TC - Item 3C - Traffic Review at the Intersection Olney Street and Vane AvenueROSEMEAD TRAFFIC COMMISSION
STAFF REPORT
TO: TRAFFIC COMMISSION
FROM: GLORIA MOLLEDA, CITY MANAGER
DATE: OCTOBER 7, 2021
SUBJECT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND
VANE AVENUE
SUMMARY
On behalf of the City of Rosemead, engineering staff completed a traffic review and recommended
appropriate traffic improvements at the intersection of Olney Street and Vane Avenue.
The City of Rosemead received a resident request to review the existing traffic conditions at the
intersection of Olney Street and Vane Avenue. The resident reported that vehicles do not come to
a complete stop at the intersection.
ANALYSIS
As part of this traffic review an investigation of the intersection's collision history over a 5.5 -year
period, a peak hour intersection turning movement count, field observations of the stop as well as
an examination of the existing roadway conditions were evaluated. The placement of all traffic
control devices is dictated by engineering judgment and based on guidelines found in the
CAMUTCD (California Manual on Uniform Traffic Control Devices) and the CVC (California
Vehicle Code).
Olney Street: Within the City of Rosemead, Olney Street runs east -west and is considered a major
collector road with a posted speed limit of 25 mph. Olney Street is approximately 30 feet wide
with one lane in each direction. Parking is available on the north and south side of Olney Street
except for Wednesdays from 8:00 AM to 12:00 Noon, due to street sweeping. This segment of
Olney Street travels through single family residential zoning, per the Rosemead General Plan. See
Figure 2 for an existing conditions diagram.
Vane Avenue: Within the City of Rosemead, Vane Avenue runs north -south and is considered a
local road with a prima facie speed limit of 25 mph. Vane Avenue is approximately 25 feet wide
with one lane in each direction. Parking is allowed on both the east and west side of Vane Avenue,
except for Wednesdays from 8:00 AM to 12:00 Noon, due to street sweeping. This segment of
Vane Avenue runs through single family residential zoning, per the Rosemead General Plan.
City Traffic Commission Meeting
October 7, 2021
Page 2 of 3
Collision data was obtained from the computerized collision records system maintained by the
State of California called the Statewide Integrated Traffic Records Systems (SWITRS). A review
of all collisions that occurred at the intersection of Olney Street and Vane Avenue was conducted
over a 5.5 -year period between January 2016 through May 2021. According to the review of the
collision history, there was a total of 1 collision at the intersection of Olney Street and Vane
Avenue within the 5.5 -year period. The collision was reported as a rear end collision caused by an
improper turn.
To determine what type of turning movements are encountered at intersection of Olney Street and
Vane Avenue during the typical heaviest peak hours, traffic counts were taken at this intersection
during the hours of 7-9am and 4-6pm on September 2nd, 2021. Counts were taken when school is
back in session with in-person classes.
During the collection of the Peak Hour counts, it was observed that some vehicles were running
through or performing a "California Stop" at the existing All -Way Stop located at the intersection
of Olney Street and Vane Avenue. This indicates a need to make the signs more visible to motorist.
A field investigation was conducted which included site observations and a count of all pedestrian
who cross each individual leg of the intersection of Olney Street and Vane Avenue. The counts
were conducted on September 2nd, 2021 during the hours of 7:00am to 9:00am, and 4:00pm to
6:00pm. Detailed pedestrian counts can be found at the end of this document in the Attachments.
STAFF RECOMMENDATION
After a thorough review of existing field and traffic conditions and per the California Manual on
Uniform Traffic Control Devices (CAMUTCD), California Vehicle Code (CVC), based on the
traffic review and engineering judgement, it was determined that traffic improvements would
benefit the intersection of Olney Street and Vane Avenue to encourage drivers to come to a
complete stop at the existing three way stop intersection.
A detailed traffic report and proposed figure diagram is attached as Attachment A to this staff
report, please refer to the proposed diagram (Figure 6) in the attachment.
Below is a detailed list of the recommendations, these improvements are also shown on Figure 6
of Attachment A:
1. Install new larger STOP Signs (3606) along with an All Way (RI -3P) plaque mounted
under each STOP Sign at the Intersection of Vane Avenue and Olney Street as shown.
