CC - Item 4C - Citywide 24-Hour Traffic Counts• •
TO: HONORABLE MAYOR
AND MEMBERS
RO MEAD CITY COUNCIL
FROM: ILL CROWE, CITY MANAGER,
DATE: ' OCTOBER 19, 2005
RE: APPROVAL OF PROPOSAL TO CONDUCT CITYWIDE ENGINEERING
AND TRAFFIC SURVEY AND CITYWIDE 24-HOUR TRAFFIC COUNTS
Attached for your consideration is an engineering proposal from Willdan to conduct an
engineering and traffic (E & T) survey for the City.
The California Vehicle Code (CVC) requires that cities complete an E & T survey every five
years in order to continue using radar traffic enforcement, but this time is extended to
seven years under certain circumstances. Recent changes to the CVC allow the time
period to be extended to 10 years if specific conditions are met, such as no significant
changes in roadway or traffic conditions. The purpose of the code provisions is to
guarantee that posted speed limits are kept reasonably accurate.
Without an extension, the City's current E & T survey will expire in January 2006, which is
seven years since the last study. Since 1999 when the last study was completed, traffic is
perceived to have increased significantly enough that an extension to ten years may not be
prudent and at least one City Council member has expressed concern regarding the posted
speed on certain streets. Therefore, in order to continue using radar to enforce the speed
limit after January 2006, a new E & T survey is recommended to be performed at this time.
The E & T survey will be completed in accordance with the procedures as outlined in the
Manual on Uniform Traffic Control Devices California Supplement and as required by the
CVC.
The proposed fixed fee to conduct the study is $19,740.00
It is recommended that the City Council approve the engineering proposal and direct staff
to begin the preparation of the engineering and traffic survey, and appropriate the
necessary funds from unappropriated General Fund reserves.
Attachment
O C T 25 2005
ITE&I No. -Tr. M-
~I •
~WILLD Public Agencies
October 19, 2005
Mr. Bill Crowe
City Manager
City of Rosemead
8838 Valley Boulevard
Rosemead, CA 91770
13191 Crossroads Parkway North, Suite 405
Industry, California 91746-3497
562/908-6200 fax 562/695-2120
www willdan com
Subject: Proposal to Conduct Citywide Engineering and Traffic Surveys
and Citywide 24-hour Traffic Counts
Dear Mr. Crowe:
Willdan is pleased to submit this proposal to conduct engineering and traffic surveys for
the City of Rosemead. The current Engineering and Traffic (E&T) Survey will expire in
January of 2006. This survey will be conducted in compliance with the provisions of the
California Vehicle Code (CVC), which require that such surveys be updated every 7
years to enable law enforcement agencies to perform radar enforcement. Recent
changes to the CVC have allowed this time period to be extended from 5 years to 7 or
10 years if specific conditions are met. The purpose of the code provisions is to
guarantee that posted speed limits are kept reasonably accurate and up-to-date.
The City of Rosemead's E&T survey will be completed in accordance with the
procedures outlined in the Manual on Uniform Traffic Control Devices (MUTCD)
California Supplement, dated May 20, 2004 Section 28.116 and as required by CVC
Sections 627 and 40802.
This proposal describes the detailed Scope of Work, Schedule, and Fee to perform the
engineering and traffic surveys including 24-hour traffic counts.
SCOPE OF WORK
Wllldan's project team will meet with City staff, Temple Sheriffs Department
representative, and other interested parties to discuss the City's engineering and
traffic surveys. This meeting will identify any issues that may be affecting
enforcement of the current engineering and traffic surveys.
2. Radar speed data will be gathered for each of the 42 street segments included in
the survey. The surveys shall not be conducted on weekends, school or civic
holidays, during congested peak traffic hours, or inclement weather conditions.
The data collected will consist of an optimum of 100 samples with 50 samples in
each direction but not less than 50 samples or more than 2 hours of
October 19, 2005 •
Page 2
measurement for each segment. The information will be recorded on field tally
sheets and will include date, time, field conditions, weather and engineering
calculations of the average speed, 85th percentile speed, 10 mile-per-hour
(MPH) pace speed, and percent-in-pace.
Current radar speed data will be collected by a trained, certified radar operator
using a certified hand-held radar unit. The results will be analyzed to determine
the average speed, critical speed, and 10 mph pace.
