TC - Item 3A - Traffic Calming Measures for Location 5: Strathmore Avenue between Garvey Avenue and Graves AvenueROSEMEAD TRAFFIC COMMISSION
TO: TRAFFIC COMMISSION
FROM: DIRECTOR OF PUBLIC WORKS
DATE: SEPTEMBER 5, 2024
STAFF REPORT
SUBJECT: TRAFFIC CALMING REVIEW ALONG STRATHMORE AVENUE BETWEEN
GARVEY AVENUE AND GRAVES AVENUE
SUMMARY
On behalf of the City of Rosemead, engineering staff has completed a review of the road segment
along Strathmore Avenue, as well as recommended appropriate improvements at the location of
Strathmore Avenue between Garvey Avenue and Graves Avenue.
The City of Rosemead has received a request to review the segment of Strathmore Avenue,
between Garvey Avenue and Graves Avenue. The city is requesting to evaluate this segment for
the installation of traffic calming measures. In response to this request and on behalf of the City,
engineering staff has completed a traffic review of this segment of Strathmore Avenue to determine
if the street segment qualifies for the installation of traffic calming measures.
ANALYSIS
The traffic review included an analysis of the existing roadway conditions, a field review, and a
review of approximately 3 -years of available collision data.
Existing Conditions:
Strathmore Avenue is a north/south street, considered a local road per the California Road System
Funtional Classification by Caltrans. Strathmore Avenue has a prima facie speed limit of 25 MPH.
The roadway is approximately 3 5 -feet wide with one lane of travel in each direction and no marked
centerline. Parking is allowed on both sides of the street except during street sweeping hours,
parking restricted areas and areas marked with red curb. Land use along this segment of Strathmore
Avenue consist of single family residential housing. This segment has sidewalks on both sides of
the street.
City Traffic Commission Meeting
September 5, 2024
Page 2 of 2
STAFF RECOMMENDATION
After a thorough review of existing field and traffic conditions and per the guidelines in the
California Manual on Uniform Traffic Control Devices (CAMUTCD), California Vehicle Code
(CVC), and based on engineering judgement, it was determined that the segment along Strathmore
Avenue between Garvey Avenue and Graves Avenue meets the requirements for the installation
of traffic calming devices along the street.
Please refer to the Installation Exhibit in Attachment A for a conceptual exhibit representation
of the proposed recommendations.
These improvements include:
1. INSTALL 25 MPH SPEED LIMIT SIGNAGE (R2-1) AND "25" PAVEMENT
LEGEND: Install 25 MPH Speed Limit signs (R2 — 1) for both directions of travel along
Strathmore Avenue, between Garvey Avenue and Graves Avenue:
a. For the northbound direction, install new 25 MPH speed limit sign along the east side of
Strathmore Avenue, aproximatelly 180 -ft north of the intersection at Graves Avenue. Install
"25" Pavement Legend adjacent to the new speed limit signage.
b. For southbound direction, install new 25 MPH speed limit sign along the west side of
Strathmore Avenue, approximatelly 200 -ft south of the intersection with Garvey Avenue.
Install "25" Pavement Legend adjacent to the new speed limit signage.
2. INSTALL DOUBLE YELLOW CENTERLINE: Install double yellow centerline along
Strathmore Avenue between Garvey Avenue and Graves Avenue, along the entire street
segment.
Prepared by:
Allison Richter, Contract Traffic Engineering Division
Attachments:
A. Attachment A — Technical Traffic Engineering Report
ea
TRANSTEch
TO: City of Rosemead, Department of Public Works
FROM: Transtech Engineers, Inc.
DATE: September 5, 2024
SUBJECT: TRAFFIC CALMING ON STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES
AVENUE
INTRODUCTION
The City of Rosemead has received a request to review the segment of Strathmore Avenue between
Garvey Avenue and Graves Avenue. The request is to implement traffic calming measures such as speed
humps along the segment of Strathmore Avenue due to speeding vehicles. In response to this request and
on behalf of the City, engineering staff has completed a traffic review at the subject segment. The traffic
review included a review of existing conditions of the segment, 3 -years of available collision data, Average
Daily Traffic (ADT) counts and 24-hour speed survey counts.
Figure 1: Vicinity Map
ME
1
E
LEGEND
0 -------0 Segment: Strathmore Avenue between Garvey Avenue and Graves Avenue (2,720 Feet)
Cos -lt�
e.
Prepared By: Transtech Engineers, Inc. I Page 1 of 14
TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
EXISTING CONDITIONS
Figure 1: Existing Conditions Diagram — Strathmore Avenue betweeen Garvey Avenue and Graves
Avenue
5
1 t — yam;
nl� b p MEM= + 35'
14,
i � t
af
LEGEND AARKING No Parking Due to Street
P
Stop Sign (R1-1) 0londay Sweeping Signage and No
6a-10Au Parking Anytime (R26 Variation)
Existing red curb
Strathmore Avenue: Within the City of Rosemead, Strathmore Avenue is a north/south street, considered
a local road per the California Road System Funtional Classification by Caltrans. Strathmore Avenue has a
prima facie speed limit of 25 MPH. The roadway is approximately 35 -feet wide with one lane of travel in
each direction and no marked centerline. Parking is allowed on both sides of the street except during
street sweeping hours, parking restricted areas and areas marked with red curb. Land use along this
segment of Strathmore Avenue consist of single family residential housing. This segment has sidewalks on
both sides of the street.