• Larger STOP Signs: Larger 36"x36" STOP signs will increase the driver's awareness
of the intersection. The visibility of intersections and ability of approaching drivers to
perceive them can be enhanced by installing larger signs at intersections. This should
follow the guidelines per CAMUTCD Table 211.1.
City Traffic Commission Meeting
October 7, 2021
Page 3 of 3
• All Way (Rl-3P) Plaque: An All Way plaque will increase the driver's awareness that
all directions of travel are required to stop at the intersection. (RI -3P) 18"x6".
2. Install red retroreflective strips on all the STOP posts, per CAMUTCD Section 2B.10,
paragraph 6.
• Retroretlective strips are strips installed on posts that match the background of the
sign which aids to enhance the visibility of the STOP Signs and is beneficial when
additional attention needs to be drawn to a stop sign especially during nighttime
conditions.
3. Refresh STOP legend and bar at STOP locations (high visibility paint) at the intersection
of Vane Avenue at Olney Street.
• STOP Pavement Legend and bar: a STOP pavement legend and bar provides further
awareness for driver's that they are approaching an intersection that requires a vehicle
to make a complete Stop.
4. Repaint the yellow painted crosswalk (high visibility paint) ladder stripe for the west leg
at the intersection of Vane Avenue at Olney Street.
Add red curb between crosswalk Striping and driveway to the west on the south side of
Olney Street. Vehicles parked in this area will block the view of a pedestrian waiting on
the curb to cross. Per CVC no cars should park or block a crosswalk. CVC:21970
Prepared by:
Jana Robbins, Contract Traffic Engineering Division
Attachments:
A. Attachment A - Technical Engineering Report
�i
TRANSTECFI
TO: City of Rosemead, Department of Public Works
FROM: Traffic Engineering, Transtech Engineers, Inc.
DATE: September 29, 2021
SUBJECT: Traffic Review at the Intersection Olney Street and Vane Avenue
INTRODUCTION/BACKGROUND
On behalf of the City of Rosemead, engineering staff completed a traffic review and
recommended appropriate traffic improvements at the intersection of Olney Street and Vane
Avenue. The City of Rosemead received a resident request to review the existing traffic conditions at
the intersection of Olney Street and Vane Avenue. The resident reported that vehicles do not come
to a complete stop at the intersection. As a potential solution, the resident requested flashing stop
signs at the Olney Street and Vane Avenue intersection. As part of this traffic review an investigation
of the intersection's collision history over a 5.5 -year period, a peak hour intersection turning
movement count, field observations of the stop as well as an examination of the existing roadway
conditions were evaluated. The placement of all traffic control devices is dictated by engineering
judgment and based on guidelines found in the CAMUTCD (California Manual on Uniform Traffic
Control Devices) and the CVC (California Vehicle Code).
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 1 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
Olney Street: Within the City of Rosemead, Olney Street runs east -west and is considered a major
collector road with a posted speed limit of 25 mph. Olney Street is approximately 30 feet wide with one
lane in each direction. Parking is available on the north and south side of Olney Street except for
Wednesdays from 8:00 AM to 12:00 Noon, due to street sweeping. This segment of Olney Street travels
through single family residential zoning, per the Rosemead General Plan. See Figure 2 for an existing
conditions diagram.
Vane Avenue: Within the City of Rosemead, Vane Avenue runs north -south and is considered a local road
with a prima facie speed limit of 25 mph. Vane Avenue is approximately 25 feet wide with one lane in
each direction. Parking is allowed on both the east and west side of Vane Avenue, except for Wednesdays
from 8:00 AM to 12:00 Noon, due to street sweeping. This segment of Vane Avenue runs through single
family residential zoning, per the Rosemead General Plan.
