HomeMy WebLinkAbout6.1 EstSpeedLmtsDBCITY OF DUBLIN
AGENDA STATEMENT
City Council Meeting Date: July 25, 1994
SUBJECT:
Public Heating: Ordinance Establishing Speed Limits for Dublin
Boulevard from Dougherty Road to the Southern Pacific Railroad
Right-of-Way, Scarlett Drive, and Scarlett Court
Report by: Public Works Director Lee Thompson
EXHIBITS ATTACHED:
1) Draft Ordinance
2) Speed Survey Forms
3) Location map
RECOMMENDATION:
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 from Dougherty Road to the
SPRR, Scarlett Drive, and Scarlett Court
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 July 11 th 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 means 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 certain streets such as 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.
To date, speed limits have not been set for the new extension of Dublin Boulevard east of Dougherty
Road. In accordance with the CVC requirement, TJKM conducted radar speed surveys on segments
of Dublin Boulevard from Dougherty Road to the Southern Pacific Railroad (SPRR) Right-of-Way,
on Scarlett Drive, and on Scarlett Court.
The speed survey process involves using three criteria to determine the speed limit. The first criterion
is using 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
criterion is the design and geometrics of the road, such as curvature, sight distance, and intersecting
driveways or cross streets. The third criterion is the number of accidents and safety of the road due to
vehicle speed.
Following are the results of the speed surveys and the recommended speed limits for each roadway
segment.
Dublin Boulevard From Dougherty Road to the Southern Pacific Right-of-Way:
85th percentile speed:
, 44 mph
Recommended speed limit:
35 mph
The 35 mph speed limit is recommended due to the curvature of the roadway and to establish
consistency with Dublin Boulevard west of Dougherty Road.
ITEM NO.__~_~ ................ ~ .....-~- ................................................................ COPIES TO: Carl Springer, TJKM ! I::ll..l= I- ......
Businesses on Scarlett Ct. L
and at Dublin/Dougherty Intersection
Scarlett Drive (New road along the flood control channel connecting Dublin Boulevard with
Scarlett Court)
85th percentile speed:
42 mph.
Recommended speed limit:
35 mph.
Based on the 85th percentile speed, the narrowness of the road, the shortness of this segment
(1200') and a desire for consistent speed zoning in the area, a 35 mph speed limit is
recommended.
Scarlett Court (Resurveyed because of changes to the flow pattern.)
85th percentile speed:
39 mph.
Recommended speed limit:
35 mph.
This is a change from the current, adopted speed limit of 30 mph. The recommended 35 mph
speed limit supports the 85th percentile speed of 39 mph, and there are no roadway
characteristics that would warrant a lower speed limit.
No reported speed-related accidents have occurred on any of these street segments.
Speed limits for Dublin Boulevard east of the Southern Pacific Railroad right-of-way and for
Hacienda Drive will be set once the improvements and roadway dedication have been accepted by
Dublin from Pleasanton.
Staff recommends that the City Council conduct a public hearing, deliberate, waive the reading, and
adopt the ordinance establishing speed limits for Dublin Boulevard from Dougherty Road to the
Southern Pacific Railroad Right-of-Way, for Scarlett Drive, and for Scarlett Court.
a: (9495) ~july la gstspd
Page 2
ORDINANCE NO. -94
AN ORDINANCE OF THE CITY OF DUBLIN
ESTABLISHING SPEED LIMITS FOR DUBLIN BOULEVARD
FROM DOUGHERTY ROAD TO THE SOUTHERN PACIFIC RAILROAD RIGHT-OF-WAY,
FOR SCARLETT DRIVE, AND FOR SCARLETT COURT
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 Dougherty Road to the Southern Pacific
Railroad Right-of-Way:
35 miles per hour.
Scarlett Drive:
35 miles per hour.
Scarlett Court:
35 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 25th day of July, 1994.
AYES:
NOES:
ABSENT:
ATTEST:
Mayor
City Clerk
a: (9495})'uly lordspeed
J.
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City of Dublin
Speed Limit
EngineeringJTraffic Survey
'~ I~ _300
Length (feet):
Location of Survey
Date Taken
Posted Speed
Pace Speed
% In Pace, Above, Below
Critical Speed (85%)
Range of Speeds
Width (ft): 39 No. of Lanes (Both Directions):
Averaae Daily Traffic: 7, ~/~'O Date Taken:
Special Conditions (Par'king, Roadway Alignment, Land Use, School Area, etc.):
.................................................................. ~:: ::::::::::~:: :: ....................................... :¥:¥ :: ~:: :: ~: :: ~: :: :: :: ~: ? ~: ~: :: ~: :: :: ~: ~: :: :: :: :: ::? :: :::: ::~ ::: :: :::: :::::::::::::::::::::::::::: :: ::: ~: :: ::~:::: ::: ::::-:. :: ::.: :.~::::~:::. ::~ ~: :.:::: :.:: :: ::::: :::::::::::::::::::::::::::::: :::.