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
COLLISION DATA
Collision data was obtained from the computerized collision records system maintained by the State of
California Statewide Integrated Traffic Records System (SWITRS). A review of collision history within the
segment of Strathmore Avenue between Garvey Avenue and Graves Avenue was conducted over a 3 year
period between January 2021 to the most recent available data, December 2023.
Intersection Collision Breakdown
Veh vs.
Veh
Veh vs.
Ped
Veh vs.
Obj
1
0
1
Collision Breakdown - Year
2023
2022
2021
1
0
1
Table 1: Collision Table: Strathmore Avenue between Garvey Avenue and Graves Avenue
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Prepared By: Transtech Engineers, Inc. I Page 3 of 14
Severity
1- Fatal
2 - Severe Injury
Motor
Day of
Lighting
3 - Other Visible
Vehicle,
Collison
Primary
Primary
Secondary
Factor and
Collision
p
Date
Dist.
Time
the
(Day, Night,
ollision TypeInjury
Pedestrian,
Road
Road
Week
Etc.)
4 -Complaint of
Bicycle
Detail
Factor
Descriptions
Pain
Involved
5 - Prop Dam
Only (PDO)
SB PROC ST
STRATH
1
6/27/2023
MORE
GRAVES
356'N
18;30
TUE
DAYLIGHT
SIDESWIPE
5
OTHER MV
MV HITS SB
IMPROP
AVE
PROC ST MV
TURN
AVE
AND PKD MV
STRATH
SB LFT TURN
2
8/19/2021
MORE
GARVEY
18'S
20:55
THU
DARK -ST
HIT OBJECT
5
FIXED OBJ
MV HITS
IMPROP
AVE
TURN
AVE
FIXED OBJ
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
AVERAGE DAILY TRAFFIC (ADT)
Average Daily Traffic (ADT) data was obtained from counts taken on Thursday, March 21,2024, Friday,
March 22, 2024, and Saturday, April 20, 2024, for Strathmore Avenue between Garvey Avenue and Graves
Avenue. A summary of ADT data is shown in Table 2, 3 and 4: Average Daily Traffic (ADT). The ADT is
attached (Attachment 1, 3, & 5) at the end of the report.
Table 2: Average Daily Traffic (ADT)
Location Vehicles per Day (vpd)
3/21/2024
Vehicles per Day (vpd) Vehicles per Day (vpd)
3/21/2024 1 3/21/2024
Strathmore Avenue
NB SB TOTAL
between Garvey Avenue
450 535 985
and Graves Avenue
Table 3: Average Daily Traffic (ADT)
Location Vehicles per Day (vpd)
3/22/2024
Vehicles per Day (vpd) Vehicles per Day (vpd)
3/22/2024 3/22/2024
Strathmore Avenue
NB SB TOTAL
between Garvey Avenue 472 521 993
and Graves Avenue
Table 4: Average Daily Traffic (ADT)
Vehicles per Day (vpd) Vehicles per Day (vpd) Vehicles per Day (vpd)
Location 4/20/2024 4/20/2024 4/20/2024
Strathmore Avenue
between Garvey Avenue NB
and Graves Avenue 566
SPEED SURVEY
SB TOTAL
629 1 1195
To assess the speed at which vehicles are traveling along Strathmore Avenue, a 24-hour speed survey was
taken. A 24-hour speed survey was taken on Thursday, March 21,2024, Friday, March 22, 2024, and
Saturday, April 20, 2024, for Strathmore Avenue between Garvey Avenue and Graves Avenue. The average
85th percentile speed of vehicles along Strathmore Avenue among the 3 days observed is at 32 MPH. This
means that 85 percent of the vehicles sampled are traveling at 32 MPH or below, which is slightly above
the prima facie speed limit of 25 MPH. Table 5 below shows the Thursday, March 21,2024, Friday, March
22, 2024, and Saturday, April 20, 2024, speed survey results. The speed summary is attached (Attachment
2, 4, & 6) at the end of the report.