Figure 2: Existing Conditions
LEGEND
®
Stop (R1-1) Sign
R30A (CA) No Parking
....DG
DAESDA
with specified time
Bu-17uo
SPEED
LIMIT
25
Speed Limit (R2-1) Sign
''�^'' Z.\ School Crosswalk Warning
IBJ W1-7 Double Arrow Sign (SW24-1 (CA)) Sign
sceoDL
Yellow Standard Striped Crosswalk
ffq Object Makee K-1(CA)Type 2 JW at Olney Street and Vane Ave
<;>Stop Ahead (W3-1) Warning
Sign
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 2 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
PICTURES OF EXISTING CONDITIONS
Olney Street looking east towards Vane
O
west on Olney Street
IOlney Street looking west towards intersection
at Vane Avenue
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 3 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
COLLISION INVESTIGATION
Collision data was obtained from the computerized collision records system maintained by the State of
California called the Statewide Integrated Traffic Records Systems (SWITRS). A review of all collisions that
occurred at the intersection of Olney Street and Vane Avenue was conducted over a 5.5 -year period
between January 2016 through May 2021. Based on the information provided, a summary breakdown of
the number of collisions within the studied segment are shown below, in Table 1.
2021— 0 collisions
2018 — 0 collisions
2020 — 0 collisions
2017 — 0 collisions
2019 — 1 collision
2016 —0 collisions
Table 1: Olney Street Collision History
According to the review of the collision history, there was a total of 1 collision at the intersection of Olney
Street and Vane Avenue within the 5.5 -year period. The collision was reported as a rear end collision
caused by an improper turn. See Figure 3 for a visual representation of the collisions at the intersection
of Olney Street and Vane Avenue during the selected period.
Figure 3: Collision Diagram for Olney Street
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 4 of 13
..w
1-hdl
]-$erere ln�ury
Ad.a VeM1kb�
Da,a
+, semnaa.vI
t
WeeRna
KM1ling
LeYaImTYR
3-fNalaira INury
Pedeaalan�Rlaytla
Conlon Radar and
"nam'CaMan
tlIN
Poativ Koatl
•-Cum N"a
Inwlnd
Oae�l DeaarlpdMna
Epy
Dda
gPrv1 Dem Onty
IPDDI
1
W</]D]]
OINEV Si
VPHEAV
YJN
DARK -9
REAR END
5
OTHER MV
ER THEN VEN n1 Eg
IMPROP TURN
D
According to the review of the collision history, there was a total of 1 collision at the intersection of Olney
Street and Vane Avenue within the 5.5 -year period. The collision was reported as a rear end collision
caused by an improper turn. See Figure 3 for a visual representation of the collisions at the intersection
of Olney Street and Vane Avenue during the selected period.
Figure 3: Collision Diagram for Olney Street
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 4 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
PEAK HOUR TURNING MOVEMENT COUNT
To determine what type of turning movements are encountered at intersection of Olney Street and Vane
Avenue during the typical heaviest peak hours, traffic counts were taken at this intersection during the
hours of 7-9am and 4-6pm on September 2nd, 2021. Counts were taken when school is back in session
with in-person classes. Figures 4 and 5 depict the highest 1 -hour period during each peak hour.
Figure 4 below exhibits the peak hour volumes for the AM Peak hour of 7:30-8:30 am at the intersection
of Olney Street and Vane Avenue.
Olney Street and Vane Avenue
N Highest 1 Hour in AM PEAK
(7:30-8:30am)
'm
3
1 E 63
6
41 IN
Figure 4: AM Peak Hour Count 7:30-8:30am
Figure 5 below exhibits the highest one hour during the PM Peak which is from 4:45-5:45 pm at the
intersection of Olney Street and Vane Avenue
Olney Street and Vane Avenue
N Highest 1 Hour in PM PEAK
(4:45-5:45pm)
N N
Q 4
I "Ilk F 99
9 '
52
Figure 5: PM Peak Hour Count 4:45-5:45pm
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 5 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
FIELD OBSERVANCE OF VEHICLES AT STOP SIGN
During the collection of the Peak Hour counts, it was observed that some vehicles were running through
or performing a "California Stop" at the existing All -Way Stop located at the intersection of Olney Street
and Vane Avenue. This indicates a need to make the signs more visible to motorist.
PEDESTRIAN COUNT
A field investigation was conducted which included site observations and a count of all pedestrian who
cross each individual leg of the intersection of Olney Street and Vane Avenue. The counts were conducted
on September 2nd, 2021 during the hours of 7:00am to 9:00am, and 4:00pm to 6:00pm. Detailed
pedestrian counts can be found at the end of this document in the Attachments. Table 2 shows the
number of pedestrians crossing the studied area hourly. Only the west leg has a marked crosswalk.
