
11:45 24 54 78 23:45 16 7 234 281 507
TOTALS 0 0 953 1466 2419 TOTALS 0 0 1355 1588 2943 0.836 0.901 0.886 SPLIT % 0% 0% 39% 61% 45% SPLIT % 0% 0% 46% 54% 55%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#6 ‐ Hillview Ave E/O Hanover St/Porter Dr
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
300
350
400
450
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #7
Street: Middlefield Rd.

Limits: University Ave. to Embarcadero Rd.

Direction: NB/SB
Date /Location of Survey 9/20/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 180
85th Percentile (mph) 33
10 mph Pace 25-34
Percent in Pace 87%
Average Daily Traffic (ADT) 6,660
Length of Segment (mi.) 0.96
Street Classification Residential Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 80
Accident Rate (Acc/MVM) 11.44
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential and institutional land uses on both sides.

An undivided 2- to 4-lane residential arterial. Striped yellow line and double yellow line serve as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides from south of Homer Ave. to approximately 180 feet north of Embarcadero Rd. on the western side and to approximately 385 feet north of Embarcadero Rd. on the eastern side. Signals at University Ave., Hamilton Ave., Homer Ave., Channing Ave., Addison Ave., Melville Ave., and Embarcadero Rd. Stop control at remaining intersections. Left-turn storage bays and right-turn storage bays present at some intersections on some approaches of segment and side streets. Marked crosswalks present at signalized intersections and at some stop controlled intersections. On-street parking present on both sides south of Homer Ave. School zone is present. No horizontal curves present. Some vertical curves present.

Roadway has negative grade in the southerly direction. Driveway density high on both sides. Bulb-outs present at intersection with Kellogg Ave.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 33 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians, including an elementary school, concrete sidewalks, and marked crosswalks: 30 --> 25 Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 20
21 22
23 4
24 6
25 13
26 10
27 20
28 13
29 27
30 24
31 19
32 15
33 9
34 7
35 3
36 4
37 1
38 39 1
40 1
41 1
42 43 1
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 180 18 - 43 29 mph 33 mph 25 - 34 157 87% 6% / 11 7% / 12

SPEED PARAMETERS
#7 - Middlefield Rd Bet. Lincoln Ave & Kingsley Ave
City of Palo Alto
Eastbound & Westbound Spot Speeds
11:00-12:00
9/20/2023
Project #: 23-080265-007
0 5 10 15 20 25 30
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 20
21 22
23 1
24 3
25 6
26 6
27 12
28 9
29 14
30 12
31 9
32 9
33 6
34 3
35 36 2
37 1
38 39
40 41 1
42 43 1
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 96 18 - 43 29 mph 32 mph 24 - 33 86 90% 2% / 2 9% / 8

SPEED PARAMETERS
#7 - Middlefield Rd Bet. Lincoln Ave & Kingsley Ave
City of Palo Alto
Eastbound Spot Speeds
11:00-12:00
9/20/2023
Project #: 23-080265-007
02468 1 0 1 2 1 4 1 6
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 3
24 3
25 7
26 4
27 8
28 4
29 13
30 12
31 10
32 6
33 3
34 4
35 3
36 2
37 38
39 1
40 1
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 84 23 - 40 29 mph 33 mph 25 - 34 71 85% 7% / 6 9% / 7

SPEED PARAMETERS
#7 - Middlefield Rd Bet. Lincoln Ave & Kingsley Ave
City of Palo Alto
Westbound Spot Speeds
11:00-12:00
9/20/2023
Project #: 23-080265-007
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_007
NB SB EB WB Total
0 0 3,528 3,132 6,660

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 24 6 12:00 53 53 106 00:00 01:00 10 12 22
00:15 51 6 12:15 53 52 105 01:00 02:00 27 9
00:30 25 7 12:30 52 44 96 02:00 03:00 24 6
00:45 12 3 12:45 58 65 123 03:00 04:00 41 5
01:00 13 4 13:00 49 53 102 04:00 05:00 11 7 18
01:15 01 1 13:15 59 48 107 05:00 06:00 81 4 22
01:30 00 0 13:30 54 58 112 06:00 07:00 53 53 106
01:45 13 4 13:45 70 45 115 07:00 08:00 137 167 304
02:00 01 1 14:00 89 44 133 08:00 09:00 291 296 587
02:15 02 2 14:15 58 60 118 09:00 10:00 265 214 479
02:30 20 2 14:30 62 60 122 10:00 11:00 233 207 440
02:45 01 1 14:45 71 52 123 11:00 12:00 222 214 436
03:00 20 2 15:00 51 65 116 12:00 13:00 216 214 430
03:15 10 1 15:15 78 59 137 13:00 14:00 232 204 436
03:30 11 2 15:30 92 52 144 14:00 15:00 280 216 496
03:45 00 0 15:45 92 48 140 15:00 16:00 313 224 537
04:00 11 2 16:00 84 67 151 16:00 17:00 328 269 597
04:15 42 6 16:15 69 63 132 17:00 18:00 351 284 635
04:30 33 6 16:30 73 63 136 18:00 19:00 224 204 428
04:45 31 4 16:45 102 76 178 19:00 20:00 132 139 271
05:00 10 1 17:00 99 76 175 20:00 21:00 98 83 181
05:15 13 4 17:15 103 66 169 21:00 22:00 58 60 118
05:30 25 7 17:30 82 61 143 22:00 23:00 38 31 69
05:45 46 10 17:45 67 81 148 23:0 0 00:00 20 8 28
06:00 61 2 18 18:00 60 64 124
06:15 89 17 18:15 61 52 113 NB SB EB WB TOTA L
06:30 21 14 35 18:30 48 39 87 00:00 to 12:00
06:45 18 18 36 18:45 55 49 104 1238 1196 2434
07:00 28 22 50 19:00 40 47 87 8:30 8:15 8:15
07:15 22 25 47 19:15 37 37 74 294 301 590
07:30 35 51 86 19:30 30 16 46 0.855 0.907 0.934
07:45 52 69 121 19:45 25 39 64
08:00 71 67 138 20:00 17 22 39 12:00 to 00:00
08:15 81 77 158 20:15 26 22 48 2290 1936 4226
08:30 72 83 155 20:30 29 27 56 16:45 17:00 16:45
08:45 67 69 136 20:45 26 12 38 386 284 665
09:00 69 72 141 21:00 19 19 38 0.937 0.877 0.934
09:15 86 56 142 21:15 17 21 38
09:30 59 29 88 21:30 10 11 21 07:00 to 09:00
09:45 51 57 108 21:45 12 9 21 428 463 891
10:00 66 70 136 22:00 12 10 22 8:00 7:45 8:00
10:15 53 46 99 22:15 10 5 15 291 296 587
10:30 57 38 95 22:30 71 0 17 0.898 0.892 0.929
10:45 57 53 110 22:45 96 15
11:00 62 52 114 23:00 83 11 16:00 to 18:00
11:15 55 58 113 23:15 62 8 679 553 1232
11:30 46 52 98 23:30 60 6 16:45 17:00 16:45
11:45 59 52 111 23:45 03 3 386 284 665
TOTALS 0 0 1238 1196 2434 TOTALS 0 0 2290 1936 4226 0.937 0.877 0.934 SPLIT % 0% 0% 51% 49% 37% SPLIT % 0% 0% 54% 46% 63%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#7 ‐ Middlefield Rd Bet. Lincoln Ave & Kingsley Ave
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #8
Street: San Antonio Rd.

Limits: Alma St. to Middlefield Rd.

Direction: EB/WB
Date /Location of Survey 9/27/2023
Posted Speed Limit (mph) 35
# Speed Data Collected 200
85th Percentile (mph) 44
10 mph Pace 34-43
Percent in Pace 76%
Average Daily Traffic (ADT) 31,433
Length of Segment (mi.) 0.61
Street Classification Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 12
Accident Rate (Acc/MVM) 0.57
Statewide Average Accident Rate 1.10
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential and institutional land uses on both sides. Commercial land uses on eastern side near Alma St.

A divided 4-lane arterial. Raised median serves as median. Concrete sidewalks present on eastern side north of Nita Ave. No bike facilities present. Signals at Middlefield Rd. and Nita Ave. Side street stop control at remaining intersections. Left-turn storage bays present at Middlefield Rd. and right-turn storage bays present at Nita Ave. and Byron St. Marked crosswalks present at signalized intersections and at Byron St. No on-street parking permitted on either side. School zone is present. Broad horiztonal curves present throughout segment. Vertical curves present near Alma St. Roadway has negative slope in northerly direction. Moderate driveway density on eastern side.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 44 --> 45 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 45 --> 40
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a TK-8 school, concrete sidewalks, Class II bike lanes, and marked crosswalks:
40 --> 35
Speed Limit Change? No
Existing Speed Limit: 35 Recommended Speed Limit: 35
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30 1
31 2
32 5
33 8
34 10
35 15
36 15
37 17
38 19
39 20
40 18
41 15
42 12
43 10
44 8
45 7
46 5
47 4
48 3
49 1
50 4
51 1
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 200 30 - 51 39 mph 44 mph 34 - 43 151 76% 8% / 16 17% / 33

SPEED PARAMETERS
#8 - San Antonio Rd S/O W Middlefleld Rd
City of Palo Alto
Northbound & Southbound Spot Speeds
10:50-11:40
9/27/2023
Project #: 23-080265-008
0 5 10 15 20 25
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 1
32 2
33 2
34 4
35 7
36 9
37 9
38 10
39 11
40 8
41 7
42 6
43 7
44 6
45 4
46 1
47 2
48 1
49 1
50 2
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 31 - 50 39 mph 44 mph 35 - 44 80 80% 9% / 9 11% / 11

SPEED PARAMETERS
#8 - San Antonio Rd S/O W Middlefleld Rd
City of Palo Alto
Northbound Spot Speeds
10:50-11:40
9/27/2023
Project #: 23-080265-008
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30 1
31 1
32 3
33 6
34 6
35 8
36 6
37 8
38 9
39 9
40 10
41 8
42 6
43 3
44 2
45 3
46 4
47 2
48 2
49 50 2
51 1
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 30 - 51 39 mph 44 mph 33 - 42 76 76% 5% / 5 19% / 19

SPEED PARAMETERS
#8 - San Antonio Rd S/O W Middlefleld Rd
City of Palo Alto
Southbound Spot Speeds
10:50-11:40
9/27/2023
Project #: 23-080265-008
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_008
NB SB EB WB Total
14,728 16,705 0 0 31,433

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 24 29 53 12:00 236 262 498 00:00 01:00 76 93 169
00:15 19 19 38 12:15 230 267 497 01:00 02:00 47 45 92
00:30 15 29 44 12:30 242 263 505 02:00 03:00 42 46 88
00:45 18 16 34 12:45 226 261 487 03:00 04:00 36 35 71
01:00 14 11 25 13:00 245 229 474 04:00 05:00 67 73 140
01:15 13 12 25 13:15 226 230 456 05:00 06:00 167 217 384 01:30 10 13 23 13:30 226 217 443 06:00 07:00 326 365 691 01:45 10 9 19 13:45 232 258 490 07:00 08:00 881 720 1601 02:00 91 7 26 14:00 203 254 457 08:00 09:00 1089 1099 2188 02:15 14 9 23 14:15 229 273 502 09:00 10:00 1059 852 1911 02:30 13 9 22 14:30 239 279 518 10:00 11:00 855 875 1730 02:45 61 1 17 14:45 226 306 532 11:00 12:00 879 971 1850 03:00 71 1 18 15:00 251 296 547 12:00 13:00 934 1053 1987 03:15 10 7 17 15:15 265 325 590 13:00 14:00 929 934 1863 03:30 86 14 15:30 260 352 612 14:00 15:00 897 1112 2009 03:45 11 11 22 15:45 292 330 622 15:00 16:00 1068 1303 2371 04:00 11 15 26 16:00 245 323 568 16:00 17:00 993 1380 2373 04:15 10 16 26 16:15 231 364 595 17:00 18:00 972 1589 2561 04:30 28 15 43 16:30 278 333 611 18:00 19:00 926 1346 2272 04:45 18 27 45 16:45 239 360 599 19:00 20:00 783 933 1716 05:00 32 36 68 17:00 232 400 632 20:00 21:00 740 720 1460 05:15 34 54 88 17:15 225 405 630 21:00 22:00 478 469 947 05:30 42 53 95 17:30 274 396 670 22:00 23:00 303 297 600 05:45 59 74 133 17:45 241 388 629 23:0 0 00:00 181 178 359 06:00 58 74 132 18:00 250 358 608
06:15 84 87 171 18:15 217 334 551 NB SB EB WB TOTA L
06:30 88 89 177 18:30 203 309 512 00:00 to 12:00
06:45 96 115 211 18:45 256 345 601 5524 5391 10915
07:00 147 128 275 19:00 231 263 494 7:30 7:45 7:45
07:15 187 172 359 19:15 199 237 436 1152 1107 2255
07:30 242 188 430 19:30 163 205 368 0.862 0.884 0.871
07:45 305 232 537 19:45 190 228 418
08:00 334 313 647 20:00 197 213 410 12:00 to 00:00
08:15 271 264 535 20:15 198 191 389 9204 11314 20518
08:30 238 298 536 20:30 172 157 329 15:00 17:00 17:00
08:45 246 224 470 20:45 173 159 332 1068 1589 2561
09:00 245 204 449 21:00 136 139 275 0.914 0.981 0.956
09:15 288 217 505 21:15 117 126 243
09:30 240 205 445 21:30 120 101 221 07:00 to 09:00
09:45 286 226 512 21:45 105 103 208 1970 1819 3789
10:00 214 193 407 22:00 99 88 187 7:30 7:45 7:45
10:15 221 229 450 22:15 83 69 152 1152 1107 2255
10:30 215 201 416 22:30 72 68 140 0.862 0.884 0.871
10:45 205 252 457 22:45 49 72 121
11:00 233 216 449 23:00 79 53 132 16:00 to 18:00
11:15 215 231 446 23:15 41 48 89 1965 2969 4934
11:30 211 244 455 23:30 31 41 72 16:00 17:00 17:00
11:45 220 280 500 23:45 30 36 66 993 1589 2561
TOTALS 5524 5391 0 0 10915 TOTALS 9204 11314 0 0 20518 0.893 0.981 0.956 SPLIT % 51% 49% 0% 0% 35% SPLIT % 45% 55% 0% 0% 65%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#8 ‐ San Antonio Rd S/O W Middlefleld Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 200
400
600
800
1000
1200
1400
1600
1800
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #9
Street: San Antonio Rd.

Limits: Middlefield Rd. to Charleston Rd.

Direction: EB/WB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 35
# Speed Data Collected 201
85th Percentile (mph) 39
10 mph Pace 29-38
Percent in Pace 72%
Average Daily Traffic (ADT) 25,149
Length of Segment (mi.) 0.40
Street Classification Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 36
Accident Rate (Acc/MVM) 3.25
Statewide Average Accident Rate 1.10
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial and residential land uses on western side. Commercial land uses on eastern side.

