SUBJECT: 6TH ST. TRAFFIC STUDY -PACIFIC COAST
HIGHWAY
TO
ARDMORE AVENUE
Recommendation:
That the City Council direct staff as deemed
appropriate.
Background:
On February 10, 1998, the City Council directed staff to
proceed with a traffic study to limit 6th Street traffic in the
block between Ardmore Avenue and Pacific Coast Highway, by
closing 6th Street to westbound traffic west of the commercial
zone. Linscott, Law & Greenspan (LL & G) prepared the
attached traffic study
Analysis:
The study area included 6th Street between Ardmore Avenue
and Pacific Coast Highway and adjacent residential streets (
8th, 6th, 5th and 2nd Streets). The existing and proposed
conditions were examined using the Intersection Capacity
Utilization (ICU) method of analysis and the incremental daily
traffic increase methodology developed by the Los Angeles
Department of Transportation to determine:
- The volume to capacity (v/c) ratio and level of service
(LOS) of 8th, 5th and 2nd Street intersections1
- The percentage of redistribution of traffic expected with
reconfiguration of 6th Street2
Conclusions of Study:
The proposed reconfiguration of 6th Street (closing 6th
Street to west bound traffic west of the commercial zone)
results in the following traffic impacts3:
- 17.9% increase to daily traffic added to 6th St. east of
Ardmore Ave. (1,203 vehicles to 1,418 vehicles) & 13.1%
decrease to daily traffic added to 6th St. west of PCH (1635
vehicles to 1,420 vehicles).
- 8th, 5th and 2nd Streets west of PCH increased traffic
added respectively with 4.4%, 14.9% and 4.3%
- AM/PM peak V/C and LOS not significantly impacted at
signalized 8th, 5th 2nd /PCH intersection
- Ardmore at 6th Street unsignalized intersection is not
significantly impacted.
- Ardmore north of 6th St. and south of 6th Street
increased traffic respectively with 5.0% and 13.6%
- Ardmore north of 2nd St. impacted with 8% traffic volume
increase.
Notes
- Volume capacity (v/c) is the ratio of the volume of
traffic to the capacity of the roadway. Level of Service
(LOS) is the standard used for the amount of traffic delay
over a 24 hour period for an intersection. A % increase in VC
or drop below LOS D Level is generally considered a
significant impact.
- L.A. DOT methodology used to assess the percent of
redistributed traffic expected to increase on surrounding
streets
- Table I - Traffic Study
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