Table 2 Hourly Pedestrian Count
North Leg
East Leg
West Leg
7am-8am
2
8am-9am
3
1
4pm-Spm
3
1
Spm-6pm
3
1
Total Pedestrians
11
1
2
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 6 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
RECOMMENDATIONS
After a thorough review of existing field and traffic conditions and pert he California Manual on Uniform
Traffic Control Devices (CAMUTCD), California Vehicle Code (CVC), based on the traffic review and
engineering judgement, it was determined that traffic improvements would benefit the intersection of
Olney Street and Vane Avenue to encourage drivers to come to a complete stop at the existing three way
stop intersection. The following measures will increase driver awareness of the intersection and stop.
The improvements are listed below and shown on Figure 6:
1. Install new larger STOP Signs (3606) along with an All Way (R1 -3P) plaque mounted under each
STOP Sign at the Intersection of Vane Avenue and Olney Street as shown.
• Larger STOP Signs: Larger 36"06" STOP signs will increase the driver's awareness of the
intersection. The visibility of intersections and ability of approaching drivers to perceive them
can be enhanced by installing larger signs at intersections. This should follow the guidelines
per CAMUTCD Table 2B.1.
• All Way (R1 -3P) Plaque: An All Way plaque will increase the driver's awareness that all
directions of travel are required to stop at the intersection. (R1 -3P) 181Ix6".
2. Install red retroreflective strips on all the STOP posts, per CAMUTCD Section 2B.10, paragraph 6.
• Retroreflective strips are strips installed on posts that match the background of the sign
which aids to enhance the visibility of the STOP Signs and is beneficial when additional
attention needs to be drawn to a stop sign especially during nighttime conditions.
3. Refresh STOP legend and bar at STOP locations (high visibility paint) at the intersection of Vane
Avenue at Olney Street.
• STOP Pavement Legend and bar: a STOP pavement legend and bar provides further
awareness for driver's that they are approaching an intersection that requires a vehicle to
make a complete Stop.
4. Repaint the yellow painted crosswalk (high visibility paint) ladder stripe for the west leg at the
intersection of Vane Avenue at Olney Street.
S. Add red curb between crosswalk Striping and driveway to the west on the south side of Olney
Street. Vehicles parked in this area will block the view of a pedestrian waiting on the curb to cross.
Per CVC no cars should park or block a crosswalk. CVC:21970
CVC:21970
(o) No person may stop o vehicle unnecessarily in o manner that causes the vehicle to block o
marked or unmarked crosswalk or sidewalk.
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 7 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
(b) Subdivision (a) does not preclude the driver of a vehicle facing a steady circular red light from turning right or turning
left from a one-way street onto a one-way street pursuant to subdivision (b) of Section 21453.
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 8 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
Figure 6: Proposed Recommendations for intersection of Olney Street and Vane Avenue
LEGEND
Install 36"x36" Stop (R1-1)
CSigns (36"x36")
Install ALL WAY stop
�7plaque R1 -3P
Install Red retroreflective
strips on the signposts
� Repaint Crosswalk with Repaint Speed Limit
Yellow Ladder 1
Pavement Legend repaint
— STOP and STOP BAR at
= intersection
Stripe red curb
