HomeMy WebLinkAbout7.2 Traffic Study Dublin Blvd. s
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CITY OF DUBLIN
AGENDA STATEMENT
CITY COUNCIL MEETING DATE: December 12 , 1983
SUBJECT Traffic Study - Dublin Boulevard/Clark Avenue/Lewis
Avenue/Village Parkway
EXHIBITS ATTACHED Memo from Traffic Engineer dated December 7 , 1983
RECOMMENDATION Direct Staff to include intersection signal
improvements in the next revision of the Capital
Improvement Program
FINANCIAL STATEMENT: No short term financial requirements ; when signals are
actually installed, their approximate cost will be
$100 , 000 each
DESCRIPTION At the City Council meeting of October 24 , 1983 , the
City Council received a request from Mr. Gerald Abernathy, 6699 Maple Drive,
requesting traffic safety investigations of the intersections of Dublin
Boulevard @ Clark Avenue, Village Parkway and Lewis Avenue . As indicated in
the Traffic Engineer ' s report ( see attached) , both locations are marginally
warranted for the installation of traffic signals and signals should
eventually be installed at both locations . In order to install the signals
in their proper priority, it is recommended that they be included in the
next revision of the Capital Improvement Program.
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COPIES TO: Gerald Abernathy
6699 Maple Drive
ITEM NO. Dublin, CA 94568
ol
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MEMORANDUM
DATE: December 7 , 1983
TO: City Engineer
FROM: Chris D. Kinzel
SUBJECT: Intersection Investigations - Dublin Blvd./Clark Avenue _
and Village Parkway at Lewis Avenue
At the request of the City Council , I have examined the traffic
operating conditions at the intersection of Dublin Boulevard/Clark
Avenue and Village Parkway/Lewis Avenue. The geometric layout and past
accident trends were reviewed for each intersection. Field observations
and traffic volume investigations were also performed. This memorandum
summarizes our investigations.
Intersection of Dublin Boulevard and Clark Avenue
In 1983, up to date, five accidents have occurred within 530 feet of the
intersection . The primary collision factor was either "driving at
unsafe speed" or "unexpected turning movements" . It now appears that
traffic signalization is warranted at this intersection , based on
existing traffic volumes and the accident experience.
Street lighting at this intersection should be improved as quickly
as possible, because the existing street lighting at the crossing is
poor . This improvement could assist in reducing the accident
potential .
Four-way stop signs are not recommended for use at this
intersection , due to the impedence of traffic flow alongs Dublin
Boulevard.
Intersection of Village Parkway and Lewis Avenue
Village Parkway is a four-lane roadway with parking allowed on both
sides . At the intersection , traffic volumes are 17 ,300 vehicles per day
on Village Parkway and 2 ,500 vehicles per day on Lewis Avenue. With
these existing volumes., the signal warrants are satisfied . The
signalization requirements are further justified by the heavy U-turn
volumes at the intersection. The average U-turn volumes at noon are 200
vehicles per hour for the northbound approach and 60 vehicles per hour
for the southbound approach. The no stopping zones just downstream of
the intersection approaches on Village Parkway should be lengthened to
50 feet , in order to better accommodate the U-turn movements.
-2- December 7, 1983
Recommendations
Generally speaking , existing traffic conditions now warrant traffic
signals at both locations. However, the warrants are only marginally
met which means that on a priority basis , these locations are less
urgent to signalize than other intersections in the City. Also, both
signals serve the same residential area , possibly indicating that only
one of the signals would be needed to serve the residential area. On
the other hand , both signals would serve business-related traffic at the
respective intersections .
Since both signals would improve intersection operation at the expense
of through traffic, the trade-offs involved should be carefully
considered.
It is my recommendation that signals be planned for both locations and
that they be included in the next update of the Capital Improvement
Program for specific scheduling.
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