A divided 4-lane arterial. Raised median serves as median. Concrete sidewalks present on both sides. Class III sharrows on both sides. Signals at all intersections. Stop control on SB approach of frontage lane to mainline lanes. Lef-turn storage bays and right- turn storage bays present at signalized intersections. Marked crosswalks present at signalized intersections. On-street parking present on both sides from approximately 345 feet north of Middlefield Rd. to approximately 490 feet south of Charleston Rd. No school zone present. Slight horizontal curve near Leghorn St. No vertical curves. Segment sloped negatively northwardly. Driveway density high on both sides. Additional southbound lane from Charleston Rd. to approximately 490 feet south of Charleston Rd. separated from mainline by raised median and angled parking. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 39 --> 40 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 40 --> 35
Speed Limit Change? No
Existing Speed Limit: 35 Recommended Speed Limit: 35
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 4
26 3
27 5
28 9
29 8
30 11
31 14
32 14
33 15
34 17
35 18
36 19
37 14
38 14
39 8
40 7
41 3
42 4
43 6
44 2
45 46 2
47 48 1
49 2
50 51
52 1
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 201 25 - 52 35 mph 39 mph 29 - 38 144 72% 10% / 21 18% / 36

SPEED PARAMETERS
#9 - San Antonio Rd S/O Leghorn St
City of Palo Alto
Northbound & Southbound Spot Speeds
09:00-09:50
9/21/2023
Project #: 23-080265-009
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 2
26 2
27 3
28 6
29 6
30 5
31 7
32 7
33 8
34 10
35 10
36 8
37 5
38 5
39 3
40 2
41 1
42 2
43 3
44 1
45 46 1
47 48 1
49 1
50 51
52 1
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 25 - 52 34 mph 39 mph 28 - 37 72 72% 7% / 7 21% / 21

SPEED PARAMETERS
#9 - San Antonio Rd S/O Leghorn St
City of Palo Alto
Northbound Spot Speeds
09:00-09:50
9/21/2023
Project #: 23-080265-009
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 2
26 1
27 2
28 3
29 2
30 6
31 7
32 7
33 7
34 7
35 8
36 11
37 9
38 9
39 5
40 5
41 2
42 2
43 3
44 1
45 46 1
47 48
49 1
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 101 25 - 49 35 mph 39 mph 30 - 39 76 75% 9% / 10 15% / 15

SPEED PARAMETERS
#9 - San Antonio Rd S/O Leghorn St
City of Palo Alto
Southbound Spot Speeds
09:00-09:50
9/21/2023
Project #: 23-080265-009
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_009
NB SB EB WB Total
11,838 13,311 0 0 25,149

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 20 28 48 12:00 191 182 373 00:00 01:00 67 81 148
00:15 19 15 34 12:15 205 218 423 01:00 02:00 37 38 75
00:30 13 26 39 12:30 163 203 366 02:00 03:00 27 37 64
00:45 15 12 27 12:45 191 189 380 03:00 04:00 27 30 57
01:00 14 10 24 13:00 193 177 370 04:00 05:00 51 62 113
01:15 89 17 13:15 170 175 345 05:00 06:00 127 140 267
01:30 61 0 16 13:30 166 193 359 06:00 07:00 255 271 526 01:45 99 18 13:45 174 220 394 07:00 08:00 715 577 1292
02:00 71 1 18 14:00 161 228 389 08:00 09:00 974 816 1790 02:15 66 12 14:15 193 233 426 09:00 10:00 903 722 1625
02:30 99 18 14:30 181 221 402 10:00 11:00 708 708 1416
02:45 51 1 16 14:45 176 263 439 11:00 12:00 689 773 1462 03:00 41 0 14 15:00 186 258 444 12:00 13:00 750 792 1542 03:15 75 12 15:15 185 278 463 13:00 14:00 703 765 1468
03:30 86 14 15:30 210 249 459 14:00 15:00 711 945 1656
03:45 89 17 15:45 205 278 483 15:00 16:00 786 1063 1849 04:00 11 9 20 16:00 216 292 508 16:00 17:00 863 1186 2049 04:15 91 7 26 16:15 214 283 497 17:00 18:00 871 1215 2086 04:30 16 12 28 16:30 229 304 533 18:00 19:00 700 1053 1753 04:45 15 24 39 16:45 204 307 511 19:00 20:00 568 799 1367 05:00 25 20 45 17:00 246 315 561 20:00 21:00 528 552 1080 05:15 28 33 61 17:15 211 332 543 21:00 22:00 355 335 690 05:30 35 46 81 17:30 204 294 498 22:00 23:00 281 219 500 05:45 39 41 80 17:45 210 274 484 23:0 0 00:00 142 132 274 06:00 50 51 101 18:00 198 277 475
06:15 60 57 117 18:15 196 253 449 NB SB EB WB TOTA L
06:30 69 66 135 18:30 155 269 424 00:00 to 12:00
06:45 76 97 173 18:45 151 254 405 4580 4255 8835
07:00 123 114 237 19:00 159 215 374 8:30 8:00 8:00
07:15 164 136 300 19:15 152 227 379 999 816 1790
07:30 200 157 357 19:30 129 187 316 0.932 0.940 0.917
07:45 228 170 398 19:45 128 170 298
08:00 271 217 488 20:00 134 156 290 12:00 to 00:00
08:15 218 209 427 20:15 157 145 302 7258 9056 16314
08:30 232 211 443 20:30 114 138 252 16:15 16:30 16:30
08:45 253 179 432 20:45 123 113 236 893 1258 2148
09:00 268 165 433 21:00 100 97 197 0.908 0.947 0.957
09:15 246 191 437 21:15 84 89 173
09:30 179 188 367 21:30 79 76 155 07:00 to 09:00
09:45 210 178 388 21:45 92 73 165 1689 1393 3082
10:00 169 163 332 22:00 89 65 154 8:00 8:00 8:00
10:15 170 186 356 22:15 84 48 132 974 816 1790
10:30 177 161 338 22:30 67 55 122 0.899 0.940 0.917
10:45 192 198 390 22:45 41 51 92
11:00 169 182 351 23:00 57 39 96 16:00 to 18:00
11:15 160 187 347 23:15 33 33 66 1734 2401 4135
11:30 191 200 391 23:30 25 33 58 16:15 16:30 16:30
11:45 169 204 373 23:45 27 27 54 893 1258 2148
TOTALS 4580 4255 0 0 8835 TOTALS 7258 9056 0 0 16314 0.908 0.947 0.957 SPLIT % 52% 48% 0% 0% 35% SPLIT % 44% 56% 0% 0% 65%
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#9 ‐ San Antonio Rd S/O Leghorn St
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
0 200
400
600
800
1000
1200
1400
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #10
Street: W. Bayshore Rd.

Limits: Loma Verde Ave. to Fabian Way
Direction: NB/SB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 35
# Speed Data Collected 167
85th Percentile (mph) 45
10 mph Pace 34-43
Percent in Pace 68%
Average Daily Traffic (ADT) 4,474
Length of Segment (mi.) 0.58
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 1
Accident Rate (Acc/MVM) 0.35
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial land uses on western side.

An undivided 2-lane local/collector. Double yellow line serves as median. Concrete sidewalks present on western side. Class II bike lanes on both sides. Stop control on side street (Loma Verde Ave.). No storage bays present. Marked crosswalk present on side street approach (Loma Verde Ave.). Marked bicycle crossing additionally present. No on-street parking permitted on either side. No school zone present. Gentle horizontal curve and vertical curves present on southern end of segment. Driveway density moderate on western side. Segment serves as frontage road to US 101. Pedestrian bridge allows crossing access over segment and US 101. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 45 --> 45 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 45 --> 40
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a K-12 school, concrete sidewalks, bikeways, and marked crosswalks: 40 --> 35 Speed Limit Change? No
Existing Speed Limit: 35 Recommended Speed Limit: 35
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26 1
27 28 1
29 1
30 1
31 1
32 4
33 8
34 9
35 14
36 11
37 10
38 15
39 13
40 12
41 9
42 10
43 11
44 8
45 9
46 4
47 6
48 2
49 2
50 2
51 52 2
53 54 1
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 167 26 - 54 39 mph 45 mph 34 - 43 114 68% 10% / 17 22% / 36

SPEED PARAMETERS
#10 - W Bayshore Rd Bet. E Meadow Dr & Loma Verde Ave
City of Palo Alto
Northbound & Southbound Spot Speeds
10:15-11:15
9/21/2023
Project #: 23-080265-010
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26 1
27 28 1
29 1
30 31
32 1
33 5
34 3
35 6
36 4
37 5
38 8
39 3
40 6
41 6
42 5
43 9
44 6
45 6
46 3
47 5
48 2
49 1
50 2
51 52 2
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 91 26 - 52 41 mph 46 mph 35 - 44 58 64% 13% / 12 24% / 21

SPEED PARAMETERS
#10 - W Bayshore Rd Bet. E Meadow Dr & Loma Verde Ave
City of Palo Alto
Northbound Spot Speeds
10:15-11:15
9/21/2023
Project #: 23-080265-010
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 35 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30 1
31 1
32 3
33 3
34 6
35 8
36 7
37 5
38 7
39 10
40 6
41 3
42 5
43 2
44 2
45 3
46 1
47 1
48 49 1
50 51
52 53
54 1
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 76 30 - 54 38 mph 42 mph 33 - 42 60 79% 6% / 5 15% / 11

SPEED PARAMETERS
#10 - W Bayshore Rd Bet. E Meadow Dr & Loma Verde Ave
City of Palo Alto
Southbound Spot Speeds
10:15-11:15
9/21/2023
Project #: 23-080265-010
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_010
NB SB EB WB Total
2,323 2,151 0 0 4,474

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 10 1 12:00 28 32 60 00:00 01:00 72 9
00:15 52 7 12:15 35 18 53 01:00 02:00 52 7
00:30 10 1 12:30 25 16 41 02:00 03:00 44 8
00:45 00 0 12:45 29 23 52 03:00 04:00 21 3
01:00 11 2 13:00 39 17 56 04:00 05:00 35 8
01:15 20 2 13:15 19 20 39 05:00 06:00 31 8 21
01:30 10 1 13:30 31 21 52 06:00 07:00 38 29 67
01:45 11 2 13:45 32 24 56 07:00 08:00 87 128 215
02:00 00 0 14:00 39 17 56 08:00 09:00 217 279 496
02:15 01 1 14:15 36 23 59 09:00 10:00 128 184 312
02:30 32 5 14:30 54 28 82 10:00 11:00 87 112 199
02:45 11 2 14:45 34 31 65 11:00 12:00 104 94 198
03:00 00 0 15:00 43 47 90 12:00 13:00 117 89 206
03:15 11 2 15:15 70 50 120 13:00 14:00 121 82 203
03:30 00 0 15:30 71 44 115 14:00 15:00 163 99 262
03:45 10 1 15:45 43 48 91 15:00 16:00 227 189 416
04:00 00 0 16:00 54 44 98 16:00 17:00 231 204 435
04:15 12 3 16:15 61 56 117 17:00 18:00 319 289 608
04:30 20 2 16:30 58 45 103 18:00 19:00 175 143 318
04:45 03 3 16:45 58 59 117 19:00 20:00 110 96 206
05:00 01 1 17:00 104 60 164 20:00 21:00 90 56 146
05:15 02 2 17:15 69 65 134 21:00 22:00 45 24 69
05:30 17 8 17:30 66 84 150 22:00 23:00 22 11 33
05:45 28 10 17:45 80 80 160 23:0 0 00:00 18 11 29
06:00 10 3 13 18:00 51 47 98
06:15 55 10 18:15 44 39 83 NB SB EB WB TOTA L
06:30 10 10 20 18:30 38 30 68 00:00 to 12:00
06:45 13 11 24 18:45 42 27 69 685 858 1543
07:00 91 6 25 19:00 35 38 73 7:45 7:45 7:45
07:15 12 21 33 19:15 32 23 55 219 281 500
07:30 20 24 44 19:30 18 14 32 0.805 0.789 0.796
07:45 46 67 113 19:45 25 21 46
08:00 68 89 157 20:00 17 17 34 12:00 to 00:00
08:15 61 73 134 20:15 19 10 29 1638 1293 2931
08:30 44 52 96 20:30 23 15 38 17:00 17:00 17:00
08:45 44 65 109 20:45 31 14 45 319 289 608
09:00 39 59 98 21:00 17 5 22 0.767 0.860 0.927
09:15 36 52 88 21:15 15 4 19
09:30 24 46 70 21:30 89 17 07:00 to 09:00
09:45 29 27 56 21:45 56 11 304 407 711
10:00 24 33 57 22:00 91 10 7:45 7:45 7:45
10:15 20 30 50 22:15 63 9 219 281 500
10:30 16 23 39 22:30 54 9 0.805 0.789 0.796
10:45 27 26 53 22:45 23 5
11:00 14 25 39 23:00 53 8 16:00 to 18:00
11:15 30 23 53 23:15 46 10 550 493 1043
11:30 24 17 41 23:30 71 8 17:00 17:00 17:00
11:45 36 29 65 23:45 21 3 319 289 608
TOTALS 685 858 0 0 1543 TOTALS 1638 1293 0 0 2931 0.767 0.860 0.927 SPLIT % 44% 56% 0% 0% 34% SPLIT % 56% 44% 0% 0% 66%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#10 ‐ W Bayshore Rd Bet. E Meadow Dr & Loma Verde Ave
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
300
350
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #11
Street: Charleston Rd.

Limits: El Camino Real to Alma St.

Direction: EB/WB
Date /Location of Survey 9/27/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 211
85th Percentile (mph) 36
10 mph Pace 28-37
Percent in Pace 80%
Average Daily Traffic (ADT) 12,832
Length of Segment (mi.) 0.40
Street Classification Residential Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 5
Accident Rate (Acc/MVM) 0.88
Statewide Average Accident Rate 1.46
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides.

