CC - Item 4C - Installation of Intersection Approaching Signs \f,
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TO: HONORABLE MAYOR 1
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AND MEMBERS
ROSEMEAD CITY COUNCIL
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FROM: FRANK G. TRIPEPI, CITY MANAGER
DATE: February 25, 1997
SUBJECT: INSTALLATION OF INTERSECTION APPROACHING SIGNS
Staff received a request from the Temple Sheriffs Station, to install STOP signs on Ralph Street
at Hart Avenue. The concern is that the Sheriff cannot use laser speed enforcement because of
the overall length of Ralph Street from Rosemead Boulevard to Rio Hondo Avenue.
Staff investigated the site and found that the situation does not meet the guidelines outlined by
the Caltrans Traffic Manual that would warrant a multi-way stop at this location. However, the
request is valid and the Traffic Commission agreed to the recommendation of installing
"Intersection Approaching" signage at this location and the placement of the radar speed trailer
on Ralph Street and Guess Avenue.
RECOMMENDATION:
The Traffic Commission voted 5-0 to recommend that the City Council approve the installation
of Intersection Approaching signs (per attached diagram).
Exhibits: A. Traffic Commission Staff Report I COUNCIL AGENDA
B. Traffic Commission Minutes (February 6, 1997)
C. Diagram for dimensions of sign installation 1997
ITEM No. Tr. c6`e--
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TO: HONORABLE CHAIRMAN
AND MEMBERS
ROSEMEAD TRAFFIC COMMISSION
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FROM: JOANNE ITAGAKI
DEPUTY TRAFFIC ENGINEER OF4
DATE: JANUARY 28, 1997
RE: REQUEST FOR STOP SIGNS ON RALPH STREET
AT HART AVENUE
REQUEST
A request has been received from the Temple Sheriffs Station to install STOP
signs on Ralph Street at Hart Avenue. The Sheriff was contacted by a resident
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indicating there are "numerous speeders" on Ralph Street. The Sheriff, however,
cannot use laser enforcement of the speed limit because of the overall length of
Ralph Street from Rosemead Boulevard to Rio Hondo Avenue. The STOP sign
installation was requested to alleviate some of the speeders and permit laser
enforcement on Ralph Street.
CONDITIONS
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Ralph Street is a 30-foot east/west residential roadway. There are no stripes on
the roadway and curb and gutter exist on both sides of the street. The prima
facie speed limit on Ralph Street is 25 mph.
Hart Avenue is a 30-foot north/south residential roadway. Hart Avenue
terminates south of Ralph Street. Hart Avenue is STOP controlled at its
intersection with Ralph Street. The prima fade speed limit on Hart Avenue is also
25 mph.
DATA
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The reported accident history was reviewed for the period from January 1, 1993
through September 30, 1996 for the intersection of Ralph Street and Hart
Avenue. Only one accident was reported during this period occurring in 1995.
This accident involved a southbound vehicle proceeding straight broadsiding an
eastbound vehicle proceeding straight. The cause of this accident was reported
as a failure to yield right-of-way. No injuries were reported.
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EXHIBIT A
Traffic count data was also obtained for the approaches to the intersection. This
count indicated the following 24-hour volumes:
Northbound 31
Southbound 417
Eastbound 641
Westbound 424
DISCUSSION
Multi-way STOP signs are installed based on the guidelines from the Caltrans
Traffic Manual. These guidelines are identified on the attached sheet.
The first guideline deals with the installation of STOP signs as an interim
measure for an urgently needed traffic signal. The intersection of Ralph Street
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and Hart Avenue does not satisfy this guideline.
The second guideline reviews the location's most recent 12-month period
accident history. The guideline suggests a history of 5 or more broadside-type
accidents occurring in this period. As stated previously, only one accident was
reported during the three year period analyzed.
The third guideline analyzes the traffic volumes of the intersection. The total
traffic volume entering the intersection does not meet the 500 vehicles/hour for
any 8 hours guideline. In addition, the traffic volume from the Hart Avenue does
not satisfy the 200 units/hour during the same 8 hour period.
The request of the Sheriff, however, is valid. Both Ralph Street and Guess
Avenue are uncontrolled between Rosemead Boulevard and Rio Hondo Avenue.