:::::::::::::::::::::: :5: ~: :::: ~:::: q ~:: ::J~:~:~i[:i:}:iqk; ik;:::}:~ :~::::::::: ::::::::::::::::::::::::::::::::::: ~:::i ~: ::::::::::::::::::::::::::::::::::::::::: : : ' '":' :'":'"'?"~'"":':"'" ' ..............................
Accident Period ~alyzed: ~ ~ 5~ ~'~ -'d4~ m~
Number of Accidents (List total and each ye~):
Number of Speed-Related Accidenm ~otal & each year):
~lculated Accident Rate: - Statewide Average Rate:
. ............ -.-.- ....-.. - · .....-.. · ........-...-:.: ..:.: :.:: :.: :: :.: :.:.-:.:-:: :-: ::+:-: :-::-: ::.:-: :-: ~-: :.:::.::: :: ::: ::::::::::::::: :::::5::::::::::::::::::::::::~: ~:~
Recommendations: ~l:~ ~ ~rv~.,~d ~ Map:
Study Prepared By:
. i /
Date: 5/"2'/
^ oved
/
Date: g./ a
Approved Speed Limit: ~ 5 mph
Per CVC 40803, Survey Expires:
City of Dublin
Speed Limit
Engineering/Traffic Survey
Street: ~C-~lg~' ~)r'. Limits: .]-)14~li~ BI. '~ 5r-~r/e~ ~ngth (feet): / ~
Lo~tion of Su~ey
Date Taken
Posted Speed
Pace .Speed
% ~ Pace, Above, Below
Criti~t Speed (85%)
Ranee of Speeds .....................................
Width (ft): ~ 7 No. of ~nes (Both Directions):
Average Daily Traffic: ~)~ ~ Date Taken:
Special Cenditiens (Par~g, Roadway Alignmeng Land Use, School ~ea, etc.):
Accident Period Analyzed: "(- ao.o s-~e.~,'P - ,,to da'b,
Number of Accidents (List total and each year):
Number of Speed-Related Accidents (Total & each year):
Calculated Accident Rate: ~ Statewide Average Rate:
Recommendations: 'Z~Fd~ Off -ffx~ 5-/4or'~55 cfi: Map:
Study Prepared By:
Date: ~7~
Approved Speed Limit: 5~ .mph
Per CrC 40803, Survey Expires:
City of Dublin
Speed Limit
Engineering/Traffic Survey
Street: 56o'{e'~' F-tiC. Limits: Dlxb{itd ~l~. 'J-D ~ PfVmi~N;
Length (feet):
Date Taken ~/l~/fg ~ I !
Posted Speed ~O~f~ ]
Pace Speed ~O -g~ I '
% ~ Pace, Above, Below ~2 ]~t /Z
Critiml Speed (85%) ~
Range of Speeds Zg-ff~ .......................... : ......................... · ........
.~ ......................................... . .....--.-...:.-.-......- ......-;---u- ::7. ':--'--::. , .... ..- --- .......
Widt~ (ft): ~$ No. of ~nes (Both Directions): ~
Average Daily Traffic: I.~ (o ~ g Date Taken:
Special Conditions (Parking, Roadway Alignment, Land Use,
School Area, etc.):
............................ .......-.--...-....-.-.-....-.-.. ,-......,..-.-,--..-.-.: :-.--::: :.:: :.:.:.:.:.:.:.:.: :.: :.:: :.:.: :.: :.:.: ::: :.: :.: ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Accident Period ~aiyzea: I/I/~1 -- I~/gl/
Number of Accidents (List toul and each year): ~ (}~q3
.
Number of Speed-Related Accidents ~otal & each year): J
~Iculated Accident Rate: ¢.~Z a~< Statewide Average Rate:
Recommendations' ~5~ ~ ¢~ Cv;(~[ ggf~, _ [Map:
bC
Study Prepared By:
t
Date: ~/{Te~
Approved By:_ .~e~'?,~, 9-~-'
Date: d~/~]~q ,
Approved Speed Limit: 3 ~ mph
Per CVC 40803, Survey Expires: ~//) / q a
PROPOSED SPEED LIMITS
N.T.S.
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