HomeMy WebLinkAbout13 - Tustin Avenue Speed Limit - PowerPoint- StaffAgenda Item No. 13
February 11, 2014
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TUSTIN AVENUE SPEED LIMIT
SANTIAGO DRIVE TO 23RD STREET
City Council Meeting
February 11, 2014
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To Begin With - Some Background On Speed Limits
3 Ways to Apply and Enforce Speed Limits per California Vehicle Code
• The Basic Speed Law:
"No Person shall drive a vehicle at a speed greater than is reasonable or prudent
and in no event at a speed which endangers the safety of persons or property."
This is founded on the belief that most motorists will, on their own, adjust and
modify their driving behavior properly based upon the conditions around them.
• All Speed Limits are "Prima Facie" ( "at first look ")
• Established Speed Limits which are considered by law to be the safe and
prudent speed under normal conditions.
• Certain Prima Facie speed limits are established by law including a 25 mph
speed limit for Residential Districts and streets that are adjacent to Schools,
and Senior Centers.
Some Background On Speed Limits
• Speed Zoning (Posted Speed Limits)
Establishing the legal speed limit on a roadway in full compliance with state laws
using prevailing speed data, collected as part of an Engineering and Traffic
Survey (ET & S). The measured 85th percentile speed most nearly conforms to a
safe and reasonable speed limit.
• Note of Caution
"Speed Trap" = Per the Vehicle Code, a section of a highway where the posted
speed is not justified by an engineering and traffic survey, and is set artificially
low.
Why Are Realistic Speed Limits Desirable ?
• They satisfy the requirements of State Law for establishing legally enforceable
speed limits on public streets and highways.
• They invite public compliance because they conform to the behavior of the
majority of drivers (Basic Speed Law) and give a clear reminder to
nonconforming violators.
• They provide law enforcement agencies with an effective tool to separate the
occasional violator from the safe and reasonable driving majority.
• They inject an element of logic and reason into an otherwise arbitrary and
often emotional issue.
Roadway Functional Classification
California Road System (CRS) Maps: indicate the functional classification of
a Roadway which is used in determining Federal funding to maintain the
roads. Roads are classified as Interstate, Freeway, Arterial, Collector and
Loca 1.
Currently, Tustin Avenue is functionally classified as a "Collector', not a
"Local" road on the CRS map.
Definition of "Collector" Roadway per Federal Highway Administration:
A collector distributes and channels trips between local roads (in this case,
cul -de -sacs) and arterials (Irvine Avenue).
California Road System (CRS) Map
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FUNCTIONAL CLASSIFICATION SYSTEM
INTERSTATE 1
OTHER FWY OR EXPWY
2
OTHER PRINCIPAL ARTERIAL
3
MINOR ARTERIAL
4
MAJOR COLLECTOR
5
MINOR COLLECTOR
6
LOCAL
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Tustin Avenue
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(looking South towards Santiago Drive)
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Tustin Avenue — Between Santiago Drive and 23rd Street
• This segment of Tustin is a quarter mile long with Stop signs at both ends.
• There are 12 homes that front Tustin Avenue.
• There are 73 homes that access Tustin Avenue off the adjacent cul -de -sacs of
Meadow Lane, Vista Baya, Sierra Vista and Vista Marina.
• This segment meets the FHWA definition of "Collector ".
• This segment does not meet legal Vehicle Code definition of "Residence District ".
"Collector" (per FHWA): Describes a road that "distributes and channels trips between
local roads (in this case, the cul -de -sacs) and arterials (Irvine Avenue)."
"Residence District" (per sec 515 CVC): that portion of a highway upon both sides,
within a quarter mile, the contiguous property fronting thereon is occupied by 16 or
more separate dwelling houses.
Tustin Avenue Neighborhood
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So why did the City post Tustin at 30 mph rather than 25 mph?
• This
segment
of Tustin is not within a School or Senior Center Zone,
and does
not
meet the
definition of a "Residence District ". Based on this a "prima
facie"
25 mph posting would not be legally enforceable.
• Engineering and Traffic Survey shows that the current 85th percentile speed is
36 mph. The speed shall be established within 5 mph of the 85th percentile
speed (35 mph) per Caltrans Policy Directive.