An undivided 4-lane residential arterial. Double yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals present at intersections with Alma St., Wilkie Wy., and El Camino Real. Side street stop control at remaining intersections. Left-turn storage bays on segment and side streets present at intersections with Wilkie Wy. and El Camino Real. Marked crosswalks present at all intersections. No on-street parking permitted on either side. No school zone present, though a preschool is present on the southern side near El Camino Real. No horizontal curves present. Minimal vertical curves. Segment has easterly negative grade. Driveway density high on both sides from Park Blvd. to Wilkie Wy., and on northern side south of Wilkie Wy. One driveway to preschool on southern side south of Wilkie Wy. At-grade railroad crossing present adjacent to intersection with Alma St.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 36 --> 35 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a preschool, concrete sidewalks, Class II bike lanes, and marked crosswalks:
30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 2
23 1
24 4
25 5
26 4
27 7
28 9
29 17
30 20
31 20
32 24
33 24
34 19
35 14
36 12
37 10
38 6
39 3
40 2
41 1
42 1
43 44 2
45 2
46 1
47 1
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 211 22 - 47 32 mph 36 mph 28 - 37 169 80% 10% / 23 10% / 19

SPEED PARAMETERS
#11 - W Charleston Rd Bet. Ruthelma Ave & Wilkie Way
City of Palo Alto
Northbound & Southbound Spot Speeds
12:00-12:50
9/27/2023
Project #: 23-080265-011
0 5 10 15 20 25 30
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 1
24 3
25 3
26 2
27 4
28 6
29 9
30 11
31 12
32 13
33 12
34 8
35 6
36 3
37 4
38 3
39 40
41 42 1
43 44 1
45 46
47 1
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 104 22 - 47 31 mph 35 mph 27 - 36 84 81% 9% / 10 10% / 10

SPEED PARAMETERS
#11 - W Charleston Rd Bet. Ruthelma Ave & Wilkie Way
City of Palo Alto
Northbound Spot Speeds
12:00-12:50
9/27/2023
Project #: 23-080265-011
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 24 1
25 2
26 2
27 3
28 3
29 8
30 9
31 8
32 11
33 12
34 11
35 8
36 9
37 6
38 3
39 3
40 2
41 1
42 43
44 1
45 2
46 1
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 107 22 - 46 33 mph 37 mph 28 - 37 85 79% 8% / 9 13% / 13

SPEED PARAMETERS
#11 - W Charleston Rd Bet. Ruthelma Ave & Wilkie Way
City of Palo Alto
Southbound Spot Speeds
12:00-12:50
9/27/2023
Project #: 23-080265-011
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_011
NB SB EB WB Total
6,624 6,208 0 0 12,832

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 21 6 27 12:00 101 71 172 00:00 01:00 39 21 60
00:15 86 14 12:15 110 92 202 01:00 02:00 15 14 29
00:30 87 15 12:30 108 105 213 02:00 03:00 14 6 20
00:45 22 4 12:45 125 88 213 03:00 04:00 68 14
01:00 42 6 13:00 88 77 165 04:00 05:00 10 32 42
01:15 23 5 13:15 102 86 188 05:00 06:00 40 83 123
01:30 32 5 13:30 110 95 205 06:00 07:00 89 201 290
01:45 67 13 13:45 116 87 203 07:00 08:00 340 429 769
02:00 31 4 14:00 112 92 204 08:00 09:00 570 653 1223
02:15 51 6 14:15 100 99 199 09:00 10:00 501 386 887
02:30 33 6 14:30 141 92 233 10:00 11:00 331 325 656
02:45 31 4 14:45 143 93 236 11:00 12:00 405 348 753
03:00 01 1 15:00 123 92 215 12:00 13:00 444 356 800
03:15 34 7 15:15 130 137 267 13:00 14:00 416 345 761
03:30 32 5 15:30 156 113 269 14:00 15:00 496 376 872
03:45 01 1 15:45 135 142 277 15:00 16:00 544 484 1028
04:00 25 7 16:00 153 116 269 16:00 17:00 563 440 1003
04:15 14 5 16:15 141 103 244 17:00 18:00 532 517 1049
04:30 39 12 16:30 147 101 248 18:00 19:00 424 380 804
04:45 41 4 18 16:45 122 120 242 19:00 20:00 311 333 644 05:00 61 6 22 17:00 145 126 271 20:00 21:00 234 232 466 05:15 77 14 17:15 123 134 257 21:00 22:00 151 112 263
05:30 92 0 29 17:30 138 131 269 22:00 23:00 86 69 155
05:45 18 40 58 17:45 126 126 252 23:0 0 00:00 63 58 121 06:00 11 42 53 18:00 114 119 233
06:15 23 47 70 18:15 101 81 182 NB SB EB WB TOTA L
06:30 24 44 68 18:30 112 92 204 00:00 to 12:00
06:45 31 68 99 18:45 97 88 185 2360 2506 4866
07:00 54 92 146 19:00 90 87 177 8:15 8:00 8:00
07:15 53 80 133 19:15 83 80 163 598 653 1223
07:30 107 118 225 19:30 72 81 153 0.971 0.841 0.881
07:45 126 139 265 19:45 66 85 151
08:00 126 164 290 20:00 55 59 114 12:00 to 00:00
08:15 147 150 297 20:15 68 61 129 4264 3702 7966
08:30 153 194 347 20:30 53 44 97 15:30 17:00 15:15
08:45 144 145 289 20:45 58 68 126 585 517 1082
09:00 154 91 245 21:00 52 51 103 0.938 0.965 0.977
09:15 118 115 233 21:15 36 27 63
09:30 119 86 205 21:30 41 10 51 07:00 to 09:00
09:45 110 94 204 21:45 22 24 46 910 1082 1992
10:00 87 71 158 22:00 23 22 45 8:00 8:00 8:00
10:15 102 87 189 22:15 25 16 41 570 653 1223
10:30 65 68 133 22:30 22 17 39 0.931 0.841 0.881
10:45 77 99 176 22:45 16 14 30
11:00 88 82 170 23:00 23 13 36 16:00 to 18:00
11:15 111 90 201 23:15 15 17 32 1095 957 2052
11:30 110 94 204 23:30 10 17 27 16:00 17:00 17:00
11:45 96 82 178 23:45 15 11 26 563 517 1049
TOTALS 2360 2506 0 0 4866 TOTALS 4264 3702 0 0 7966 0.920 0.965 0.968 SPLIT % 48% 52% 0% 0% 38% SPLIT % 54% 46% 0% 0% 62%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#11 ‐ W Charleston Rd Bet. Ruthelma Ave & Wilkie Way
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 100
200
300
400
500
600
700
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #12
Street: Charleston Rd.

Limits: Alma St. to Middlefield Rd.

Direction: EB/WB
Date /Location of Survey 9/27/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 175
85th Percentile (mph) 35
10 mph Pace 25-34
Percent in Pace 77%
Average Daily Traffic (ADT) 9,752
Length of Segment (mi.) 0.58
Street Classification Residential Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 7
Accident Rate (Acc/MVM) 1.12
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on southern side. Residential and institutional (schools and church) land uses on northern side.

A divided 2- to 4-lane residential arterial. Raised median serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals present at intersections with Alma St., Carlson Ct., Nelson Dr., and Middlefield Rd. Left-turn storage bays present on segment and some side streets. U-turn storage bay present for eastbound direction. Marked crosswalks present at most intersections. No on-street parking permitted on northern side. On-stree parking present on portions of southern side. School zone is present. Horizontal curve present at Mumford Pl. Vertical curve present at Adobe Creek. Segment slopes positively easterly.

Driveway density high on southern side and moderate on northern side. Raised median designed to accommodate turning storage bays for vehicles ingressing/egressing school driveways. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 35 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including an elementary school, religious facilities, concrete sidewalks, bikeways, marked crosswalks, and transit stops: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 2
22 2
23 1
24 6
25 11
26 7
27 12
28 16
29 18
30 17
31 15
32 16
33 13
34 10
35 8
36 5
37 3
38 4
39 2
40 4
41 2
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 175 19 - 41 30 mph 35 mph 25 - 34 135 77% 6% / 12 16% / 28

SPEED PARAMETERS
#12 - E Charleston Rd Bet. Carlson Ct & Mumford Pl
City of Palo Alto
Northbound & Southbound Spot Speeds
09:30-10:30
9/27/2023
Project #: 23-080265-012
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 1
22 23
24 3
25 4
26 3
27 6
28 6
29 9
30 6
31 7
32 10
33 7
34 7
35 4
36 3
37 2
38 3
39 1
40 3
41 2
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 88 19 - 41 31 mph 36 mph 25 - 34 65 74% 5% / 5 21% / 18

SPEED PARAMETERS
#12 - E Charleston Rd Bet. Carlson Ct & Mumford Pl
City of Palo Alto
Northbound Spot Speeds
09:30-10:30
9/27/2023
Project #: 23-080265-012
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 2
23 1
24 3
25 7
26 4
27 6
28 10
29 9
30 11
31 8
32 6
33 6
34 3
35 4
36 2
37 1
38 1
39 1
40 1
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 87 21 - 40 30 mph 33 mph 24 - 33 70 80% 4% / 4 15% / 13

SPEED PARAMETERS
#12 - E Charleston Rd Bet. Carlson Ct & Mumford Pl
City of Palo Alto
Southbound Spot Speeds
09:30-10:30
9/27/2023
Project #: 23-080265-012
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_012
NB SB EB WB Total
0 0 5,392 4,360 9,752

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 20 5 25 12:00 86 71 157 00:00 01:00 34 17 51
00:15 64 10 12:15 72 63 135 01:00 02:00 11 10 21
00:30 57 12 12:30 83 87 170 02:00 03:00 10 3 13
00:45 31 4 12:45 95 69 164 03:00 04:00 57 12
01:00 31 4 13:00 82 81 163 04:00 05:00 12 26 38
01:15 23 5 13:15 67 78 145 05:00 06:00 40 49 89
01:30 40 4 13:30 82 72 154 06:00 07:00 93 106 199
01:45 26 8 13:45 101 60 161 07:00 08:00 300 206 506
02:00 21 3 14:00 101 81 182 08:00 09:00 468 325 793
02:15 50 5 14:15 77 84 161 09:00 10:00 445 235 680
02:30 21 3 14:30 95 72 167 10:00 11:00 319 196 515
02:45 11 2 14:45 101 59 160 11:00 12:00 355 284 639
03:00 00 0 15:00 95 72 167 12:00 13:00 336 290 626
03:15 32 5 15:15 86 95 181 13:00 14:00 332 291 623
03:30 23 5 15:30 99 81 180 14:00 15:00 374 296 670
03:45 02 2 15:45 108 75 183 15:00 16:00 388 323 711
04:00 23 5 16:00 118 82 200 16:00 17:00 463 267 730
04:15 13 4 16:15 120 56 176 17:00 18:00 402 405 807
04:30 37 10 16:30 137 63 200 18:00 19:00 346 299 645
04:45 61 3 19 16:45 88 66 154 19:00 20:00 262 328 590
05:00 71 3 20 17:00 100 86 186 20:00 21:00 159 185 344
05:15 66 12 17:15 104 104 208 21:00 22:00 114 100 214
05:30 61 1 17 17:30 98 106 204 22:00 23:00 72 58 130
05:45 21 19 40 17:45 100 109 209 23:0 0 00:00 52 54 106 06:00 13 27 40 18:00 96 93 189
06:15 18 23 41 18:15 91 74 165 NB SB EB WB TOTA L
06:30 23 23 46 18:30 72 72 144 00:00 to 12:00
06:45 39 33 72 18:45 87 60 147 2092 1464 3556
07:00 46 54 100 19:00 78 83 161 8:15 8:00 8:15
07:15 51 31 82 19:15 62 83 145 507 325 832
07:30 82 60 142 19:30 70 89 159 0.845 0.804 0.954
07:45 121 61 182 19:45 52 73 125
08:00 111 68 179 20:00 35 47 82 12:00 to 00:00
08:15 114 101 215 20:15 40 48 88 3300 2896 6196
08:30 125 92 217 20:30 32 36 68 15:45 17:15 17:15
08:45 118 64 182 20:45 52 54 106 483 412 810
09:00 150 68 218 21:00 39 41 80 0.881 0.945 0.969
09:15 111 68 179 21:15 26 21 47
09:30 92 56 148 21:30 26 17 43 07:00 to 09:00
09:45 92 43 135 21:45 23 21 44 768 531 1299
10:00 67 40 107 22:00 20 16 36 7:45 8:00 7:45
10:15 95 56 151 22:15 21 16 37 471 325 793
10:30 72 45 117 22:30 22 12 34 0.942 0.804 0.914
10:45 85 55 140 22:45 91 4 23
11:00 81 65 146 23:00 17 11 28 16:00 to 18:00
11:15 107 64 171 23:15 18 16 34 865 672 1537
11:30 89 84 173 23:30 61 9 25 16:00 17:00 17:00
11:45 78 71 149 23:45 11 8 19 463 405 807
TOTALS 0 0 2092 1464 3556 TOTALS 0 0 3300 2896 6196 0.845 0.929 0.965 SPLIT % 0% 0% 59% 41% 36% SPLIT % 0% 0% 53% 47% 64%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#12 ‐ E Charleston Rd Bet. Carlson Ct & Mumford Pl
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #13
Street: Charleston Rd.

Limits: Middlefield Rd. to Fabian Way
Direction: EB/WB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 204
85th Percentile (mph) 37
10 mph Pace 26-35
Percent in Pace 70%
Average Daily Traffic (ADT) 11,840
Length of Segment (mi.) 0.36
Street Classification Residential Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 9
Accident Rate (Acc/MVM) 1.93
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides, with exception of commercial automobile dealership at intersection with Fabian Wy.

A divided 2-lane residential arterial. Raised median serves as median. Two-way left-turn lane serves as median at intersections with Sutherland Dr. and Grove Ave. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals present at intersections with Middlefield Rd., Louis Rd./Montrose Ave., and Fabian Wy. Left-turn storage bays and right-turn storage bays present on segment and side streets at some intersections. Marked crosswalks present at all intersections. On-street parking present on some sections of both sides. No school zone present. Horizontal curve present between intersections with Louis Rd./Montrose Ave. and Fabian Wy. No major vertical curves present. Segment slopes negatively easterly. Driveway density high on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 37 --> 35 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including concrete sidewalks, Class II bike lanes, and marked crosswalks: 30 --> 25 Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 2
23 4
24 7
25 8
26 9
27 13
28 13
29 17
30 17
31 14
32 14
33 17
34 16
35 13
36 7
37 10
38 5
39 4
40 4
41 2
42 2
43 1
44 1
45 2
46 1
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 204 21 - 46 31 mph 37 mph 26 - 35 143 70% 10% / 22 20% / 39

SPEED PARAMETERS
#13 - E Charleston Rd Bet. Grove Ave & Louis Rd
City of Palo Alto
Eastbound & Westbound Spot Speeds
11:15-12:05
9/21/2023
Project #: 23-080265-013
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 2
24 4
25 5
26 4
27 5
28 7
29 6
30 8
31 7
32 5
33 10
34 8
35 7
36 5
37 6
38 3
39 2
40 3
41 1
42 2
43 1
44 1
45 1
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 104 22 - 45 32 mph 37 mph 28 - 37 69 66% 20% / 21 14% / 14

SPEED PARAMETERS
#13 - E Charleston Rd Bet. Grove Ave & Louis Rd
City of Palo Alto
Eastbound Spot Speeds
11:15-12:05
9/21/2023
Project #: 23-080265-013
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 1
23 2
24 3
25 3
26 5
27 8
28 6
29 11
30 9
31 7
32 9
33 7
34 8
35 6
36 2
37 4
38 2
39 2
40 1
41 1
42 43
44 45 1
46 1
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 21 - 46 31 mph 35 mph 26 - 35 76 76% 10% / 10 14% / 14

SPEED PARAMETERS
#13 - E Charleston Rd Bet. Grove Ave & Louis Rd
City of Palo Alto
Westbound Spot Speeds
11:15-12:05
9/21/2023
Project #: 23-080265-013
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_013
NB SB EB WB Total
0 0 6,479 5,361 11,840

