CC 2018-11-27_12a Certification of Five Year Radar Speed Survey_PP PresentationConsideration of Certification of the Five-Year Radar Speed Survey for Selected City Streets
4/9/2019
By: Brian N. Rodriguez
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Summary
Background
Engineering & Traffic Survey (E&TS) Results
Recommendations
Q/A
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Speed survey study efforts 2016/2018
2018 E&TS segments (70)
Requirements for Speed Enforcement
California Vehicle Code (CVC)
Background
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40802. (a) A "speed trap" is either of the following:
(1) A particular section of a highway measured as to distance and
with boundaries marked, designated, or otherwise determined in order
that the speed of a vehicle may be calculated by securing the time it
takes the vehicle to travel the known distance.
(2) A particular section of a highway with a prima facie speed
limit that is provided by this code or by local ordinance under
subparagraph (A) of paragraph (2) of subdivision (a) of Section
22352, or established under Section 22354, 22357, 22358, or 22358.3,
if that prima facie speed limit is not justified by an engineering
and traffic survey conducted within five years prior to the date of
the alleged violation, and enforcement of the speed limit involves
the use of radar or any other electronic device that measures the
speed of moving objects.
What Is A “Speed Trap”
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The use of vehicle speed data as one of the factors evaluated for selecting a suitable
speed limit is based upon the following fundamental concepts deeply rooted in the
United States system of government and law:
Laws cannot be effectively enforced without the consent and voluntary compliance of the public;
Laws are established for the protection of the public and the regulation of the unreasonable behavior of a few individuals;
The normally careful and competent actions of a reasonable person should be considered legal;
Most drivers are reasonable people who will drive carefully at a speed which is suitable for existing conditions.
Establishing Realistic Speed Limits
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An unrealistic speed limit that is “too low” will:
Make the behavior of the majority unlawful;
If enforced - cause antagonism toward enforcement personnel and traffic laws in general;
Create a bad image of the community for visitors and tourists;
Result in speed differentials in the traffic flow.
Impact of Unrealistic Speed Limits
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Requirements
Prevailing speeds as determined by traffic engineering measurements
Accident records
Highway, traffic and roadside conditions not readily apparent to the driver
CVC Section 627- Engineering & Traffic Survey
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Methodology for Performing Surveys
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City of AG Police, Public Works & Engineering, and Pavement Engineering Inc.
70 Separate Roadway Segments
Performed between 2016 and 2018
E&TS results verified current posted speed limit for the majority of the streets (56)
2018 Engineering & Traffic Survey
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2018 Engineering & Traffic Survey
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Recommended for 5 MPH Reduction
Segment 1: Ash St (City Limits to S Elm St)
Segment 9: Corbett Canyon Rd (Huasna Rd to Wildwood Dr)
Segment 24: Fair Oaks Ave (Orchard Ave to Traffic Way)
Segment 28: Farroll Ave (Orcahrd Ave to Traffic Way)
Segment 34: James Way (Rancho Pkwy to Hidden Oak Rd)
Segment 59: The Pike (S Elm St to Gaynfair Tr)
2018 Engineering & Traffic Survey
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Recommended for 5 MPH Increase
Segment 6: Camino Mercado (Via Las Aguilas – Rancho Parkway)
Segment 14: E Cherry Ave (Traffic Way to Pacific Coast Railway Pl)
Segment 47: S Courtland St (E Grand Ave to Blueberry Ave)
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Justification – 5 MPH Reduction
Segment #7- Corbett Canyon Road – From Printz Road to To City Limits
Current Posted Speed Limit : 45 MPH
85th Percentile Calculation: 50.31 MPH
Recommended Speed Limit: 45 MPH
Justification: 5 MPH reduction applied. Low visibility on horizontal curve. Driveways to residential homes.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #11- E Branch Street – From Garden Street to Paulding Circle
