HomeMy WebLinkAbout6.1 DB EastSPRR&HaciendaSpdCITY OF DUBLIN
AGENDA STATEMENT
City Council Meeting Date: October 3, 1994
SUBJECT:
Ordinance Establishing Speed Limits for Dublin Boulevard East
of Southern Pacific Railroad Right-of-Way and for Hacienda
Drive
Report by: Public Works Director Lee Thompson
EXHIBITS ATTACHED:
1) Draft Ordinance
2) Speed survey forms
3) Location map
RECOMMENDATION~
1)
2)
3)
4)
5)
Open public hearing
Receive Staff report and public comment
Question Staff and the public
Close public hearing and deliberate
Waive reading and adopt ordinance establishing speed
limits for Dublin Boulevard East of the Southern Pacific
Railroad Right-of-Way and for Hacienda Drive.
FINANCIAL STATEMENT:
The cost for posting of speed limit signs and pavement markings
is estimated at $1,000. Sufficient funds are budgeted in the
Street Maintenance Operating Budget for this purpose.
DESCRIPTION: This is the second reading of a proposed ordinance that was
introduced at the September 12, 1994, City Council meeting.
Sections 22357 and 40803 of the California Vehicle Code (CVC) require a local authority to
determine and post speed limits on the basis of an engineering and traffic survey. Speed limit
enforcement by use of radar or other electronic devices cannot be used in court for streets with
adopted speed limits that are not justified by an engineering and traffic survey (except residential
streets with a width of 40 feet or less). The CVC further states that said determination and
declaration of the speed limit shall be accomplished by adoption of an ordinance.
In accordance with the CVC requirement, TJKM conducted radar speed surveys on segments of
Dublin Boulevard and on Hacienda Drive. The speed survey process involves using several criteria to
determine the speed limit. The first step is use of radar to measure the speed of a sample of traffic
using the road. The "85th percentile" or "critical" speed is the speed at or below which 85% of the
vehicles are traveling. The second step is a review the design and geometrics of the road, such as
curvature, sight distance, and intersecting driveways or cross streets. The third step is a review of the
number of accidents and safety of the road due to the speed of the vehicle.
Following are the results of the speed surveys and the recommended speed limits for each roadway
segment.
Dublin Boulevard Between the Southern Pacific Railroad Right-of-Way and Hacienda Drive:
85th percentile speed:
56 mph
Recommended speed limit: 45 mph
The 1000' curve radius of this portion of the road is designed for a speed of 45 mph.
Hacienda Drive (Dublin Blvd. to 1-580)
85th percentile speed:
49 mph
Recommended speed limit:
45 mph
ITEM NO.~~_ COPIES TO: Camp Parks
Alameda County
C~ty of Pleasanton
A 45-mph speed limit is consistent with the 85th percentile speed of 49 mph.
Dublin Boulevard Between Hacienda Drive and Tassajara Road
85th percentile speed: 53 mph
Recommended speed limit: 50 mph
A 50-mph speed limit is consistent with the 85th percentile speed of 53 mph. This portion of
the road is fairly isolated, straight, and flat, with vacant land along the entire frontage.
Since the time the radar surveys were performed, two accidents have occurred that were determined
by Dublin Police Services to have been caused by "unsafe speed for conditions." The first was a
minor rear-end accident that occurred at the stop sign for westbound Dublin Boulevard at Hacienda.
The second was a single-vehicle accident in which the driver's attention was diverted and she struck
the barricades at the Dublin Boulevard/Hacienda Drive intersection.
Staff recommends that the City Council conduct a public heating, deliberate, waive the reading, and
adopt the ordinance establishing speed limits for Dublin Boulevard east of the Southern Pacific
Railroad right-of-way and for Hacienda Drive.
a: (9495.) lseptemberlagstspd
Page 2
ORDINANCE NO. -94
AN ORDINANCE OF THE CITY OF DUBLIN
ESTABLISHING SPEED LIMITS FOR DUBLIN BOULEVARD
EAST OF THE SOUTHERN PACIFIC RAILROAD RIGHT-OF-WAY
AND FOR HACIENDA DRIVE BETWEEN DUBLIN BOULEVARD AND 1-580
The City Council of the City of Dublin does ordain as follows:
Section 1: In accordance with California Vehicle Code Section 22357 and Dublin
Municipal Code Section 6.04.340, the following speed limits are established:
Dublin Boulevard from the Southern Pacific Railroad Right-of-Way
to Hacienda Drive: 45 miles per hour.