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 18 7 25 12:00 109 90 199 00:00 01:00 33 26 59
00:15 81 0 18 12:15 101 85 186 01:00 02:00 11 9 20
00:30 66 12 12:30 110 79 189 02:00 03:00 11 5 16
00:45 13 4 12:45 106 82 188 03:00 04:00 55 10
01:00 41 5 13:00 99 80 179 04:00 05:00 15 23 38
01:15 12 3 13:15 76 105 181 05:00 06:00 52 52 104
01:30 31 4 13:30 78 80 158 06:00 07:00 106 110 216
01:45 35 8 13:45 100 94 194 07:00 08:00 291 335 626
02:00 31 4 14:00 111 98 209 08:00 09:00 693 408 1101
02:15 42 6 14:15 81 89 170 09:00 10:00 519 280 799
02:30 31 4 14:30 115 69 184 10:00 11:00 332 230 562
02:45 11 2 14:45 105 98 203 11:00 12:00 430 310 740
03:00 10 1 15:00 115 97 212 12:00 13:00 426 336 762
03:15 21 3 15:15 130 104 234 13:00 14:00 353 359 712
03:30 23 5 15:30 120 92 212 14:00 15:00 412 354 766
03:45 01 1 15:45 107 104 211 15:00 16:00 472 397 869
04:00 15 6 16:00 116 87 203 16:00 17:00 478 360 838
04:15 34 7 16:15 125 72 197 17:00 18:00 546 558 1104
04:30 54 9 16:30 129 91 220 18:00 19:00 407 392 799
04:45 61 0 16 16:45 108 110 218 19:00 20:00 368 337 705 05:00 10 12 22 17:00 116 118 234 20:00 21:00 201 240 441 05:15 17 13 30 17:15 142 135 277 21:00 22:00 142 107 249 05:30 10 12 22 17:30 133 144 277 22:00 23:00 120 64 184 05:45 15 15 30 17:45 155 161 316 23:0 0 00:00 56 64 120 06:00 23 29 52 18:00 127 113 240
06:15 16 18 34 18:15 98 102 200 NB SB EB WB TOTA L
06:30 27 30 57 18:30 93 86 179 00:00 to 12:00
06:45 40 33 73 18:45 89 91 180 2498 1793 4291
07:00 56 69 125 19:00 116 80 196 8:00 7:45 8:00
07:15 51 44 95 19:15 98 81 179 693 460 1101
07:30 94 92 186 19:30 79 80 159 0.952 0.885 0.943
07:45 90 130 220 19:45 75 96 171
08:00 174 118 292 20:00 42 77 119 12:00 to 00:00
08:15 182 98 280 20:15 58 56 114 3981 3568 7549
08:30 175 114 289 20:30 52 34 86 17:15 17:00 17:15
08:45 162 78 240 20:45 49 73 122 557 558 1110
09:00 154 85 239 21:00 46 27 73 0.898 0.866 0.878
09:15 149 80 229 21:15 40 33 73
09:30 105 69 174 21:30 29 24 53 07:00 to 09:00
09:45 111 46 157 21:45 27 23 50 984 743 1727
10:00 69 58 127 22:00 45 17 62 8:00 7:45 8:00
10:15 87 55 142 22:15 31 16 47 693 460 1101
10:30 92 50 142 22:30 27 13 40 0.952 0.885 0.943
10:45 84 67 151 22:45 17 18 35
11:00 85 98 183 23:00 18 14 32 16:00 to 18:00
11:15 126 65 191 23:15 17 20 37 1024 918 1942
11:30 116 79 195 23:30 10 19 29 17:00 17:00 17:00
11:45 103 68 171 23:45 11 11 22 546 558 1104
TOTALS 0 0 2498 1793 4291 TOTALS 0 0 3981 3568 7549 0.881 0.866 0.873 SPLIT % 0% 0% 58% 42% 36% SPLIT % 0% 0% 53% 47% 64%
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#13 ‐ E Charleston Rd Bet. Grove Ave & Louis Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
0 100
200
300
400
500
600
700
800
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #14
Street: Deer Creek Rd.

Limits: Page Mill Rd. to Arastradero Rd.

Direction: NB/SB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 40
# Speed Data Collected 178
85th Percentile (mph) 38
10 mph Pace 30-39
Percent in Pace 62%
Average Daily Traffic (ADT) 4,308
Length of Segment (mi.) 0.70
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 8
Accident Rate (Acc/MVM) 2.42
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial (office and equestrian) land uses on both sides.

An undivided 2-lane local/collector. Two-way left-turn lane serves as median. Concrete sidewalks present on southern side east of Tesla HQ central driveway. Class II bike lanes on both sides. Signal present at intersection with Page Mill Rd. Left-turn storage bays and right-turn storage bays present on segment at intersections with Page Mill Rd. and Arastradero Rd. Marked crosswalks present at intersections with Page Mill Rd. and Arastradero Rd. Midblock crossing present near Maple Leaf Equestrian driveway. No on- street parking permitted on either side. No school zone present. Gentle horizontal and vertical curves present throughout segment.

Low driveway density on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 38 --> 40 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 40 --> 35
Speed Limit Change? Yes
Existing Speed Limit: 40 Recommended Speed Limit: 35
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 40 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 1
21 22 2
23 2
24 3
25 11
26 10
27 8
28 7
29 8
30 12
31 12
32 9
33 13
34 9
35 15
36 13
37 8
38 11
39 9
40 6
41 1
42 2
43 1
44 1
45 3
46 47
48 49
50 51 1
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 178 20 - 51 33 mph 38 mph 30 - 39 111 62% 29% / 52 9% / 15

SPEED PARAMETERS
#14 - Deer Creek Rd E/O CR G3/Page Mill Rd
City of Palo Alto
Eastbound & Westbound Spot Speeds
09:00-10:00
9/28/2023
Project #: 23-080265-014
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 40 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 1
21 22 1
23 2
24 3
25 6
26 5
27 4
28 3
29 3
30 6
31 5
32 4
33 7
34 6
35 8
36 9
37 5
38 5
39 3
40 3
41 42 2
43 44
45 2
46 47
48 49
50 51 1
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 94 20 - 51 33 mph 38 mph 29 - 38 58 62% 26% / 25 12% / 11

SPEED PARAMETERS
#14 - Deer Creek Rd E/O CR G3/Page Mill Rd
City of Palo Alto
Eastbound Spot Speeds
09:00-10:00
9/28/2023
Project #: 23-080265-014
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 40 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 24
25 5
26 5
27 4
28 4
29 5
30 6
31 7
32 5
33 6
34 3
35 7
36 4
37 3
38 6
39 6
40 3
41 1
42 43 1
44 1
45 1
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 84 22 - 45 32 mph 39 mph 30 - 39 53 63% 28% / 24 9% / 7

SPEED PARAMETERS
#14 - Deer Creek Rd E/O CR G3/Page Mill Rd
City of Palo Alto
Westbound Spot Speeds
09:00-10:00
9/28/2023
Project #: 23-080265-014
02468
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_014
NB SB EB WB Total
0 0 2,319 1,989 4,308

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 05 5 12:00 27 32 59 00:00 01:00 26 8
00:15 01 1 12:15 27 26 53 01:00 02:00 01 1
00:30 00 0 12:30 24 29 53 02:00 03:00 24 6
00:45 20 2 12:45 29 25 54 03:00 04:00 13 17 30
01:00 01 1 13:00 18 19 37 04:00 05:00 15 4 19
01:15 00 0 13:15 13 26 39 05:00 06:00 39 12 51
01:30 00 0 13:30 22 27 49 06:00 07:00 86 34 120
01:45 00 0 13:45 24 17 41 07:00 08:00 247 64 311
02:00 11 2 14:00 20 35 55 08:00 09:00 417 85 502
02:15 02 2 14:15 19 30 49 09:00 10:00 470 82 552
02:30 01 1 14:30 15 40 55 10:00 11:00 222 85 307
02:45 10 1 14:45 34 32 66 11:00 12:00 111 92 203
03:00 12 3 15:00 21 53 74 12:00 13:00 107 112 219
03:15 31 3 16 15:15 35 48 83 13:00 14:00 77 89 166
03:30 31 4 15:30 25 53 78 14:00 15:00 88 137 225
03:45 61 7 15:45 22 40 62 15:00 16:00 103 194 297
04:00 61 7 16:00 17 47 64 16:00 17:00 78 219 297
04:15 10 1 16:15 26 59 85 17:00 18:00 84 277 361
04:30 42 6 16:30 18 66 84 18:00 19:00 68 214 282
04:45 41 5 16:45 17 47 64 19:00 20:00 31 140 171
05:00 94 13 17:00 23 80 103 20:00 21:00 24 63 87
05:15 43 7 17:15 20 76 96 21:00 22:00 15 28 43
05:30 84 12 17:30 18 60 78 22:00 23:00 81 9 27
05:45 18 1 19 17:45 23 61 84 23:0 0 00:00 12 11 23
06:00 10 5 15 18:00 13 54 67
06:15 22 8 30 18:15 16 57 73 NB SB EB WB TOTA L
06:30 19 12 31 18:30 18 60 78 00:00 to 12:00
06:45 35 9 44 18:45 21 43 64 1624 486 2110
07:00 36 12 48 19:00 10 44 54 8:45 10:45 8:45
07:15 44 9 53 19:15 12 35 47 483 100 561
07:30 69 18 87 19:30 53 1 36 0.951 0.781 0.954
07:45 98 25 123 19:45 43 0 34
08:00 126 26 152 20:00 42 2 26 12:00 to 00:00
08:15 88 24 112 20:15 32 0 23 695 1503 2198
08:30 85 18 103 20:30 71 1 18 14:45 17:00 17:00
08:45 118 17 135 20:45 10 10 20 115 277 361
09:00 118 19 137 21:00 41 3 17 0.821 0.866 0.876
09:15 127 20 147 21:15 17 8
09:30 120 22 142 21:30 54 9 07:00 to 09:00
09:45 105 21 126 21:45 54 9 664 149 813
10:00 68 20 88 22:00 38 11 8:00 7:30 8:00
10:15 65 20 85 22:15 34 7 417 93 502
10:30 39 13 52 22:30 15 6 0.827 0.894 0.826
10:45 50 32 82 22:45 12 3
11:00 24 21 45 23:00 31 4 16:00 to 18:00
11:15 36 23 59 23:15 24 6 162 496 658
11:30 26 24 50 23:30 33 6 16:15 17:00 17:00
11:45 25 24 49 23:45 43 7 84 277 361
TOTALS 0 0 1624 486 2110 TOTALS 0 0 695 1503 2198 0.808 0.866 0.876 SPLIT % 0% 0% 77% 23% 49% SPLIT % 0% 0% 32% 68% 51%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#14 ‐ Deer Creek Rd E/O CR G3/Page Mill Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #15
Street: El Camino Way
Limits: Los Robles Ave. to Maybell Ave.

Direction: NB/SB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 121
85th Percentile (mph) 28
10 mph Pace 20-29
Percent in Pace 87%
Average Daily Traffic (ADT) 3,465
Length of Segment (mi.) 0.35
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 0
Accident Rate (Acc/MVM) 0.00
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial land uses on western side. Commercial and multifamily residential on eastern side.

An undivided 2-lane local/collector. Double yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides north of Meadow Dr. Class II bike lane and Class III sharrow present south of Meadow Dr. Signals present at intersections with El Camino Rl./Los Robles Ave. and El Camino Rl./Maybell Ave. Stop control at Meadow Dr. Side street stop control at remaining intersections. Left-turn storage bays present on segment at signalized intersections. Right-turn storage bay also present on segment at El Camino Rl./Los Robles Ave. Marked crosswalks present at almost all intersections. Midblock crosswalk present approximately 330 feet north of intersection with Meadow Dr. On-street parking present on both sides. No school zone present. Horizontal curves present near signalized intersections and near intersection with Meadow Dr. Roadway is northerly sloped positively. Driveway density high on both sides. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 28 --> 30 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 1
18 1
19 3
20 4
21 7
22 10
23 13
24 17
25 18
26 13
27 9
28 10
29 4
30 4
31 1
32 3
33 1
34 35
36 37 1
38 1
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 121 17 - 38 25 mph 28 mph 20 - 29 105 87% 4% / 5 10% / 11

SPEED PARAMETERS
#15 - El Camino Way N/O James Rd
City of Palo Alto
Northbound & Southbound Spot Speeds
10:15-11:15
9/28/2023
Project #: 23-080265-015
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 2
20 1
21 3
22 4
23 7
24 9
25 11
26 8
27 5
28 5
29 2
30 2
31 1
32 2
33 1
34 35
36 37 1
38 1
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 66 18 - 38 25 mph 29 mph 21 - 30 56 85% 6% / 4 10% / 6

SPEED PARAMETERS
#15 - El Camino Way N/O James Rd
City of Palo Alto
Northbound Spot Speeds
10:15-11:15
9/28/2023
Project #: 23-080265-015
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 1
18 19 1
20 3
21 4
22 6
23 6
24 8
25 7
26 5
27 4
28 5
29 2
30 2
31 32 1
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 55 17 - 32 24 mph 28 mph 20 - 29 50 91% 3% / 2 6% / 3

SPEED PARAMETERS
#15 - El Camino Way N/O James Rd
City of Palo Alto
Southbound Spot Speeds
10:15-11:15
9/28/2023
Project #: 23-080265-015
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_015
NB SB EB WB Total
1,654 1,811 0 0 3,465

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 00 0 12:00 16 26 42 00:00 01:00 12 3
00:15 10 1 12:15 27 25 52 01:00 02:00 20 2
00:30 01 1 12:30 20 25 45 02:00 03:00 10 1
00:45 01 1 12:45 24 25 49 03:00 04:00 11 2
01:00 00 0 13:00 24 25 49 04:00 05:00 51 6
01:15 00 0 13:15 24 26 50 05:00 06:00 67 13
01:30 10 1 13:30 17 22 39 06:00 07:00 28 18 46
01:45 10 1 13:45 19 27 46 07:00 08:00 63 57 120
02:00 00 0 14:00 23 24 47 08:00 09:00 179 191 370
02:15 00 0 14:15 27 41 68 09:00 10:00 115 90 205
02:30 10 1 14:30 40 27 67 10:00 11:00 109 109 218
02:45 00 0 14:45 33 30 63 11:00 12:00 107 123 230
03:00 00 0 15:00 32 31 63 12:00 13:00 87 101 188
03:15 10 1 15:15 43 47 90 13:00 14:00 84 100 184
03:30 01 1 15:30 35 47 82 14:00 15:00 123 122 245
03:45 00 0 15:45 40 46 86 15:00 16:00 150 171 321
04:00 00 0 16:00 48 30 78 16:00 17:00 162 139 301
04:15 20 2 16:15 46 37 83 17:00 18:00 141 182 323
04:30 30 3 16:30 28 37 65 18:00 19:00 119 151 270
04:45 01 1 16:45 40 35 75 19:00 20:00 65 99 164
05:00 21 3 17:00 36 49 85 20:00 21:00 53 74 127
05:15 10 1 17:15 39 45 84 21:00 22:00 35 43 78
05:30 11 2 17:30 33 42 75 22:00 23:00 14 21 35
05:45 25 7 17:45 33 46 79 23:0 0 00:00 49 13
06:00 34 7 18:00 40 45 85
06:15 52 7 18:15 25 43 68 NB SB EB WB TOTA L
06:30 77 14 18:30 29 28 57 00:00 to 12:00
06:45 13 5 18 18:45 25 35 60 617 599 1216
07:00 11 6 17 19:00 25 28 53 8:00 8:15 8:15
07:15 10 8 18 19:15 19 27 46 179 205 382
07:30 19 17 36 19:30 14 23 37 0.734 0.674 0.803
07:45 23 26 49 19:45 72 1 28
08:00 36 18 54 20:00 22 18 40 12:00 to 00:00
08:15 39 42 81 20:15 12 15 27 1037 1212 2249
08:30 43 76 119 20:30 92 4 33 15:30 17:00 15:15
08:45 61 55 116 20:45 10 17 27 169 182 336
09:00 34 32 66 21:00 13 18 31 0.880 0.929 0.933
09:15 26 20 46 21:15 97 16
09:30 29 17 46 21:30 39 12 07:00 to 09:00
09:45 26 21 47 21:45 10 9 19 242 248 490
10:00 20 26 46 22:00 51 2 17 8:00 8:00 8:00
10:15 28 26 54 22:15 23 5 179 191 370
10:30 26 33 59 22:30 34 7 0.734 0.628 0.777
10:45 35 24 59 22:45 42 6
11:00 18 25 43 23:00 13 4 16:00 to 18:00
11:15 21 31 52 23:15 02 2 303 321 624
11:30 31 30 61 23:30 01 1 16:00 17:00 17:00
11:45 37 37 74 23:45 33 6 162 182 323
TOTALS 617 599 0 0 1216 TOTALS 1037 1212 0 0 2249 0.844 0.929 0.950 SPLIT % 51% 49% 0% 0% 35% SPLIT % 46% 54% 0% 0% 65%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#15 ‐ El Camino Way N/O James Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #16
Street: Hansen Way
Limits: El Camino Real to Page Mill Exp.