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 9 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
F-AaUT4I:ILTA 14ZIM
1. Turning Movement Counts
2. Stop Observance Olney Street at Vane Avenue
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 10 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
ATTACHMENT 1: TURNING MOVEMENT COUNTS
TURNING MOVEMENT COUNT
PROJEC7WA4 MoveJOXn[
ep t Cou
PROJECTNO: U
DATE'. 9-2-2021 S-SchoclagepeEesNian
A.ANulloetlestrian
TIME
N-SSTREET: VANE
NORTHBOUND
LEFT THRU RIGHT
SOUTHBOUND
LEFT T.R. RIGHT
N-3
TOTAL
E-WSTREET: Olney
EASTBOUND
LEFT THRU RIGHT
WESTBOUND
LEFT THRU RIGHT
EW
TOTAL
PEO COUNT
1111
3 A S A S A 3 A
NL NL SL SL EL EL WL W
OT:00.07:15
1 1
2
2 5
5
12
1
0).15-0)'.30
ST
SL
4
4
1 0
3di
ST
130)90-0)46
6
EL
3
3
2 914
3
EL
28
1
OT5
WR
41
ET
T
1 8
192808:00.08:16
WT
63
ET
4
4
1 10
tT
2908:15-08:30
WL
0
ER
1 2
3
2 14
13
30
2 108:90.08:45
NR
1 2
8
9 9
1224
108:45-09:00
0
0
0
1 1
2
2 12
15
31
PEAK -HOUR VOLUME ANALYSIS
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 11 of 13
CALCU LATER PEAK HOUR VOLU MESAMADJUSTED
PEAK HOUR VOLUMESAM
14
0
3
SR
ST
SL
SR
ST
SL
6
EL
WR
3
EL
WR
41
ET
0]:30-03:30
WT
63
ET
W
0
ER
WL
0
ER
WL
NL
NT
NR
NL
NT
NR
0
0
0
CALCULATED PEAK HOUR VOLUMES
-NOON
ADJUSTED PE" HOUR VOLUMES
-NOON
0
0
0
SR
ST
SL
SR
ST
SL
0
EL
WR
0
EL
WR
0
ET
133014:30
m
0
ET
Wr
0
ER
WL
0
ER
WL
NL
NT
NR
NL
NT
NR
0
0
0
CALCULATED
PEAK
HOUR VOLUMES
-PM
ADJUSTED
PEAK
HOUR VOLUMESPM
42
0
5
SR
ST
SL
SR
ST
SL
9
EL
WR
4
EL
WR
52
ET
18454]'45
WT
99
ET
m
0
ER
WL
0
ER
WL
NL
NT
NR
NL
NT
NR
0
0
0
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 11 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
ATTACHMENT 2: STOP OBSERVANCE OLNEY STREET AT VANE AVENUE
Table X: Summary of Vehicles not making a Complete Stop at the All -Way Stop located at—Olney at Vane
Hour:
Northbound
Southbound
Eastbound Along Westbound Along
7am-gam
Along Vane
Along Vane
Olney Olney
Number of
x
1
3
5
Vehicles that
2
Vehicles that
Rolled Through
Rolled Through
All -Way Stop
All -Way Stop
(California Stop)
(California Stop)
Number of
x
4
6
5
Vehicles that
5
Vehicles that
Ran the All -Way
Ran the All -Way
Stop
Stop
Total Vehicles
x
5
9
10
Table X: Summary of Vehicles not making a Complete Stop at the All -Way Stop located at—Olney at Vane
Hour:
Northbound
Southbound
Eastbound Along
Westbound Along
gam-9am
Along Vane
Along Vane
Olney
Olney
Number of
x
2
4
2
Vehicles that
Rolled Through
All -Way Stop
(California Stop)
Number of
x
5
7
5
Vehicles that
Ran the All -Way
Stop
Total Vehicles
x
7
11
7
Vine at Olney PM
Table X: Summary of Vehicles not making a Complete Stop at the All -Way Stop located at— Olney at Vane
Hour:
Northbound
Southbound
Eastbound Along
Westbound Along
4pm—Spm
Along Vane
Along Vane
Olney
Olney
Number of
x
3
3
5
Vehicles that
Rolled Through
All -Way Stop
(California Stop)
Number of
x
3
2
3
Vehicles that
Ran the All -Way
Stop
Total Vehicles
x
6
5
8
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 12 of 13
TECHNICAL REPORT: TRAFFIC REVIEW AT THE INTERSECTION OLNEY STREET AND VANE AVENUE
Table X: Summary of Vehicles not making a Complete Stop at the All -Way Stop located at -Olney at Vane
Hour:
Northbound
Southbound
Eastbound Along
Westbound Along
5pm-6pm
Along Vane
Along Vane
Olney
Olney
Number of
x
2
4
2
Vehicles that
Rolled Through
All -Way Stop
(California Stop)
Number of
x
5
4
11
Vehicles that
Ran the All -Way
Stop
Total Vehicles
x
7
8
13
CITY OF ROSEMEAD
Prepared By: Transtech Engineers, Inc. I Page 13 of 13