Dublin Boulevard from Hacienda Drive to Tassajara Road: 50 miles per hour.
Hacienda Drive from Dublin Boulevard to 1-580: 45 miles per hour.
Section 2:
Traffic Code.
The above speed limits shall be added to Chapter 6.60 of the City of Dublin
Section 3: This ordinance shall become effective 30 days after its final passage and
adoption by the City Council. The City Clerk of the City of Dublin shall cause this ordinance to be
posted in at least three (3) public places in the City of Dublin in accordance with Section 36933 of the
Government Code of the State of California.
PASSED, APPROVED, AND ADOPTED this 3rd day of October, 1994.
AYES:
NOES:
ABSENT:
ATTEST:
Mayor
City Clerk
a:(9495) Iseptemberiordspeed
City of Dublin
Speed Limit
Engineering/Traffic Surwey
Street: ~t4 ~/[rl ~ /Vd. Limits:
Length (feet):
Location of Survey
Date Taken
Posted Speed
Pace.Speed
% In Pace, Above, Below
Critical Speed (85%)
% ,.pt,
Range of Speeds
Width (ft): ¢ [ No. of Lanes (Both Directions):
Averaee Daily Traffic: ~,'2.00 Date Taken:
Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.):
/
Accident Period Analyzed: ~ IQCcc; s'b,"e~ 5¢6.'1~0t~- da~'ck ~c.;t'[- ,~
Number of Accidents (List total and each year):
Number of Speed-Related Accidents (Total & each year): ~
Calculated Accident Rate: ~ Statewide Average Rate:
Recommendations:
'
/~ i5 r~omme~gdd
~p,4.
Study Prepared Bv:
'
Approved By:
Date:
Approved Speed Limit:
Per crc Surve
City of Dublin
Speed Limit
Engineering/Traffic Survey
Street: ~0¢i ~d~, D(;vC Limits:
~ngth (feet):
~tion of Su~ey
Date Taken
Posted Speed
Pace Speed
% In Pace, Above, Below
Critical Speed (85%)
Date:
Approved By:
Date: ~./ l ?./q~
Approved Speed Limit: ~ ~ mph
Per CVC 40803, Survey Expires:
Range of Speeds
Width (ft): ~g No. of ~nes (Both Directions):
Average Daily Traffic: Date Taken: /~/
Special Conditions (ParkNg, Roadway Alignment, ~nd Use, School ~ea, etc.):
Accident Period ~alyzed: ~ ~g~ g~e~ 5~
Number of Accidents (List total and each year):
Number of Speed-Related Accidents ~otal & each yea0:
~Iculated Accident Rate: - Statewide Average Rate:
City of Dublin
Speed Limit
Engineering/Traffic Survey
Street: I-)ut, lin ~lt/C~. Limits: '~5£a)~.r& ~-~.j.
Length (feet): ~ '700
Location of Survey to'
Date Taken
Posted Speed
Pace .Speed
% In Pace, Above, Below
Critical Speed (85%)
Range of Speeds
Width (ft): 3q No. of Lanes (Both Directions):
Average Daily Traffic: g/~, O0 Date Taken:
Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.):
Accident PeriodAnalyzed: /(/e. ov 519e6;= fdvlS'o~ - dM-~, "o~-
Number of Accidents (List total and each 3,ear):
Number of Speed-Related Accidents (Total 8: each year):
Calculated Accident Rate: ~ Statewide Average Rate:
Date: O~/t 7f c~ ~
Approved Speed Limit: ~o . mph
Per CVC 40803, Survey Expires:
Map:
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HACIENDA DR
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LIMITS
ALAMEDA
COUNTY