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
ble 5: Speed Survey along Strathmore Avenue between Garvey Avenue and Graves Avenue (3/21/24,
Dir. of Date/Time of
Location 85%ile Speed Prima Facie Limit
Travel Survey
Strathmore Avenue between
Garvey Avenue and Graves
Avenue
NB/SB
3/21/2024
24-hour
33 MPH
25 MPH
Strathmore Avenue between
Garvey Avenue and Graves
NB/SB
3/22/2024
32 MPH
25 MPH
24-hour
Avenue
Strathmore Avenue between
Garvey Avenue and Graves
NB/SB
4/20/2024
32 MPH
25 MPH
24-hour
Ovani is
PROPOSED SPEED HUMP CRITERIA
The City is in the process of developing a Traffic Calming Policy that would include criteria for the
installation of speed humps. The policy would need to be considered and approved by City Council prior
to the recommendation and installation of a speed hump. Within the proposed traffic calming policy
that is currently being developed, a street must meet the following criteria to be considered for a speed
hump, including:
Items that are typically required for the installation of speed humps includes:
• Residential Street, or a Local Road
• Posted Speed Limit of 30 MPH or below
• ADT (Average Daily Traffic) of 500 to 2500 vehicles
• One lane each direction, with a roadway width of 40 -feet or less
• Resident Petition
Although the residents asked for speed hump installation at this location, speed humps cannot be
considered at this time without official review and approval by City Council.
RECOMMENDATIONS
After a review of existing traffic conditions and following the proposed speed hump criteria, the California
Manual on Uniform Traffic Control Devices (CAMUTCD), California Vehicle Code (CVC), based on the traffic
review and engineering judgement, the segment of Strathmore Avenue between Garvey Avenue and
Graves Avenue was found to qualify for the installation of traffic calming measures. The following
measures are recommended and shown in the Recommendation Exhibit below:
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
RECOMMENDATIONS
1. INSTALL 25 MPH SPEED LIMIT SIGNAGE (112-1) AND "25" PAVEMENT LEGEND: Install 25 MPH Speed
Limit signs (R2 — 1) for both directions of travel along Strathmore Avenue, between Garvey Avenue
and Graves Avenue:
a. For the northbound direction, install new 25 MPH speed limit sign along the east side of Strathmore
Avenue, aproximatelly 180 -ft north of the intersection at Graves Avenue. Install "25" Pavement
Legend adjacent to the new speed limit signage.
b. For southbound direction, install new 25 MPH speed limit sign along the west side of Strathmore
Avenue, approximatelly 200 -ft south of the intersection with Garvey Avenue. Install "25" Pavement
Legend adjacent to the new speed limit signage.
2. INSTALL DOUBLE YELLOW CENTERLINE: Install double yellow centerline along Strathmore Avenue
between Garvey Avenue and Graves Avenue, along the entire street segment.
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RECOMMENDATION EXHIBIT: ROSEMEAD CA—SEGMENT OF STRATHMORE AVENUE BETWEEN GARVEY AVENUE AND GRAVES AVENUE
Date Prepared. 9-5-24
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OINSTALL 25 MPH SPEED LIMIT SIGNAGE (112-1) AND "25" PAVEMENT LEGEND: Install 25 MPH Speed Limit signs (132 — 1)
for both directions of travel along Strathmore Avenue, between Garvey Avenue and Graves Avenue:
a. For the northbound direction, install new 25 MPH speed limit sign along the east side of Strathmore Avenue,
aproximatelly 180 -ft north of the intersection at Graves Avenue. Install "25" Pavement Legend adjacent to the new
speed limit signage.
b. For southbound direction, install new 25 MPH speed limit sign along the west side of Strathmore Avenue,
approximatelly 200 -ft south of the intersection with Garvey Avenue. Install "25" Pavement Legend adjacent to the
new speed limit signage.
OINSTALL DOUBLE YELLOW CENTERLINE: Install double yellow centerline along Strathmore Avenue between Garvey
Avenue and Graves Avenue, along the entire street segment.
SPEED
LIMIT
25
TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachments:
1. ADT(Thursday, March 21,2024): Strathmore Avenue between Garvey Avenue and Graves
Avenue
2. Speed Survey (Thursday, March 21,2024): Strathmore Avenue between Garvey Avenue and
Graves Avenue
3. ADT (Friday, March 22,2024): Strathmore Avenue between Garvey Avenue and Graves Avenue
4. Speed Survey (Friday, March 22, 2024): Strathmore Avenue between Garvey Avenue and
Graves Avenue
5. ADT (Saturday, April 20,2024): Strathmore Avenue between Garvey Avenue and Graves Avenue
6. Speed Survey (Saturday, April 20,2024): Strathmore Avenue between Garvey Avenue and
Graves Avenue
Prepared By Transtech Engineers, Inc. I Page Sof 14
TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 1:
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Dar: mead,s
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Prepared By Transtech Engineers, Inc. I Page 9 o 14
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 2:
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 3:
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Prepared By Transtech Engineers, Inc. I Page 11 of 14
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Total
DA I LY TOTALS
k
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71
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Prepared By Transtech Engineers, Inc. I Page 11 of 14
TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 4:
SPEED
Strathmore Ave Bet Garvey Ave & Graves Ave
Dq mny
ar/
City. Xu.eine atl
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 5:
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Dry: Saturday
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Total
DA
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TWALS
213
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TOTAUS
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SPW%
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am
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TRAFFIC REVIEW OF THE SEGMENT STRATHMORE AVENUE BETWEEN GARVEV AVENUE AND GRAVES AVENUE
Attachment 6:
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