The enforcement of the prima facie speed limit by means other than laser would
be very difficult without motorists recognizing they are being "tracked".
The accident history indicates motorist are traveling through the intersection with
due care. The installation of STOP signs on Ralph Street would likely increase
the number of accidents occurring at the intersection primarily due to
noncompliance of the STOP signs by motorists. Motorist would eventually
consider the STOP.. signs unjustified because of minor cross traffic from Hart
Avenue.
RECOMMENDATION
Therefore, the installation of STOP signs on Ralph Street at Hart Avenue is not
recommended at this time. The placement of the radar speed trailer on Ralph
Street and Guess Avenue is recommended to remind motorists of the speed limit
- on these streets.
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0"s6 CITY OF ROSEMEAD
MULTI-WAY STOP SIGN WARRANTS
(FROM CALTRANS TRAFFIC MANUAL)
LOCATION: al • ; e .7F ri 4 tn
DATE: 1/z4/9
The installation of multi-way STOP signs are based on the following:
1. Where traffic signals are warranted and urgently needed, the multi-way
STOP may be an interim measure that can be installed quickly to control
traffic while arrangements are being made for the signal installation.
Satisfied: Yes o
.2. An accident problem, as indicated by five or more reported accidents within
a 12 month period of a type susceptible to correction by a multi-way STOP
installation. Such accidents include right- and left-turn collisions as well as
right-angle collisions.
3. Minimum traffic volumes: Satisfied: Yes IVO)
(a) The total vehicular volume entering the intersection from all
approaches must average at least 500 vehicles per hour for any 8
hours of an average day, and
Satisfied: Yes 6)
(b) The combined vehicular and pedestrian volume from the minor
street or,highway must average at least 200 units per hour for the
same 8 hours, with an average delay to minor street vehicular
traffic of at least 30 seconds per vehicle during the maximum hour,
but
Satisfied: Yes No
(c) When the 85-percentile approach speed of the major street traffic
exceeds 40 miles per hour, the minimum vehicular volume warrant
. is 70 percent of the above requirements.
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VOLUME WORKSHEET Satisfied: Yes421)
Guideline � � `;,
Ac` ti
(a) Total Volume 500 (350) 123'1 1536 I z5s 1490 145ci 12.6s I zvi
(b) Combined Volume 200 (140) I GI I [CZ- I 5 115`1 1 i53 I Se: 14D 13"L I
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B. REQUEST.FOR STOP SIGNS ON RALPH STREET AT
HART AVENUE
This request came from the Temple City Sheriffs Station to install STOP signs on
Ralph Street to allow laser enforcement of speeds on Ralph Street.
Deputy Traffic Engineer Itagaki presented the staff report.
RECOMMENDATION:
The installation of STOP signs on Ralph Street at Hart Avenue is not
recommended at this time. The placement of the radar speed trailer on Ralph
Street and Guess Avenue is recommended to remind motorist of the speed limit on
these streets.
Commissioner Ruiz asked if an "Intersection Signs" (Warning Signs) would be
feasible at this location.
Deputy Traffic Engineer Itagaki stated that they might be of some help.
It was moved by Commissioner Ruiz, seconded by Commissioner Knapp, and
carried unanimously to approve the Traffic Engineer's recommendation with the
addition of an "Intersection Sign" on both streets and placed within 200 feet.
V. STAFF REPORTS - NONE
VI. COMMISSIONER REPORTS
Commissioner Tirre reported to the Commission that last Thursday, he suffered a slight
stroke and was taken to the hospital, he reported he is feeling fine.
The Commission wished him well!
Commissioner Knapp asked staff to look into the signal at Delta and Mission Drive. She
received this request from Judy Thompson of the California Christian Home. Ms.
Thompson has seen some near misses.
Commissioner Quintanilla stated that he would like staff to look at the timing of the lights
at the corner of Mission, Rio Hondo and Valley (where they all meet), after the hours of
9:00 p.m.
Chairman Larson stated that he is concer^-a
and Garvey. He indicated that there is a:
the solicitor and the person giving the m:
IXiiiI13
IT BAssistant City Manager Don WaWiner sta
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