• City used "conditions not readily apparent" to lower the legally enforceable
speed posting to 30 mph.
• This Speed Limit was posted to allow for legal enforcement
(established per the Caltrans Policy Directive, the Manual on Uniform Traffic
Control Devices, and the California Vehicle Code).
• There is No History of Speed Related Accidents.
41 The 30 mph Speed is considered Reasonable and Safe.
What if City Council wanted to
post Tustin at 25 mph
rather
then
30 mph
A. Request to Change Roadway
Classification. The process
to do
this is:
1) Submit a standard form to Caltrans, a marked -up map, a Resolution of
the City Council, and a concurrence letter from OCTA or SCAG;
2) Caltrans District Coordinator reviews and if agrees, writes a District
Concurrence Letter;
3) Caltrans Headquarters presents the proposed changes to the Federal
Highway Administration (FHWA) for approval;
4) If approved by the FHWA, the revised state roadway system maps are
posted on the internet and the Caltrans District Coordinator is notified.
Note: Per CVC, a "speed trap" designation does not apply to a street functionally
classified as "local" on the California Road System Maps. A re- classification to "local"
on the CRS Maps would allow for 25 mph speed limit and legal enforcement.
Point to Consider:
Will most likely require Continual Enforcement to Meet Expectations.
What if City Council wanted to post Tustin at 25 mph rather then 30 mph
B. Change the Physical Nature of the Street — Traffic Calming
City Council Policy L -26: Neighborhood Traffic Management
• This Policy was established to address traffic concerns on residential street
with demonstrated speeding concerns.
• Streets are considered for traffic calming based on measured speeds,
posted speed limit, traffic volumes, roadway width, roadway grade, Fire and
Police Department Emergency Response Requirements, etc.
• Currently at a posted speed limit of 30 mph, Tustin Avenue would not be
eligible per Council Policy L -26. With a posted speed limit of 25 mph,
Tustin Avenue could be considered for traffic calming.
Points to Consider:
• Records do not support that there is a significant traffic issue.
• Depending on Scope, Calming Improvements could cost from $10,000 for
speed humps to $ 75,000 or more for extensive landscaped chokers or
medians.
• Would adding Street Trees & Sidewalks better Address Pedestrian Safety
Concerns?
Other Cities Referenced
Truckee, CA
Changed classification on town maintained streets to "local" to
address enforcement problems. Local courts were dismissing
numerous citations based on Judge's interpretation of
"conditions not readily apparent" used by City to reduce speeds
an additional 5 mph. Re- classification to "local" allowed for legal
enforcement of lower speed limits without requiring the city to
support "conditions not readily apparent" used. Not all streets
in town were posted at 25 mph. City established a policy that
speed limits will not be established more than 10 mph above or
below 851h percentile.
For comparison purposes, we have already used the "conditions"
clause to reduce Tustin Avenue from 35 mph to 30 mph.
Other Cities Referenced
Fullerton, CA
Changed classification on 36 streets from "collector" to "local"
to make the citywide speed survey more manageable in size
and easier to administer. Eliminated the need to complete
Engineering and Traffic Surveys (ET & S) on these streets.
Costa Mesa, CA
Has re- classified some streets from "arterial" to "collector ",
but has not taken any streets off the CRS Maps by changing
classification from "collector" to "local ". Some streets in
Eastside Costa Mesa are actually designated "arterial" with
posted 25 mph speed limit because they meet the definition
of "residence district ".
Staff Recommendation
• Given the current conditions and history, staff believes that Tustin
Avenue between Santiago Drive and 23rd Street is properly
classified as a "Collector Roadway ", and the legally established and
posted speed limit of 30 mph is safe and reasonable.
• A Re- classification of Tustin Avenue to "Local" and a subsequent
posting of 25 mph would most likely require continual enforcement
and /or the implementation of a physical change to the roadway to
gain compliance.
• Staff's Professional Opinion would be to Recommend No Change to
the Classification or Posted Speed Limit at this time. Consideration
could be given to incorporation of Sidewalks and Street Trees on
Tustin Ave. to Address Pedestrian Safety Concerns.
Questions or Comments.
Public Works Department
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