3. Using the existing,survey data for reference, a field review and assessment of
each street segment will be conducted to determine traffic and roadway
conditions that a63 not readily apparent to motorists. Existing speed limit
postings and locations will be verified. Roadway and traffic conditions, major
traffic control devices, adjacent land use, and pedestrian activity will be noted.
Any changes in roadway conditions since the last survey was conducted will be
identified and noted on the survey data sheets. All field inspections will be made
on weekdays when school is in session.
4. For each street segment, collision records for the most recent 2-year period
using the City's Crossroads collision reporting system will be reviewed and
summarized. Collision rates will be calculated and compared with the State of
California average collision rates for similar roadways and street segments. The
results will be summarized on survey data sheets and in tabular form.
The data gathered in the previous tasks will also be summarized on the survey
data sheets. Each :survey data sheet will contain all of the information necessary
to determine the appropriate speed limit for each street segment surveyed.
After collection of all data above, the survey data sheets will be analyzed to
determine the recommended speed limit based on the latest State requirements.
The reasons given in the previous E&T Survey for reducing speed limits will be
considered when determining the recommended speed limits. The
recommended speed limits will be provided on the survey data sheets and
summarized in tabular form in the Report.
5. All of the tasks in this project will be documented to form the basis of the Final
E&T Report. The Report will include a written explanation of "Realistic Speed
Zoning" and the requirements for conducting speed zone surveys. The Report
will document the methodology and procedures used for the survey, statistical
analysis factors, field data collection description, collision history, results and
recommendations. It will also include excerpts from the California Vehicle Code
that pertain to the establishment of speed limits.
The E&T Report will include a summary of recommendations and certification
pages that are often useful in presentation of information to City Council and for
October 19, 2005
Page 3
use in the court system. A summary of recommendations will be prepared in
chart form including the street name, street segment, existing speed limit,
recommended speed limit, critical (85th percentile) speed, mean speed, 10-mile
per hour pace range, percent in pace, date of survey, and reason for speed limit
change from We 85th percentile. Willdan carefully constructs the
recommendations summary to include clear descriptions of the application of
"conditions not readily apparent to motorists" in order to facilitate consistent
interpretation of the report by the court system. Other portions of the Report will
include the Table of Contents, tables, figures, and appendices such as the
survey data sheets for each roadway segment and certifications for radar
equipment and teciinicians.
6. Two (2) copies of the Draft E&T Report will be prepared and delivered to the City
for consideration by City staff and Temple Sheriffs Department representative.
Following review apd approval by City staff and the Temple Sheriffs Department
representative, three (3) bound copies of the Final E&T Report will be delivered
to the City for approval by the City Council. The Final E&T Report will include a
list of recommended speed limit increases and decreases. Please note that with
the recent adoption of the 2003 Manual on Uniform Traffic Control Devices
(MUTCD) and the California Supplement dated May 2004, the method of
determining the recommended speed has changed from that in the past and this
change can result in some recommended speeds being higher than under the
previous method.
One electronic copy of the Final E&T Report and data files will be provided to the
City in MS Office format or a mutually acceptable format.
7. Twenty-four hour diirectional machine traffic volume counts will be conducted by
a traffic counting company subconsultant for 42 street segments. The counts will
not be conducted on weekends, Mondays or Fridays. Traffic volume data will be
collected in hourly increments.
PROPOSED SCHEDULE
Willdan expects to be completed with all work, except submittal of the Final E&T Report
and Final Traffic Count Ri~port as defined in the Scope of Work within 8 weeks after a
notice-to-proceed. Upon receipt of City comments on the Draft Reports, Willdan will
submit the final reports within 2 additional weeks. Willdan will proceed with due
diligence to complete all work in a timely and efficient manner to meet the City's need to
approve the Final E&T before the end of January 2006.
October 19, 2005
Page 4
PROPOSEDFEE
Willdan proposes to provide the professional traffic engineering services outlined in this
proposal for a lump sum fix fee of $19,740.00. This fee is based on 42 street segments
at $470 per segment including a directional traffic volume count for each segment.
Should you have any questions regarding our submittal, please contact Ms. Vanessa
Munoz at (562) 908-6225 or Mr. Lew Gluesing, P.E., T.E., at (562) 908-6291.
Respectfully submitted,
WIL N
Lew Gluesing, P.E., T.E.
Vice President
wC. Pagett, P.E.
Senior Vice President
e4
Copy: Joanne Itagaki
Vanessa Munoz
JI mh
95610-05106-1601P05-197