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CITY OF DUBLIN
AGENDA STATEMENT
City Council Meeting Date: July 11, 1994
SUBJECT:
Public Hearing: 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:
I) ~Draft Ordinance
2) / Speed Survey Forms
3) /Location map
RECOMMENDATION:qf 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 introduce 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.
nESCRIPI10N: Sections 22357 and 40803 of the California Yehicle Code (CYC)
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 CYC 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 Doueherty Road to the Southern Pacific Rieht-of-Way:
85th percentile speed:
Recommended speed limit:
44 mph
3S 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.
______QJ T Y
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Businesses on Scarlett Ct.
and at Dublin/Dougherty Intersection
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Scarlett Drive (New road along the flood control channel connecting Dublin Boulevard with
Scarlett Court)
85th percentile speed:
Recommended speed limit:
42 mph.
3S 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:
Recommended speed limit:
39 mph.
3S 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 P1easanton. '
Staff recommends that the Ci~ Council conduct a public hearing, deliberate, waive the reading, and
introduce 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) Vuty lagstspdi
Page 2
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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-oj- 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 ADOPI'ED this _ day of
AYES:
NOES:
ABSENT:
, 1994.
Mayor
ATTEST:
City Clerk
a:(9495) Vuly lordspeed
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City of Dublin
Speed Limit
Engineering/Trame Survey
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Limits: Dou~l,er~ (La. +n ~c.a,...kft- Dr,
Length (feet): ~ 'J 300 '
Location of Survey
Street:
Dl.\blin ~/vd.
Date Taken
Posted Speed
Pace Speed 33- Y2 mr.
% In Pace, Above, Below 91 2-'2- I q
Critical Speed (85%) L/i.f ~ t,
Range of Speeds 22 - (PO Mlh
Width (ft): 3~ No. of Lanes (Both Directions): 2-
'1/$"/1'1
Average Daily Traffic:
7, '5'0
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Date Taken:
Special Conditions (Parking, Roadway Alignment, Land Use, School Area, etc.): RdJ d"iJ;(-ft,HJ~;f
lvt.A"C4ftd ~ r"t45oJt$b/( 7: (tJ, ?h ftf. J, I" tt..e. ""YC/l !It($ f' #1.01!.
,,!~"C u~~~'$ Ii" d5.'ru).ed {:u., if 0"'1 Du ~ /;#1 If/vi. ~s f 'Po (I" f2J;s ~s;..f'/" .
Accident Period Analyzed: :a( /\Jew s+ree-f SediC>1-"04.fo.. Y'Of e,1va;ld,le
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Number of Accidents (List total and each year):
Number of Speed-Related Accidents (Total & each year):
Calculated Accident Rate: Statewide Average Rate:
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Study Prepared By: u,.IO. 5Prl'jer/ CW/l/Dp4tr ( j6'Jt?-t/
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Date: 5//"2- / 'I if
Approved By: ' #I ),"'M q r
Date: b / 2-1.//'4
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Approved Speed Limit: 3, mph
Per eve 40803, Survey Expires:
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City of Dublin
Speed Limit
Engineering/Traffic Survey
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limits: _Du b Ii Vl "IS I fz> 5~~.Y / elf ef
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Length (feet): 1'2.00
Location of Survey jl)'Ol ~O Dl.lj,li.. Bl.
Date Taken if/'),.' /11/
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Street:
SCttv-lett D("
Posted Speed
Pace Speed
32- - ifl
% In Pace, Above, Below 5' fD J 2.1 J 2.3
Critical Speed (85%) If 2-
Range of Speeds )...~ -s; to
Width (ft): "2.- 7 No. of Lanes (Both Directions): 2-
Average Daily Traffic: I) 701 Date Taken: 5 /" / 1 t.f
Special Conditions (Parking, Roadway Alignment, L'md Use, School Area, etc.): /Vo ~J4f} Yl4J
Iro pvf\ "S ~'" 1N. e 6 s f- si J..t J no c;ko1411 (.f~ .
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Accident Period Analyzed + 11.tt.J ~ J.keJA..--r - Vlo da.h 6.v 0.,'1 a.~l e
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Number of Accidents (List total and each year):
Number of Speed-Related Accidents (Total & each year): -
Calculated Accident Rate: - Statewide Average Rate:
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Recommendations: 8ti5ed on ftte 5"Mol"'"fYtes5 of Map:
-f!.e seg rntn f.' -#Ie /acJ. of 5'b~ Utrs: ad t:\
de!iYe (Ov Cov..rislenr rpaJ i'o"'fi'f.4 111 ft.e
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ovu. 'l qt; IVIp7J.. 5pe41 /iJ'hr'f i~
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Study Prepared By: &rll). ~p;-:n:~/ {ltn?fJtev 5.)t..r'vr~1
Date: 5'/12/'1'1
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Approved By A~t..0- 9r
Date b'j 2 )/1u
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Approved Speed Limit: '), mph
Per cve 40803, Survey Expires U / Z I .I ~ ~
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City of Dublin
Speed Limit
Engineering/Traffic Survey
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Street: Sec.-left ct
Limits: Du~liVl 1311/4. +v e4tYl fevYMi/IJu>
Date Taken
Posted Speed
Pace Speed
% In Pace, Above, Below
tZ
Critical Speed (85%)
Width (ft):
No. of Lanes (Both Directions):
I) ~ ~ S Date Taken:
Average Daily Traffic:
Recommendations: ~s.~ 0/1'\ ~<! CVlnc.A..\ spetd. .
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r+- ~S r'"UoVl'1 f1.1 evuJ u ~t- a speed- I:Vltit-
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Map:
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Study Prepared By: (lvl I), 5fn'nfv!a,nsfvpt&~./~~ttl
Date: 5/t2-/9/.f' I
Approved By: . ~ ",t.~~1 <:} j.vL...
Date: t I z...uh4
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Approved Speed Limit: 3 7 mph
Per cve 40803, Survey Expires: U 11').1 q ~
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PROPOSED SPEED LIMITS
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