Direction: NB/SB/EB/WB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 30
# Speed Data Collected 161
85th Percentile (mph) 35
10 mph Pace 27-36
Percent in Pace 81%
Average Daily Traffic (ADT) 3,264
Length of Segment (mi.) 0.57
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 15
Accident Rate (Acc/MVM) 7.35
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial offices on both sides and commecial restaurant on northern side.

An undivided 2-lane local/collector. Double yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals present at intersections at Page Mill Rd. and El Camino Rl. Side street stop control at remaining intersections. Left-turn storage bay present on segment at intersection with Page Mill Rd. Marked crosswalks present at signalized intersections. Midblock crosswalks present near middle of segment. On-street parking present on both sides. No school zone present. Vertical curves and two horizontal curves and present near middle of segment. Segment slopes negatively easterly/northerly. Driveway density moderate on both sides. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 35 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
Speed Limit Change? No
Existing Speed Limit: 30 Recommended Speed Limit: 30
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24 2
25 5
26 6
27 9
28 12
29 18
30 18
31 19
32 17
33 11
34 10
35 10
36 7
37 5
38 39 3
40 1
41 3
42 1
43 1
44 45 1
46 1
47 48 1
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 161 24 - 48 31 mph 35 mph 27 - 36 131 81% 8% / 13 11% / 17

SPEED PARAMETERS
#16 - Hansen Way S/O SR 82/EI Camino Real
City of Palo Alto
Northbound & Southbound Spot Speeds
09:20-10:20
9/28/2023
Project #: 23-080265-016
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 2
26 3
27 3
28 8
29 12
30 10
31 8
32 8
33 5
34 5
35 3
36 2
37 1
38 39 1
40 1
41 2
42 1
43 44
45 1
46 1
47 48 1
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 78 25 - 48 31 mph 35 mph 26 - 35 65 83% 2% / 2 15% / 11

SPEED PARAMETERS
#16 - Hansen Way S/O SR 82/EI Camino Real
City of Palo Alto
Northbound Spot Speeds
09:20-10:20
9/28/2023
Project #: 23-080265-016
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22
23 24 2
25 3
26 3
27 6
28 4
29 6
30 8
31 11
32 9
33 6
34 5
35 7
36 5
37 4
38 39 2
40 41 1
42 43 1
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 83 24 - 43 31 mph 36 mph 27 - 36 67 81% 9% / 8 10% / 8

SPEED PARAMETERS
#16 - Hansen Way S/O SR 82/EI Camino Real
City of Palo Alto
Southbound Spot Speeds
09:20-10:20
9/28/2023
Project #: 23-080265-016
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_016
NB SB EB WB Total
1,687 1,577 0 0 3,264

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 0:00 02 2 12:00 31 21 52 00:00 01:00 95 14
0:15 72 9 12:15 22 36 58 01:00 02:00 25 7
0:30 10 1 12:30 29 23 52 02:00 03:00 48 12
0:45 11 2 12:45 27 37 64 03:00 04:00 01 0 10
1:00 11 2 13:00 20 38 58 04:00 05:00 63 9 45
1:15 12 3 13:15 21 15 36 05:00 06:00 89 6 104
1:30 01 1 13:30 21 29 50 06:00 07:00 18 105 123
1:45 01 1 13:45 20 32 52 07:00 08:00 66 87 153
2:00 22 4 14:00 25 22 47 08:00 09:00 102 145 247
2:15 02 2 14:15 30 17 47 09:00 10:00 107 169 276
2:30 22 4 14:30 50 20 70 10:00 11:00 110 108 218
2:45 02 2 14:45 29 16 45 11:00 12:00 126 97 223
3:00 00 0 15:00 30 15 45 12:00 13:00 109 117 226
3:15 02 2 15:15 45 16 61 13:00 14:00 82 114 196
3:30 01 1 15:30 33 14 47 14:00 15:00 134 75 209
3:45 07 7 15:45 25 15 40 15:00 16:00 133 60 193
4:00 17 8 16:00 52 14 66 16:00 17:00 209 65 274
4:15 14 5 16:15 45 15 60 17:00 18:00 157 72 229
4:30 18 9 16:30 56 18 74 18:00 19:00 140 96 236
4:45 32 0 23 16:45 56 18 74 19:00 20:00 72 54 126
5:00 19 10 17:00 42 24 66 20:00 21:00 36 18 54
5:15 22 5 27 17:15 41 16 57 21:00 22:00 26 23 49
5:30 32 4 27 17:30 40 15 55 22:00 23:00 17 6 23
5:45 23 8 40 17:45 34 17 51 23:0 0 00:00 14 3 17
6:00 42 9 33 18:00 41 26 67
6:15 31 9 22 18:15 31 22 53 NB SB EB WB TOTA L
6:30 53 4 39 18:30 36 26 62 00:00 to 12:00
6:45 62 3 29 18:45 32 22 54 558 874 1432
7:00 72 2 29 19:00 30 19 49 11:00 8:45 8:45
7:15 11 19 30 19:15 14 12 26 126 187 292
7:30 21 19 40 19:30 15 17 32 0.875 0.882 0.924
7:45 27 27 54 19:45 13 6 19
8:00 26 35 61 20:00 11 3 14 12:00 to 00:00
8:15 29 27 56 20:15 11 8 19 1129 703 1832
8:30 27 33 60 20:30 84 12 16:00 12:15 16:00
8:45 20 50 70 20:45 63 9 209 134 274
9:00 33 39 72 21:00 71 3 20 0.933 0.882 0.926
9:15 26 53 79 21:15 12 2 14
9:30 26 45 71 21:30 64 10 07:00 to 09:00
9:45 22 32 54 21:45 14 5 168 232 400
10:00 24 30 54 22:00 43 7 7:45 8:00 8:00
10:15 28 14 42 22:15 41 5 109 145 247
10:30 33 44 77 22:30 52 7 0.940 0.725 0.882
10:45 25 20 45 22:45 40 4
11:00 31 20 51 23:00 70 7 16:00 to 18:00
11:15 30 23 53 23:15 32 5 366 137 503
11:30 36 28 64 23:30 20 2 16:00 16:30 16:00
11:45 29 26 55 23:45 21 3 209 76 274
TOTALS 558 874 0 0 1432 TOTALS 1129 703 0 0 1832 0.933 0.792 0.926 SPLIT % 39% 61% 0% 0% 44% SPLIT % 62% 38% 0% 0% 56%
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#16 ‐ Hansen Way S/O SR 82/EI Camino Real
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
0 50
100
150
200
250
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #17
Street: Louis Rd.

Limits: Oregon Exp. to Loma Verde Rd.

Direction: NB/SB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 123
85th Percentile (mph) 30
10 mph Pace 22-31
Percent in Pace 83%
Average Daily Traffic (ADT) 2,312
Length of Segment (mi.) 0.82
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 17
Accident Rate (Acc/MVM) 8.22
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides.

An undivided 2-lane local/collector. Striped yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signal at intersection with Oregon Expy. Stop control at remaining intersections. Left-turn storage bay present on segment at intersection with Oregon Expy. Marked crosswalks present at intersections with Oregon Expy., Fielding Dr., Amarillo Ave., Colorado Ave., Elbridge Wy., and Loma Verde Ave. On-street parking present on southern side. No school zone present. No horizontal curves present. Vertical curves present in eastern half of segment. Driveway density high on both sides. Colored pavement used at intersections with Moreno Ave., Fielding Dr., and Amarillo Ave. to indicate high pedestrian presence. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 30 --> 30 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 2
18 2
19 3
20 3
21 2
22 8
23 4
24 9
25 16
26 12
27 16
28 14
29 11
30 6
31 6
32 3
33 3
34 1
35 1
36 1
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 123 17 - 36 27 mph 30 mph 22 - 31 102 83% 9% / 12 8% / 9

SPEED PARAMETERS
#17 - Louis Rd Bet. Colorado Ave & Clara Dr
City of Palo Alto
Eastbound & Westbound Spot Speeds
09:00-10:00
9/21/2023
Project #: 23-080265-017
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 2
18 1
19 1
20 1
21 1
22 2
23 1
24 5
25 8
26 8
27 7
28 8
29 6
30 3
31 4
32 2
33 1
34 1
35 36 1
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 63 17 - 36 27 mph 30 mph 22 - 31 52 83% 9% / 6 8% / 5

SPEED PARAMETERS
#17 - Louis Rd Bet. Colorado Ave & Clara Dr
City of Palo Alto
Eastbound Spot Speeds
09:00-10:00
9/21/2023
Project #: 23-080265-017
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 2
20 2
21 1
22 6
23 3
24 4
25 8
26 4
27 9
28 6
29 5
30 3
31 2
32 1
33 2
34 35 1
36 37
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 60 18 - 35 26 mph 29 mph 22 - 31 50 83% 10% / 6 7% / 4

SPEED PARAMETERS
#17 - Louis Rd Bet. Colorado Ave & Clara Dr
City of Palo Alto
Westbound Spot Speeds
09:00-10:00
9/21/2023
Project #: 23-080265-017
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_017
NB SB EB WB Total
0 0 1,194 1,118 2,312

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 21 3 12:00 32 25 57 00:00 01:00 44 8
00:15 01 1 12:15 13 20 33 01:00 02:00 22 4
00:30 11 2 12:30 19 13 32 02:00 03:00 11 2
00:45 11 2 12:45 19 14 33 03:00 04:00 00 0
01:00 00 0 13:00 20 17 37 04:00 05:00 21 3
01:15 11 2 13:15 10 19 29 05:00 06:00 71 8
01:30 10 1 13:30 17 23 40 06:00 07:00 25 14 39
01:45 01 1 13:45 19 15 34 07:00 08:00 50 62 112
02:00 00 0 14:00 26 20 46 08:00 09:00 118 121 239
02:15 11 2 14:15 32 27 59 09:00 10:00 82 66 148
02:30 00 0 14:30 33 22 55 10:00 11:00 58 54 112
02:45 00 0 14:45 35 30 65 11:00 12:00 63 71 134
03:00 00 0 15:00 18 28 46 12:00 13:00 83 72 155
03:15 00 0 15:15 24 21 45 13:00 14:00 66 74 140
03:30 00 0 15:30 16 22 38 14:00 15:00 126 99 225
03:45 00 0 15:45 28 28 56 15:00 16:00 86 99 185
04:00 11 2 16:00 23 28 51 16:00 17:00 102 100 202
04:15 00 0 16:15 29 24 53 17:00 18:00 108 84 192
04:30 00 0 16:30 26 25 51 18:00 19:00 79 60 139
04:45 10 1 16:45 24 23 47 19:00 20:00 57 46 103
05:00 00 0 17:00 19 20 39 20:00 21:00 31 46 77
05:15 10 1 17:15 34 24 58 21:00 22:00 18 24 42
05:30 11 2 17:30 29 20 49 22:00 23:00 17 11 28
05:45 50 5 17:45 26 20 46 23:0 0 00:00 96 15
06:00 62 8 18:00 32 14 46
06:15 31 4 18:15 22 19 41 NB SB EB WB TOTA L
06:30 43 7 18:30 14 13 27 00:00 to 12:00
06:45 12 8 20 18:45 11 14 25 412 397 809
07:00 68 14 19:00 23 12 35 7:45 7:45 7:45
07:15 96 15 19:15 14 13 27 126 131 257
07:30 81 8 26 19:30 12 10 22 0.768 0.780 0.793
07:45 27 30 57 19:45 81 1 19
08:00 41 35 76 20:00 91 7 26 12:00 to 00:00
08:15 39 42 81 20:15 91 0 19 782 721 1503
08:30 19 24 43 20:30 76 13 14:00 14:15 14:00
08:45 19 20 39 20:45 61 3 19 126 107 225
09:00 23 19 42 21:00 56 11 0.900 0.892 0.865
09:15 25 18 43 21:15 65 11
09:30 16 15 31 21:30 67 13 07:00 to 09:00
09:45 18 14 32 21:45 16 7 168 183 351
10:00 13 21 34 22:00 84 12 7:45 7:45 7:45
10:15 15 13 28 22:15 52 7 126 131 257
10:30 18 10 28 22:30 23 5 0.768 0.780 0.793
10:45 12 10 22 22:45 22 4
11:00 11 15 26 23:00 42 6 16:00 to 18:00
11:15 13 17 30 23:15 02 2 210 184 394
11:30 19 14 33 23:30 40 4 17:00 16:00 16:00
11:45 20 25 45 23:45 12 3 108 100 202
TOTALS 0 0 412 397 809 TOTALS 0 0 782 721 1503 0.794 0.893 0.953 SPLIT % 0% 0% 51% 49% 35% SPLIT % 0% 0% 52% 48% 65%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#17 ‐ Louis Rd Bet. Colorado Ave & Clara Dr
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 20
40 60
80 100
120
140
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #18
Street: Louis Rd.

Limits: Loma Verde Ave. to Charleston Rd.

Direction: NB/SB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 122
85th Percentile (mph) 25
10 mph Pace 17-26
Percent in Pace 92%
Average Daily Traffic (ADT) 2,077
Length of Segment (mi.) 1.06
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 11
Accident Rate (Acc/MVM) 4.58
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides. Institutional (school) on southern side.

