HomeMy WebLinkAboutResolutions - No. 90-41RESOLUTION NO. 90-41
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A RESOLUTION OF THE LODI CITY COUNCIL
AMENDING TRAFFIC RESOLUTION NO. 87-163 TO APPROVE THE SPEED
ZONE SURVEY ON CHEROKEE LANE BETWEEN KETTLEMAN LANE AND LODI AVENUE
RESOLVED, that the City Council of the City of Lodi does hereby
approve the speed zone survey on Cherokee Lane between Kettleman Lane
and Lodi Avenue, attached hereto as Exhibit A; and
BE IT FURTHER RESOLVED, that City of Lodi Traffic Resolution No.
87-163, Section 7 - Speed Limits - is hereby amended as indicated on
Exhibit A.
Dated: March 21, 1990
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I hereby certify that Resolution No. 90-41 was passed and
adopted by the City Council of the City of Lodi in a regular
meeting held March 21, 1990 by the following vote:
Ayes: Council Members - Hinchman, Olson, Pinkerton, Reid and
Snider (Mayor)
Noes: Council Members - None
Absent: Council Members - None
k��nnifePerrin
Deputy City Clerk
90-41
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BACKGROUND INFORMATION
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AVERAGE DAILY TRAFFIC
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PROPOSED SPEED ZOIIE
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CITY OF L O D I
CHEnOKEE LANE
SPEED
ZONE
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January 1990
SPEED ZOWE REPORT - Cherokee Lane, Kettleman Lane to Lodi Avenue
The text below
describes the State of California Department of
Transportation
(Caltrans) guidelines and
the reasons
in determining the
following speed
zones on Cherokee Lane:
p m n-
Existing
Recommended
Kettleman Lane
to Poplar Street
45 mph
45 mpn
Poplar Street to
Vine Street
35 mph
40 mph
`line Street to
Lodi Avenue
35 mph
35 mph
Prevailina Soeeds
Six radar surveys were performed and the 85 percentile speeds ranged from
37 to 44 mph. Based on the Caltrans Traffic Manual, speed limits should
be established at or near the 85 percentile (critical) speed. Speeds
higher than the 85 percentile are not generally considered reasonable and
safe, and limits below the 85 percentile do not facilitate the orderly
movement of traffic. According to Caltrans guidelines, the speed limit
should be established at the first five mile per hour increment below the
critical speed.
} in reviewing the engineering and traffic survey, the critical speeds are
increasing traveling southbound from Lodi Avenue to Kettleman Lane
(38,40,41) and decreasing going northbound (44,39,37).
As stated above, the only change from the existing speed zone is the short
segment (approximately 1/4 mile) from Poplar Street to Vine Street. it
appears motorists use this area as a transition between the 45 and 35 mph
speed zones. The existing speed zone south of Kettleman Lane is 45 mph
and 35 mph north of Lodi Avenue.
Conditions Not Aooarent to Driver
According to the Caltrans guidelines, only when roadside development
results in traffic confiic.z and unusual conditions which are not readilv
apparent to drivers are speed limits somewhat below the 85 percentile r
warranter.
The following factors were considered: roadway design speed; safe stopping
sight distance; superelevation; shoulder conditions; profile condition;
intersection spacing and or^fsets; commercial driveway characteristics; and
Pedestrian traffic in the roadway without sidewalks.
in reviewing the area From Kettlemar, Lane to Poplar Street, the west side
does not have sidewalk and there is 'pedestrian activity from the auto
dealership. This is not apparent to drivers traveling southbound. Since
here is a landscaped median in this area, the northbound traffic is not
affected.
_SPE_DZr;17 Y ; N . c1L
There are also a nuwDer of commercial driveways on L...;rokee Lane.
Visibility from these driveways is often reduced due to on -street truck
parking. Although this effect was not quantified to further reduce the
recommendec speed limit, it was considered in the overall recommendation.
The guidelines state speed zones of less than half a mile should be
avoided except in transition areas. The recommended 40 mph is
approximately 1/4 mile; however it is a transition area.
Speed zones should be coordinated with changes in roadway conditions or
roadside development. The only distinct roadway condition on Cherokee
Lane from Kettleman lane to Lodi Avenue is the landscaped median which
ends at Poplar Street. However, based on the engineering and traffic
survey, and engineering judgement, Vine Street to Poplar Street was
determined to be the appropriate transition area.
Accidents
Based on the Caltrans Traffic Manual guidelines, the accident records of
the two most recent years should be considered when determining the speed
zones_ Since there are no controls on Cherokee Lane from Kettleman Lane
to Lodi Avenue, one accident rate (5.07 acc/mvm) was calculated. The
recommended speed zones were not reduced due to the accident records.
SPEED .N/TXTW.01L