Current Posted Speed Limit : 30 MPH
85th Percentile Calculation: 35.24 MPH
Recommended Speed Limit: 30 MPH
Justification: 5 MPH reduction applied. Neighboring segments are 30 MPH going eastbound and 25 going westbound This will create potential problems for vehicles transitioning from a
higher speed to a lower speed. Vertical curve is present.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #14- E Cherry Avenue – From Traffic Way to Pacific Coast Railway
Current Posted Speed Limit: 25 MPH
85th Percentile Calculation: 35.22 MPH
Recommended Speed Limit: 30 MPH
Justification: 5 MPH reduction applied. Residential on Westbound side. Development on Eastbound side. Recommend monitoring “ROAD WORK” traffic control during construction. Once development
is completed an E&TS is recommended to reflect change in travel patterns/behavior.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #17- E Grand Avenue - From Brisco Road to Alder Street
Current Posted Speed Limit: 35 MPH
85th Percentile Calculation: 39.88 MPH
Recommended Speed Limit: 35 MPH
Justification: 5 MPH reduction applied. The adjacent segments shows travel behavior at 35 MPH, for consistency in travel flow it is recommended to maintain the same speed limit through
this corridor.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #27 Farroll Avenue - From S Elm Street to Victorian Court
Current Posted Speed Limit: 30 MPH
85th Percentile Calculation: 35.06 MPH
Recommended Speed Limit: 30 MPH
Justification: 5 MPH reduction applied. Residential driveways and sight distance due to parked vehicles. This leads to a segment of an existing 25 MPH zone adjacent to this segment.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #33 James Way - From Equestrian Way to Rancho Parkway
Current Posted Speed Limit: 40 MPH
85th Percentile Calculation: 43.84 MPH
Recommended Speed Limit: 40 MPH
Justification: 5 MPH reduction applied. Horizontal and Vertical curves in this area. Will keep traffic consistent with adjacent existing speed limits. Class II Bike lane facility are
present in this segment.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #35 James Way - From Hidden Oak Road to Tally Ho Road
Current Posted Speed Limit: 35 MPH
85th Percentile Calculation: 35.40 MPH (east) 40.79 MPH (west)
Recommended Speed Limit: 35 MPH
Justification: 5 MPH reduction applied. Both directions have parking on both sides. Residential homes with driveways on both sides.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #37 N Courtland Street - From E Grand Avenue to Brighton Street
Current Posted Speed Limit: 25 MPH
85th Percentile Calculation: 30.06 MPH
Recommended Speed Limit: 25 MPH
Justification: A senior apartment complex is located on the west side of the roadway. CVC Section 22352 allows adjustment for roadways adjacent to senior facilities when “SENIOR" warning
signs are in place.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #50 S Elm Street - From Ash Street to Fair Oaks Avenue
Current Posted Speed Limit: 25 MPH
85th Percentile Calculation: 29.87 MPH
Recommended Speed Limit: 25 MPH
Justification: A senior apartment complex is located on the east side of the roadway. CVC Section 22352 allows adjustment for roadways adjacent to senior facilities when “SENIOR" warning
signs are in place.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #62 Traffic Way - From Fair Oaks Avenue to 101 on Ramp
Current Posted Speed Limit: 35 MPH
85th Percentile Calculation: 40.88 MPH (North) 32.07 (South)
Recommended Speed Limit: 35 MPH
Justification: 5 MPH reduction applied. Development on north side. Recommend monitoring “ROAD WORK” traffic control during construction. A traffic signal is proposed at the intersection
of Fair Oaks Ave after E Cherry Development. Once development is completed an E&TS is recommended to reflect change in travel patterns/behavior.
2018 Engineering & Traffic Survey
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Justification – 5 MPH Reduction
Segment #64 Valley Road - From Sunrise Terrace to Tiger Tail Drive
Current Posted Speed Limit: 40 MPH
85th Percentile Calculation: 43.3 MPH
Recommended Speed Limit: 40 MPH
Justification: 5 MPH reduction applied. Sunrise Terrace, Tiger Tail Drive, and Leanna Drive intersections. Intersection at Leanna Drive has a steep cross slope
2018 Engineering & Traffic Survey
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Questions/Answers
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