An undivided 2-lane local/collector. Striped yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals at intersections with Oregon Expy. And Charleston Rd. Stop control at remaining intersections. No storage bays present. Marked crosswalks present at most intersections. On-street parking present on southern/western side. School zone is present. Horizontal curves present between intersections with Meadow Dr. and Charleston Rd. Vertical curves present throughout segment. Driveway density high on both sides. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 25 --> 25 Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 2
16 2
17 6
18 7
19 6
20 13
21 16
22 17
23 16
24 14
25 10
26 7
27 3
28 1
29 1
30 1
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 122 15 - 30 22 mph 25 mph 17 - 26 112 92% 3% / 4 5% / 6

SPEED PARAMETERS
#18 - Louis Rd Bet. E Meadow Dr & Corina Way
City of Palo Alto
Eastbound & Westbound Spot Speeds
11:35-12:35
9/21/2023
Project #: 23-080265-018
0 5 10 15 20
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 1
16 1
17 3
18 5
19 3
20 7
21 6
22 8
23 10
24 7
25 5
26 4
27 2
28 1
29 1
30 1
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 65 15 - 30 22 mph 25 mph 17 - 26 58 89% 3% / 2 8% / 5

SPEED PARAMETERS
#18 - Louis Rd Bet. E Meadow Dr & Corina Way
City of Palo Alto
Eastbound Spot Speeds
11:35-12:35
9/21/2023
Project #: 23-080265-018
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 1
16 1
17 3
18 2
19 3
20 6
21 10
22 9
23 6
24 7
25 5
26 3
27 1
28 29
30 31
32 33
34 35
36 37
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 57 15 - 27 22 mph 25 mph 17 - 26 54 95% 3% / 2 2% / 1

SPEED PARAMETERS
#18 - Louis Rd Bet. E Meadow Dr & Corina Way
City of Palo Alto
Westbound Spot Speeds
11:35-12:35
9/21/2023
Project #: 23-080265-018
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_018
NB SB EB WB Total
0 0 1,145 932 2,077

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 10 1 12:00 24 13 37 00:00 01:00 11 2
00:15 00 0 12:15 22 17 39 01:00 02:00 21 3
00:30 01 1 12:30 24 14 38 02:00 03:00 01 1
00:45 00 0 12:45 19 16 35 03:00 04:00 11 2
01:00 00 0 13:00 12 18 30 04:00 05:00 11 2
01:15 21 3 13:15 19 19 38 05:00 06:00 46 10
01:30 00 0 13:30 14 10 24 06:00 07:00 12 15 27
01:45 00 0 13:45 14 21 35 07:00 08:00 56 59 115
02:00 00 0 14:00 11 18 29 08:00 09:00 123 69 192
02:15 00 0 14:15 23 19 42 09:00 10:00 103 51 154
02:30 00 0 14:30 19 21 40 10:00 11:00 66 42 108
02:45 01 1 14:45 30 13 43 11:00 12:00 61 48 109
03:00 00 0 15:00 22 18 40 12:00 13:00 89 60 149
03:15 10 1 15:15 30 21 51 13:00 14:00 59 68 127
03:30 00 0 15:30 26 14 40 14:00 15:00 83 71 154
03:45 01 1 15:45 28 20 48 15:00 16:00 106 73 179
04:00 01 1 16:00 24 20 44 16:00 17:00 87 90 177
04:15 00 0 16:15 21 26 47 17:00 18:00 112 83 195
04:30 00 0 16:30 20 26 46 18:00 19:00 74 84 158
04:45 10 1 16:45 22 18 40 19:00 20:00 48 45 93
05:00 00 0 17:00 28 18 46 20:00 21:00 41 35 76
05:15 20 2 17:15 26 18 44 21:00 22:00 91 6 25
05:30 01 1 17:30 31 20 51 22:00 23:00 41 0 14
05:45 25 7 17:45 27 27 54 23:0 0 00:00 32 5
06:00 24 6 18:00 19 24 43
06:15 44 8 18:15 15 20 35 NB SB EB WB TOTA L
06:30 41 5 18:30 20 20 40 00:00 to 12:00
06:45 26 8 18:45 20 20 40 430 295 725
07:00 74 11 19:00 10 16 26 7:45 7:15 7:45
07:15 61 5 21 19:15 18 15 33 131 81 206
07:30 16 20 36 19:30 10 6 16 0.682 0.779 0.831
07:45 27 20 47 19:45 10 8 18
08:00 30 26 56 20:00 13 11 24 12:00 to 00:00
08:15 48 14 62 20:15 79 16 715 637 1352
08:30 26 15 41 20:30 98 17 17:00 15:45 17:00
08:45 19 14 33 20:45 12 7 19 112 92 195
09:00 25 14 39 21:00 33 6 0.903 0.885 0.903
09:15 29 11 40 21:15 28 10
09:30 25 15 40 21:30 21 3 07:00 to 09:00
09:45 24 11 35 21:45 24 6 179 128 307
10:00 20 14 34 22:00 13 4 7:45 7:15 7:45
10:15 11 11 22 22:15 24 6 131 81 206
10:30 18 9 27 22:30 01 1 0.682 0.779 0.831
10:45 17 8 25 22:45 12 3
11:00 17 10 27 23:00 00 0 16:00 to 18:00
11:15 15 15 30 23:15 20 2 199 173 372
11:30 11 12 23 23:30 11 2 17:00 16:00 17:00
11:45 18 11 29 23:45 01 1 112 90 195
TOTALS 0 0 430 295 725 TOTALS 0 0 715 637 1352 0.903 0.865 0.903 SPLIT % 0% 0% 59% 41% 35% SPLIT % 0% 0% 53% 47% 65%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#18 ‐ Louis Rd Bet. E Meadow Dr & Corina Way
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #19
Street: N. California Ave.

Limits: Embarcadero Rd. to Middlefield Rd.

Direction: EB/WB
Date /Location of Survey 9/27/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 100
85th Percentile (mph) 29
10 mph Pace 22-31
Percent in Pace 88%
Average Daily Traffic (ADT) 2,135
Length of Segment (mi.) 0.78
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 8
Accident Rate (Acc/MVM) 4.41
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides. Institutional (school) on southern side.

An undivided 2-lane local/collector. Striped yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides from Middlefield Rd. to Newell Rd. Class II bike lane on northern side and Class III sharrow on southern side from Newell Rd. to Louis Rd. Stop control at intersections throughout segment. No storage bays present. Marked crosswalks present at most intersections. On-street parking present on southern side from Newell Rd. to Louis Rd. On-street parking present on both sides from Louis Rd. to Embarcadero Rd. School zone is present. No horizontal curves present. Vertical curves present in northern half of segment. Segment slopes negatively northerly. Driveway density high on both sides. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 29 --> 30 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16 1
17 18 2
19 2
20 1
21 2
22 5
23 5
24 8
25 11
26 14
27 12
28 12
29 11
30 7
31 3
32 1
33 1
34 35 1
36 37
38 39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 100 16 - 39 26 mph 29 mph 22 - 31 88 88% 8% / 8 4% / 4

SPEED PARAMETERS
#19 - N California Ave S/O Barbara Dr
City of Palo Alto
Northbound & Southbound Spot Speeds
13:10-14:25
9/27/2023
Project #: 23-080265-019
0 5 10 15
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18 1
19 1
20 1
21 1
22 2
23 2
24 3
25 7
26 5
27 8
28 6
29 6
30 4
31 2
32 1
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 50 18 - 32 27 mph 29 mph 22 - 31 45 90% 8% / 4 2% / 1

SPEED PARAMETERS
#19 - N California Ave S/O Barbara Dr
City of Palo Alto
Northbound Spot Speeds
13:10-14:25
9/27/2023
Project #: 23-080265-019
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16 1
17 18 1
19 1
20 21 1
22 3
23 3
24 5
25 4
26 9
27 4
28 6
29 5
30 3
31 1
32 33 1
34 35 1
36 37
38 39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 50 16 - 39 26 mph 29 mph 21 - 30 43 86% 6% / 3 8% / 4

SPEED PARAMETERS
#19 - N California Ave S/O Barbara Dr
City of Palo Alto
Southbound Spot Speeds
13:10-14:25
9/27/2023
Project #: 23-080265-019
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_019
NB SB EB WB Total
1,189 946 0 0 2,135

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 00 0 12:00 61 6 22 00:00 01:00 10 1
00:15 00 0 12:15 11 7 18 01:00 02:00 00 0
00:30 00 0 12:30 12 14 26 02:00 03:00 02 2
00:45 10 1 12:45 12 8 20 03:00 04:00 00 0
01:00 00 0 13:00 48 12 04:00 05:00 01 1
01:15 00 0 13:15 61 2 18 05:00 06:00 31 4
01:30 00 0 13:30 10 7 17 06:00 07:00 99 18
01:45 00 0 13:45 86 14 07:00 08:00 78 77 155
02:00 01 1 14:00 12 7 19 08:00 09:00 260 256 516
02:15 01 1 14:15 14 10 24 09:00 10:00 78 42 120
02:30 00 0 14:30 27 14 41 10:00 11:00 26 28 54
02:45 00 0 14:45 16 14 30 11:00 12:00 39 54 93
03:00 00 0 15:00 51 38 89 12:00 13:00 41 45 86
03:15 00 0 15:15 56 37 93 13:00 14:00 28 33 61
03:30 00 0 15:30 32 17 49 14:00 15:00 69 45 114
03:45 00 0 15:45 24 16 40 15:00 16:00 163 108 271
04:00 00 0 16:00 34 12 46 16:00 17:00 116 57 173
04:15 00 0 16:15 30 9 39 17:00 18:00 154 104 258
04:30 01 1 16:30 23 18 41 18:00 19:00 55 36 91
04:45 00 0 16:45 29 18 47 19:00 20:00 33 19 52
05:00 01 1 17:00 44 29 73 20:00 21:00 26 16 42
05:15 10 1 17:15 36 24 60 21:00 22:00 58 13
05:30 00 0 17:30 40 24 64 22:00 23:00 43 7
05:45 20 2 17:45 34 27 61 23:0 0 00:00 12 3
06:00 12 3 18:00 13 7 20
06:15 12 3 18:15 11 10 21 NB SB EB WB TOTA L
06:30 64 10 18:30 21 9 30 00:00 to 12:00
06:45 11 2 18:45 10 10 20 494 470 964
07:00 25 7 19:00 13 5 18 7:45 7:45 7:45
07:15 68 14 19:15 77 14 285 278 563
07:30 15 14 29 19:30 95 14 0.685 0.764 0.722
07:45 55 50 105 19:45 42 6
08:00 84 71 155 20:00 11 5 16 12:00 to 00:00
08:15 104 91 195 20:15 45 9 695 476 1171
08:30 42 66 108 20:30 73 10 15:00 15:00 15:00
08:45 30 28 58 20:45 43 7 163 108 271
09:00 24 12 36 21:00 23 5 0.728 0.711 0.728
09:15 20 9 29 21:15 12 3
09:30 20 5 25 21:30 03 3 07:00 to 09:00
09:45 14 16 30 21:45 20 2 338 333 671
10:00 66 12 22:00 20 2 7:45 7:45 7:45
10:15 68 14 22:15 22 4 285 278 563
10:30 79 16 22:30 00 0 0.685 0.764 0.722
10:45 75 12 22:45 01 1
11:00 13 6 19 23:00 12 3 16:00 to 18:00
11:15 61 3 19 23:15 00 0 270 161 431
11:30 92 2 31 23:30 00 0 17:00 17:00 17:00
11:45 11 13 24 23:45 00 0 154 104 258
TOTALS 494 470 0 0 964 TOTALS 695 476 0 0 1171 0.875 0.897 0.884 SPLIT % 51% 49% 0% 0% 45% SPLIT % 59% 41% 0% 0% 55%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#19 ‐ N California Ave S/O Barbara Dr
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 50
100
150
200
250
300
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #20
Street: Park Blvd.

Limits: California Ave. to Lambert Ave.

Direction: NB/SB
Date /Location of Survey 9/21/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 115
85th Percentile (mph) 29
10 mph Pace 19-28
Percent in Pace 72%
Average Daily Traffic (ADT) 3,437
Length of Segment (mi.) 0.58
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 3
Accident Rate (Acc/MVM) 1.38
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Land uses on both sides include residential, commercial, and utilities (substation).

An undivided 2-lane local/collector. Striped yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signal at intersection with Page Mill Rd. Stop control at remaining intersections. Right-turn storage bay present on segment at intersection with Page Mill Rd. Marked crosswalks present at most intersections. On-street parking present on both sides at particular sections of segment. No school zone present. No horizontal curves present. Major vertical curves present at Oregon Expy. overcrossing. Broad vertical curves on eastern half of segment. Segment slopes positively easterly. Driveway density moderate on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 29 --> 30 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 2
16 17 4
18 6
19 3
20 4
21 5
22 11
23 10
24 12
25 7
26 12
27 9
28 10
29 3
30 4
31 4
32 4
33 2
34 35 2
36 37 1
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 115 15 - 37 25 mph 29 mph 19 - 28 83 72% 10% / 12 18% / 20

SPEED PARAMETERS
#20 - Park Blvd Bet. Olive Ave & Page Mill Rd
City of Palo Alto
Eastbound & Westbound Spot Speeds
14:15-15:40
9/21/2023
Project #: 23-080265-020
0 5 10 15
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 1
16 17 2
18 3
19 2
20 3
21 3
22 9
23 5
24 6
25 3
26 7
27 6
28 5
29 1
30 1
31 3
32 2
33 34
35 1
36 37 1
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 64 15 - 37 24 mph 28 mph 19 - 28 49 77% 9% / 6 15% / 9

SPEED PARAMETERS
#20 - Park Blvd Bet. Olive Ave & Page Mill Rd
City of Palo Alto
Eastbound Spot Speeds
14:15-15:40
9/21/2023
Project #: 23-080265-020
02468 1 0
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 1
16 17 2
18 3
19 1
20 1
21 2
22 2
23 5
24 6
25 4
26 5
27 3
28 5
29 2
30 3
31 1
32 2
33 2
34 35 1
36 37
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 51 15 - 35 25 mph 30 mph 21 - 30 37 73% 15% / 8 12% / 6

SPEED PARAMETERS
#20 - Park Blvd Bet. Olive Ave & Page Mill Rd
City of Palo Alto
Westbound Spot Speeds
14:15-15:40
9/21/2023
Project #: 23-080265-020
02468
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_020
NB SB EB WB Total
0 0 2,009 1,428 3,437

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 12 3 12:00 39 26 65 00:00 01:00 47 11
00:15 13 4 12:15 37 22 59 01:00 02:00 44 8
00:30 11 2 12:30 39 17 56 02:00 03:00 03 3
00:45 11 2 12:45 29 30 59 03:00 04:00 21 3
01:00 41 5 13:00 34 28 62 04:00 05:00 74 11
01:15 03 3 13:15 27 28 55 05:00 06:00 19 10 29
01:30 00 0 13:30 32 32 64 06:00 07:00 39 24 63
01:45 00 0 13:45 41 21 62 07:00 08:00 120 59 179
02:00 00 0 14:00 34 18 52 08:00 09:00 225 106 331
02:15 02 2 14:15 27 17 44 09:00 10:00 266 78 344
02:30 01 1 14:30 35 32 67 10:00 11:00 167 68 235
02:45 00 0 14:45 34 45 79 11:00 12:00 134 72 206
03:00 10 1 15:00 20 30 50 12:00 13:00 144 95 239
03:15 00 0 15:15 33 42 75 13:00 14:00 134 109 243
03:30 00 0 15:30 26 17 43 14:00 15:00 130 112 242
03:45 11 2 15:45 21 32 53 15:00 16:00 100 121 221
04:00 02 2 16:00 39 38 77 16:00 17:00 134 140 274
04:15 01 1 16:15 26 30 56 17:00 18:00 137 158 295
04:30 10 1 16:30 27 34 61 18:00 19:00 88 130 218
04:45 61 7 16:45 42 38 80 19:00 20:00 61 62 123
05:00 12 3 17:00 35 43 78 20:00 21:00 47 32 79
05:15 30 3 17:15 37 45 82 21:00 22:00 26 16 42
05:30 33 6 17:30 33 35 68 22:00 23:00 17 10 27
05:45 12 5 17 17:45 32 35 67 23:0 0 00:00 47 11
06:00 94 13 18:00 24 43 67
06:15 66 12 18:15 25 26 51 NB SB EB WB TOTA L
06:30 64 10 18:30 16 36 52 00:00 to 12:00
06:45 18 10 28 18:45 23 25 48 987 436 1423
07:00 23 15 38 19:00 13 27 40 8:45 8:00 8:45
07:15 32 8 40 19:15 16 12 28 267 106 351
07:30 21 18 39 19:30 11 13 24 0.902 0.946 0.924
07:45 44 18 62 19:45 21 10 31
08:00 50 28 78 20:00 10 11 21 12:00 to 00:00
08:15 61 26 87 20:15 11 6 17 1022 992 2014
08:30 53 26 79 20:30 14 8 22 16:45 16:45 16:45
08:45 61 26 87 20:45 12 7 19 147 161 308
09:00 71 24 95 21:00 11 6 17 0.875 0.894 0.939
09:15 61 19 80 21:15 33 6
09:30 74 15 89 21:30 94 13 07:00 to 09:00
09:45 60 20 80 21:45 33 6 345 165 510
10:00 46 19 65 22:00 35 8 8:00 8:00 8:00
10:15 35 17 52 22:15 70 7 225 106 331
10:30 44 16 60 22:30 41 5 0.922 0.946 0.951
10:45 42 16 58 22:45 34 7
11:00 29 16 45 23:00 31 4 16:00 to 18:00
11:15 29 18 47 23:15 01 1 271 298 569
11:30 36 21 57 23:30 13 4 16:45 16:45 16:45
11:45 40 17 57 23:45 02 2 147 161 308
TOTALS 0 0 987 436 1423 TOTALS 0 0 1022 992 2014 0.875 0.894 0.939 SPLIT % 0% 0% 69% 31% 41% SPLIT % 0% 0% 51% 49% 59%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#20 ‐ Park Blvd Bet. Olive Ave & Page Mill Rd
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #21
Street: Quarry Rd.

Limits: El Camino Real to Campus Dr.

Direction: EB/WB
Date /Location of Survey 10/5/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 164
85th Percentile (mph) 33
10 mph Pace 24-33
Percent in Pace 83%
Average Daily Traffic (ADT) 15,711
Length of Segment (mi.) 0.74
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 35
Accident Rate (Acc/MVM) 2.74
Statewide Average Accident Rate 1.10
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial and institutional (school, medical) land uses on both sides.

A divided 4-lane arterial. Raised median serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals at most intersections except at Stanford Medical Center driveway and at Campus Drive. Storage bays present at most intersections. Marked crosswalks present at all intersections. Midblock crosswalk present north of driveway to Stanford Medical Center. No on-street parking permitted on either side. No school zone present. Horizontal curves near Stanford Medical Center driveway and at intersection with Sweet Olive Wy. Driveway density moderate on western side and low on eastern side. §22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 33 --> 35 §22358.6(c) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded up from the 85th percentile speed: 35 --> 30
§22358.7 - Reduce the speed limit by an additional 5 mph as the portion of highway is located near facilities that generate high concentrations of pedestrians and bicyclists, including a university, concrete sidewalks, Class II bike lanes, and marked crosswalks:
30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 2
22 3
23 6
24 9
25 11
26 14
27 17
28 15
29 22
30 15
31 13
32 10
33 10
34 6
35 3
36 2
37 3
38 1
39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 164 19 - 39 29 mph 33 mph 24 - 33 136 83% 7% / 12 10% / 16

SPEED PARAMETERS
#21 - Quarry Rd Bet. Arboretum Rd & Vineyard Ln
City of Palo Alto
Northbound & Southbound Spot Speeds
12:00-13:00
10/5/2023
Project #: 23-080265-021
0 5 10 15 20 25
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 1
22 2
23 4
24 6
25 5
26 8
27 10
28 8
29 11
30 7
31 7
32 3
33 4
34 2
35 1
36 37
38 39
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 79 21 - 35 28 mph 31 mph 23 - 32 69 87% 3% / 3 9% / 7

SPEED PARAMETERS
#21 - Quarry Rd Bet. Arboretum Rd & Vineyard Ln
City of Palo Alto
Northbound Spot Speeds
12:00-13:00
10/5/2023
Project #: 23-080265-021
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 1
22 1
23 2
24 3
25 6
26 6
27 7
28 7
29 11
30 8
31 6
32 7
33 6
34 4
35 2
36 2
37 3
38 1
39 1
40 41
42 43
44 45
46 47
48 49
50 51
52 53
54 55
56 57
58 59
60 61
62 63
64 65
66 67
68 69
>=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 85 19 - 39 29 mph 34 mph 25 - 34 68 80% 9% / 8 11% / 9

SPEED PARAMETERS
#21 - Quarry Rd Bet. Arboretum Rd & Vineyard Ln
City of Palo Alto
Southbound Spot Speeds
12:00-13:00
10/5/2023
Project #: 23-080265-021
02468 1 0 1 2
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Wednesday City: Palo Alto
Date: 10/4/2023 Project #: CA23_080264_021
NB SB EB WB Total
8,366 7,345 0 0 15,711

TIME NB SB EB WB TOTAL TIME NB SB EB WB TOTAL NB SB EB WB TOTAL 00:00 22 9 31 12:0 0 157 113 270 00:0 0 01:00 81 37 118 00:15 20 10 30 12:15 145 132 277 01:0 0 02:00 53 24 77
00:30 24 12 36 12:3 0 115 129 244 02:0 0 03:00 42 16 58 00:45 15 6 21 12:45 104 118 222 03:0 0 04:00 43 45 88
01:00 14 6 20 13:0 0 113 141 254 04:0 0 05:00 50 124 174 01:15 18 6 24 13:15 129 100 229 05:0 0 06:00 103 294 397 01:30 14 9 23 13:3 0 131 125 256 06:0 0 07:00 244 636 880 01:45 73 10 13:45 134 115 249 07:0 0 08:00 567 498 1065 02:00 83 11 14:0 0 139 113 252 08:0 0 09:00 419 498 917 02:15 66 12 14:15 135 151 286 09:0 0 10:00 379 473 852
02:30 14 2 16 14:3 0 179 117 296 10:0 0 11:00 377 410 787 02:45 14 5 19 14:45 132 134 266 11:0 0 12:00 470 405 875 03:00 76 13 15:0 0 134 96 230 12:0 0 13:00 521 492 1013 03:15 78 15 15:15 152 107 259 13:0 0 14:00 507 481 988
03:30 22 11 33 15:3 0 193 105 298 14:0 0 15:00 585 515 1100 03:45 72 0 27 15:45 170 96 266 15:0 0 16:00 649 404 1053 04:00 61 4 20 16:0 0 132 94 226 16:0 0 17:00 607 389 996 04:15 10 20 30 16:15 159 113 272 17:0 0 18:00 628 340 968 04:30 16 35 51 16:3 0 160 98 258 18:0 0 19:00 553 450 1003 04:45 18 55 73 16:45 156 84 240 19:0 0 20:00 492 256 748 05:00 17 45 62 17:0 0 165 93 258 20:0 0 21:00 292 180 472 05:15 18 55 73 17:15 157 90 247 21:0 0 22:00 242 164 406 05:30 30 74 104 17:3 0 173 81 254 22:0 0 23:00 177 149 326 05:45 38 120 158 17:45 133 76 209 23:0 0 00:00 285 65 350 06:00 33 125 158 18:00 168 85 253
06:15 55 169 224 18:15 143 122 265 NB SB EB WB TOTAL
06:30 76 176 252 18:3 0 134 137 271 00:00 to 12:00
06:45 80 166 246 18:45 108 106 214 2828 3460 6288
07:00 69 106 175 19:0 0 120 76 196 7:30 6:00 7:15
07:15 89 150 239 19:15 105 61 166 623 636 1113
07:30 233 129 362 19:3 0 154 54 208 0.668 0.903 0.769
07:45 176 113 289 19:45 113 65 178
08:00 115 108 223 20:0 0 88 51 139 12:00 to 00:00
08:15 99 131 230 20:15 84 43 127 5538 3885 9423
08:30 93 133 226 20:3 0 68 43 111 15:30 12:15 14:00
08:45 112 126 238 20:45 52 43 95 654 520 1100
09:00 102 131 233 21:0 0 58 41 99 0.847 0.922 0.929
09:15 97 123 220 21:15 63 38 101
09:30 80 114 194 21:3 0 77 49 126 07:00 to 09:00
09:45 100 105 205 21:45 44 36 80 986 996 1982
10:00 92 107 199 22:0 0 53 38 91 7:30 7:15 7:15
10:15 112 91 203 22:15 32 29 61 623 500 1113
10:30 77 95 172 22:3 0 59 42 101 0.668 0.833 0.769
10:45 96 117 213 22:45 33 40 73
11:00 108 73 181 23:0 0 56 31 87 16:00 to 18:00
11:15 129 100 229 23:15 86 13 99 1235 729 1964
11:30 109 123 232 23:3 0 101 13 114 16:45 16:00 16:15
11:45 124 109 233 23:45 42 8 50 651 389 1028
TOTALS 2828 3460 0 0 6288 TOTALS 5538 3885 0 0 9423 0.941 0.861 0.945 SPLIT % 45% 55% 0% 0% 40% SPLIT % 59% 41% 0% 0% 60%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#21 ‐ Quarry Rd Bet. Arboretum Rd & Vineyard Ln
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

NB SB EB WB
Segment #22
Street: Middlefield Rd.

Limits: University Ave. to Northern City Limits
Direction: NB/SB
Date /Location of Survey 9/20/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 176
85th Percentile (mph) 32
10 mph Pace 25-34
Percent in Pace 89%
Average Daily Traffic (ADT) 14,376
Length of Segment (mi.) 0.38
Street Classification Residential Arterial
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 11
Accident Rate (Acc/MVM) 1.83
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Residential land uses on both sides.

An undivided 2-lane residential arterial. Two-way left-turn lane and double yellow line serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals at intersections with Lyfton Ave. and University Ave. Side street stop control at remaining intersections. Westbound left-turn storage bays along segment at most intersections. Marked crosswalks present at all intersections. No on-street parking permitted on either side. No school zone present. Horizontal curve at intersection with Palo Alto Ave. Broad vertical curves throughout segment. Segment slopes negatively easterly. Driveway density high on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 32 --> 30 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 1
22 3
23 4
24 5
25 10
26 15
27 19
28 27
29 26
30 19
31 18
32 10
33 6
34 6
35 3
36 1
37 1
38 1
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 176 19 - 38 29 mph 32 mph 25 - 34 156 89% 7% / 14 4% / 6

SPEED PARAMETERS
#22 - Middlefield Rd Bet. Hawthorne Ave & Everett Ave
City of Palo Alto
Eastbound & Westbound Spot Speeds
09:50-10:50
9/20/2023
Project #: 23-080265-022
0 5 10 15 20 25 30
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 21 1
22 2
23 3
24 3
25 6
26 10
27 11
28 15
29 13
30 9
31 9
32 4
33 1
34 3
35 1
36 37 1
38 1
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 94 19 - 38 28 mph 31 mph 23 - 32 83 88% 4% / 4 8% / 7

SPEED PARAMETERS
#22 - Middlefield Rd Bet. Hawthorne Ave & Everett Ave
City of Palo Alto
Eastbound Spot Speeds
09:50-10:50
9/20/2023
Project #: 23-080265-022
02468 1 0 1 2 1 4 1 6
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Eastbound & Westbound
DATE: Location:

TIME: Posted Speed: 25 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20
21 22 1
23 1
24 2
25 4
26 5
27 8
28 12
29 13
30 10
31 9
32 6
33 5
34 3
35 2
36 1
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 82 22 - 36 29 mph 32 mph 25 - 34 75 91% 4% / 4 4% / 3

SPEED PARAMETERS
#22 - Middlefield Rd Bet. Hawthorne Ave & Everett Ave
City of Palo Alto
Westbound Spot Speeds
09:50-10:50
9/20/2023
Project #: 23-080265-022
02468 1 0 1 2 1 4
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_022
NB SB EB WB Total
0 0 7,200 7,176 14,376

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 28 10 12:00 109 109 218 00:00 01:00 16 27 43
00:15 44 8 12:15 117 95 212 01:00 02:00 82 7 35
00:30 58 13 12:30 116 108 224 02:00 03:00 61 2 18
00:45 57 12 12:45 103 111 214 03:00 04:00 19 9 28
01:00 29 11 13:00 121 130 251 04:00 05:00 46 17 63
01:15 49 13 13:15 109 107 216 05:00 06:00 182 44 226
01:30 14 5 13:30 82 137 219 06:00 07:00 381 82 463
01:45 15 6 13:45 106 107 213 07:00 08:00 511 324 835
02:00 13 4 14:00 109 134 243 08:00 09:00 664 410 1074
02:15 21 3 14:15 102 138 240 09:00 10:00 638 310 948
02:30 26 8 14:30 97 147 244 10:00 11:00 525 340 865
02:45 12 3 14:45 108 152 260 11:00 12:00 499 380 879
03:00 42 6 15:00 92 141 233 12:00 13:00 445 423 868
03:15 62 8 15:15 97 167 264 13:00 14:00 418 481 899
03:30 52 7 15:30 104 156 260 14:00 15:00 416 571 987
03:45 43 7 15:45 114 132 246 15:00 16:00 407 596 1003
04:00 42 6 16:00 117 160 277 16:00 17:00 437 625 1062
04:15 84 12 16:15 110 147 257 17:00 18:00 530 688 1218
04:30 19 2 21 16:30 92 166 258 18:00 19:00 450 532 982
04:45 15 9 24 16:45 118 152 270 19:00 20:00 241 457 698 05:00 33 8 41 17:00 125 194 319 20:00 21:00 169 340 509 05:15 45 11 56 17:15 123 163 286 21:00 22:00 93 231 324 05:30 47 8 55 17:30 133 167 300 22:00 23:00 70 156 226
05:45 57 17 74 17:45 149 164 313 23:0 0 00:00 29 94 123 06:00 71 10 81 18:00 120 152 272
06:15 80 18 98 18:15 115 133 248 NB SB EB WB TOTA L
06:30 122 16 138 18:30 100 125 225 00:00 to 12:00
06:45 108 38 146 18:45 115 122 237 3495 1982 5477
07:00 124 38 162 19:00 74 125 199 8:30 7:45 7:45
07:15 100 54 154 19:15 74 122 196 685 457 1085
07:30 151 82 233 19:30 53 103 156 0.906 0.762 0.916
07:45 136 150 286 19:45 40 107 147
08:00 158 89 247 20:00 32 96 128 12:00 to 00:00
08:15 145 111 256 20:15 54 97 151 3705 5194 8899
08:30 189 107 296 20:30 40 87 127 17:00 17:00 17:00
08:45 172 103 275 20:45 43 60 103 530 688 1218
09:00 171 86 257 21:00 22 65 87 0.889 0.887 0.955
09:15 153 74 227 21:15 22 78 100
09:30 141 73 214 21:30 26 45 71 07:00 to 09:00
09:45 173 77 250 21:45 23 43 66 1175 734 1909
10:00 139 104 243 22:00 20 44 64 8:00 7:45 7:45
10:15 106 72 178 22:15 16 45 61 664 457 1085
10:30 111 81 192 22:30 21 37 58 0.878 0.762 0.916
10:45 169 83 252 22:45 13 30 43
11:00 135 83 218 23:00 12 29 41 16:00 to 18:00
11:15 116 79 195 23:15 92 8 37 967 1313 2280
11:30 117 103 220 23:30 32 5 28 17:00 17:00 17:00
11:45 131 115 246 23:45 51 2 17 530 688 1218
TOTALS 0 0 3495 1982 5477 TOTALS 0 0 3705 5194 8899 0.889 0.887 0.955 SPLIT % 0% 0% 64% 36% 38% SPLIT % 0% 0% 42% 58% 62%
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#22 ‐ Middlefield Rd Bet. Hawthorne Ave & Everett Ave
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
0 100
200
300
400
500
600
700
800
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB
Segment #23
Street: Porter Dr.

Limits: Page Mill Rd. to Hillview Ave.

Direction: NB/SB/EB/WB
Date /Location of Survey 9/28/2023
Posted Speed Limit (mph) 25
# Speed Data Collected 106
85th Percentile (mph) 31
10 mph Pace 20-29
Percent in Pace 76%
Average Daily Traffic (ADT) 2,009
Length of Segment (mi.) 0.41
Street Classification Local/Collector
Date Range Covered Jan 1, 2019 - Dec 31, 2021
Total Accidents 2
Accident Rate (Acc/MVM) 2.23
Statewide Average Accident Rate 1.18
Adjacent Land Use
Roadway Geometrics
Comments
Approved and Authorized for release by the City of Palo Alto:

Signed:

Date:

Title:Title: President, TJKM Transportation Consultants Signed: Nayan Amin, TE
Date:

C. Collision History
D. Roadway Conditions
Commercial (offices) and institutional (schools) land uses on both sides.

An undivided 2-lane local/collector. Two-way left-turn lane serves as median. Concrete sidewalks present on both sides. Class II bike lanes on both sides. Signals at intersections with Page Mill Rd. and Hillview Ave. Left-turn storage bays along segment at intersections with Page Mill Rd. and Hillview Ave. Marked crosswalks present at signalized intersections. Midblock crosswalk present near middle of segment. No on-street parking permitted on either side. No school zone present. Broad horizontal curve on eastern half of segment. Vertical curves present throughout segment. Segment slopes negatively easterly/northerly. Driveway density high on both sides.
§22358.6(a) - Round the speed limit to the nearest 5-mph increment from the 85th percentile speed: 31 --> 30 §22358.6(b) - Lower the speed limit an additional 5 mph from the rounded speed limit if the speed limit was initially rounded down from the 85th percentile speed: 30 --> 25
Speed Limit Change? No
Existing Speed Limit: 25 Recommended Speed Limit: 25
Factors
A. Prevailing Speed Data
B. Traffic Factors
This survey conforms to Section 627 and 40802 of the California Vehicle Code and Section 2B.13 of the California MUTCD and recommends a speed limit appropriate to facilitate the safe and orderly movement of traffic.

Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 5
21 7
22 6
23 7
24 12
25 7
26 11
27 10
28 9
29 7
30 5
31 4
32 3
33 3
34 1
35 2
36 2
37 38 1
39 40 2
41 42 1
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 106 19 - 42 26 mph 31 mph 20 - 29 81 76% 0% / 1 23% / 24

SPEED PARAMETERS
#23 - Porter Dr S/O Hillview Ave
City of Palo Alto
Northbound & Southbound Spot Speeds
13:30-14:50
9/28/2023
Project #: 23-080265-023
0 5 10 15
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 1
20 3
21 1
22 3
23 3
24 5
25 4
26 5
27 6
28 7
29 3
30 3
31 2
32 2
33 1
34 1
35 1
36 1
37 38 1
39 40 2
41 42 1
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 56 19 - 42 27 mph 32 mph 22 - 31 41 73% 8% / 5 18% / 10

SPEED PARAMETERS
#23 - Porter Dr S/O Hillview Ave
City of Palo Alto
Northbound Spot Speeds
13:30-14:50
9/28/2023
Project #: 23-080265-023
02468
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Spot Speed Study
Prepared by: National Data & Surveying Services
Northbound & Southbound
DATE: Location:

TIME: Posted Speed: 30 MPH Clear/Dry
Speed
mph ALL Vehicles
<=10
11 12
13 14
15 16
17 18
19 20 2
21 6
22 3
23 4
24 7
25 3
26 6
27 4
28 2
29 4
30 2
31 2
32 1
33 2
34 35 1
36 1
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 >=70
Class Count Range
50th
Percentile
85th
Percentile
10 MPH
Pace # in Pace
Percent in
Pace % / # Below Pace % / # Above Pace
ALL 50 20 - 36 25 mph 30 mph 20 - 29 41 82% 0% / 0 18% / 9

SPEED PARAMETERS
#23 - Porter Dr S/O Hillview Ave
City of Palo Alto
Southbound Spot Speeds
13:30-14:50
9/28/2023
Project #: 23-080265-023
02468
70 68
66 64
62 60
58 56
54 52
50 48
46 44
42 40
38 36
34 32
30 28
26 24
22 20
18 16
14 12
10 Speed - MPH
Number of Vehicles
Day: Tuesday City: Palo Alto
Date: 9/12/2023 Project #: CA23_080264_023
NB SB EB WB Total
991 1,018 0 0 2,009

TIME NB SB EB WB TOTA L TIME NB SB EB WB TOTA L NB SB EB WB TOTA L 00:00 10 1 12:00 14 12 26 00:00 01:00 14 5
00:15 00 0 12:15 14 11 25 01:00 02:00 44 8
00:30 02 2 12:30 14 9 23 02:00 03:00 02 2
00:45 02 2 12:45 13 12 25 03:00 04:00 50 5
01:00 11 2 13:00 11 17 28 04:00 05:00 41 5
01:15 22 4 13:15 13 10 23 05:00 06:00 23 1 24
01:30 01 1 13:30 12 15 27 06:00 07:00 45 12 57
01:45 10 1 13:45 31 1 14 07:00 08:00 102 28 130
02:00 00 0 14:00 13 23 36 08:00 09:00 148 65 213
02:15 01 1 14:15 11 22 33 09:00 10:00 125 63 188
02:30 00 0 14:30 73 0 37 10:00 11:00 121 46 167
02:45 01 1 14:45 92 0 29 11:00 12:00 80 57 137
03:00 00 0 15:00 20 16 36 12:00 13:00 55 44 99
03:15 00 0 15:15 71 7 24 13:00 14:00 39 53 92
03:30 10 1 15:30 11 19 30 14:00 15:00 40 95 135
03:45 40 4 15:45 11 25 36 15:00 16:00 49 77 126
04:00 00 0 16:00 94 0 49 16:00 17:00 45 120 165
04:15 00 0 16:15 11 20 31 17:00 18:00 45 137 182
04:30 01 1 16:30 14 30 44 18:00 19:00 30 112 142
04:45 40 4 16:45 11 30 41 19:00 20:00 13 55 68
05:00 20 2 17:00 12 37 49 20:00 21:00 42 1 25
05:15 41 5 17:15 14 29 43 21:00 22:00 91 2 21
05:30 40 4 17:30 13 49 62 22:00 23:00 31 4
05:45 13 0 13 17:45 62 2 28 23:0 0 00:00 18 9
06:00 10 3 13 18:00 62 9 35
06:15 73 10 18:15 92 9 38 NB SB EB WB TOTA L
06:30 13 5 18 18:30 11 28 39 00:00 to 12:00
06:45 15 1 16 18:45 42 6 30 658 283 941
07:00 26 6 32 19:00 51 8 23 8:00 8:45 8:15
07:15 25 5 30 19:15 49 13 148 77 218
07:30 23 4 27 19:30 31 6 19 0.841 0.837 0.826
07:45 28 13 41 19:45 11 2 13
08:00 34 15 49 20:00 14 5 12:00 to 00:00
08:15 33 14 47 20:15 25 7 333 735 1068
08:30 37 14 51 20:30 16 7 12:00 16:45 16:45
08:45 44 22 66 20:45 06 6 55 145 195
09:00 31 23 54 21:00 14 5 0.982 0.740 0.786
09:15 23 17 40 21:15 04 4
09:30 32 15 47 21:30 43 7 07:00 to 09:00
09:45 39 8 47 21:45 41 5 250 93 343
10:00 46 14 60 22:00 10 1 8:00 8:00 8:00
10:15 30 13 43 22:15 10 1 148 65 213
10:30 27 7 34 22:30 00 0 0.841 0.739 0.807
10:45 18 12 30 22:45 11 2
11:00 18 15 33 23:00 03 3 16:00 to 18:00
11:15 19 11 30 23:15 01 1 90 257 347
11:30 20 15 35 23:30 12 3 16:30 16:45 16:45
11:45 23 16 39 23:45 02 2 51 145 195
TOTALS 658 283 0 0 941 TOTALS 333 735 0 0 1068 0.911 0.740 0.786 SPLIT % 70% 30% 0% 0% 47% SPLIT % 31% 69% 0% 0% 53%
Peak Hour Factor
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Peak Hour Factor
Peak Period
Volume
Peak Hour
Peak Volume
Prepared by National Data & Surveying Services
VOLUME
#23 ‐ Porter Dr S/O Hillview Ave
DAILY TOTALS DAILY TOTALS
15‐Minutes Interval Hourly Intervals
TIME

STATISTICS
Peak Period
Volume
Peak Hour
0 20
40 60
80 100
120
140
160
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

NB SB EB WB

ENGINEERING AND TRAFFIC SURVEY | CITY OF PALO ALTO

Appendix B: Collision Data
ID Segment All
Collisions Head‐On Side
swipe
Rear‐
End
Broad
side
Hit
Object
Over
turned
Auto/
Ped
All
Other Fatal Injury:

Serious
Injury:

Other
Visible
Injury:

Complaint
of Pain
PDO Other
1 Alma St. from El Camino Real to
University Ave. 18 1 0 7 8 2 0 0 0 0 1 6 11 0 0
2 Charleston Rd. from Fabian Way to
Southern City Limits 6 1 0230 0 0 0 0 0 2 4 0 0
3 Embarcadero Rd. from El Camino Real
to Alma St. Overcrossing 16 2 1 7 4 0 0 0 2 0 0 7 9 0 0 4 Fabian Way from Charleston Rd. to W.

Bayshore Rd. 10 0 0 3 6 1 0 0 0 0 0 6 4 0 0
5 Hanover St. from Page Mill Rd. to
Hillview Ave. 6 1 0210 0 0 2 0 0 3 3 0 0
6 Hillview Ave. from Hanover St. to
Foothill Exp. 8 1 1240 0 0 0 0 1 4 3 0 0
7 Middlefield Rd. from University Ave.
to Embarcadero Rd. 80 6 1 12 55 0 0 4 2 0 0 31 49 0 0
8 San Antonio Rd. from Alma St. to
Middlefield Rd. 12 0 0 3 4 2 1 1 1 0 0 6 6 0 0
9 San Antonio Rd. from Middlefield Rd.
to Charleston Rd. 36 1 4 10 13 3 1 1 3 0 0 16 20 0 0
10 W. Bayshore Rd. from Loma Verde
Ave. to Fabian Way 1 0 0010 0 0 0 0 0 1 0 0 0
11 Charleston Rd. from El Camino Real to
Alma St. 5 0 0301 0 0 1 0 0 2 3 0 0
12 Charleston Rd. from Alma St. to
Middlefield Rd. 7 1 1301 0 1 0 0 0 3 4 0 0
13 Charleston Rd. from Middlefield Rd. to
Fabian Way 9 1 1230 0 2 0 0 0 3 6 0 0
14 Deer Creek Rd. from Page Mill Rd. to
Arastradero Rd. 8 0 0421 0 1 0 0 1 3 4 0 0
15 El Camino Way from Los Robles Ave.
to Maybell Ave. 0 0 0000 0 0 0 0 0 0 0 0 0
16 Hansen Way from El Camino Real to
Page Mill Exp. 15 0 1 11 3 0 0 0 0 1 0 4 10 0 0
17 Louis Rd. from Oregon Exp. to Loma
Verde Rd. 17 2 3 6 4 0 0 1 1 0 1 9 7 0 0
18 Louis Rd. from Loma Verde Ave. to
Charleston Rd. 11 0 1 7 1 0 0 1 1 0 0 4 7 0 0
19 N. California Ave. from Embarcadero
Rd. to Middlefield Rd. 8 2 2211 0 0 0 0 1 3 4 0 0
20 Park Blvd. from California Ave. to
Lambert Ave. 3 0 0010 0 1 1 0 0 3 0 0 0
21 Quarry Rd. from El Camino Real to
Campus Dr. 35 0 1 13 10 2 1 8 0 0 3 11 21 0 0
Type SeverityDescription
Collision Data (Jan 1, 2019 ‐ Dec 31, 2021)
ID Segment All
Collisions Head‐On Side
swipe
Rear‐
End
Broad
side
Hit
Object
Over
turned
Auto/
Ped
All
Other Fatal Injury:

Serious
Injury:

Other
Visible
Injury:

Complaint
of Pain
PDO Other
Type SeverityDescription
22 Middlefield Rd. from University Ave.
to Northern City Limits 11 1 0 7 3 0 0 0 0 0 0 4 7 0 0
23 Porter Dr. from Page Mill Rd. to
Hillview Ave. 2 0 1010 0 0 0 0 0 1 1 0 0

Palo Alto City CouncilSeptember 8, 2025

Palo Alto City Council
September 8, 2025