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1 RiversideCA.gov1
RiversideCA.gov
City Council May 7, 2024Neighborhood Traffic Management Program – Proposed RevisionsPublic Works Department RiversideCA.gov2
BACKGROUNDISSUE1. Numerous requests for speed humps are received each year (nearly 100 requests in 2019 and over 120 requests in 2021 & 2022).2. The Public Works Department was asked to re-examine its practice and consider reinstatement of speed humps.
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2 RiversideCA.gov3
BACKGROUNDBACKGROUND1. Neighborhood Traffic Management Program(NTMP) includes the traffic calming tools for various road types.2. Last new speed humps installed in 2011.
3. In 2014, use of speed humps were discontinued. 4. Proposed temporary speed humps not approved in 2022 with City Council recommendation to M&I.
RiversideCA.gov4
BACKGROUNDMOBILITY & INFRASTRUCTURE COMMITTEE RECOMMENDATIONMobility and Infrastructure Committee (August 2023): 1. Voted unanimously to recommend the proposed revisions to the NTMP; and2. Consideration of use of grantfunds for art crosswalks & pavement mural projects(subsequent agenda report).
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3 RiversideCA.gov5
BACKGROUNDDISADVANTAGES OF SPEED HUMPS1. Disadvantages of speed humps include: –Capital cost (minimum estimated $16,000 to $32,000 per street for 2 to 4 humps);–Tendency to speed in between humps;–Noise from braking –Potential delays to emergencyvehicle response times–Diversion of traffic RiversideCA.gov6
BACKGROUNDCONSIDERATION OF REINSTATEMENT1. Capital installation cost considerations: -120 average annual requests - if only ¼ (30 streets) built - based on 2 to 4 humps per street - annual costs $480,000 to $960,000 - not including maintenance; and2. Unintended consequences:- shift traffic & speeding to parallel streets - ongoing demand for speed humps
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4 RiversideCA.gov7
BACKGROUNDPREVIOUS SPEED HUMP QUALIFYING CRITERIAPrior criteria for the installation of speed humps include: 1. Roadway Characteristics: 25 MPH local streets, two travel lanes, & vertical grade less than 8%;2. Traffic Conditions: Minimum 24-hr traffic volumes of 500 and less than 2,000, with at least 30% of total traffic traveling at 31 MPH or greater; and3. Petition Requirements: Minimum of 70% of owners or residents in project area and 100% within 100 feet of proposed speed hump locations must sign in support.
RiversideCA.gov8
BACKGROUNDHISTORIC SPEED HUMP INSTALLATION TOTALSHistoric data show several peak years where high numbers of speed humps were installed under previous qualifying criteria.
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5 RiversideCA.gov9
BACKGROUNDCURRENT NTMP : LOCAL STREET INITIAL OPTIONSInitial local street mitigation measure options:1. Speed limit sign installation; 2. Spot Police enforcement;3. Radar speed feedback trailer deployment; and/or4. Changeable message board display.
RiversideCA.gov10
BACKGROUNDCURRENT NTMP : LOCAL STREET SECONDARY OPTIONSLocal street secondary mitigation options:1. Striping / Street Narrowing (centerline, RPM’s, parking lane, edgeline);2. Stop signs; 3. Curve warning or Chevron signs;4. Speed feedback signs (primarily grant funded); and/or 5. Turn or truck prohibition signs.
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6 RiversideCA.gov11
BACKGROUNDOTHER EXISTING ALTERNATIVES: MAJOR IMPROVEMENTSAlternate measures (based on funding availability and if deemed appropriate:1. Flashing LED Stop signs; 2. Flashing LED edge-lit Chevron signs;3. Speed limit pavement legend; and4. Neighborhood traffic circles.
RiversideCA.gov12
BACKGROUNDPROPOSED SPEED HUMP QUALIFYING CRITERIAProposed speed hump qualifying criteria includes: 1. Roadway Characteristics: 25 MPH local streets with two travel lanes and a grade of less than 8% (unchanged);2. Traffic Conditions: 24-hr. traffic volumes of at least 750 and less than 2,000 vehicles with a combined 85th% speed of 37 MPH or greater (changed); and3. Petition: Signed showing support by a minimum of 70% of owners or residents within project area (changed). 4/25/2024
7 RiversideCA.gov13
BACKGROUNDPROPOSED SPEED HUMP QUALIFYING CRITERIA
RiversideCA.gov14
BACKGROUNDSPEED HUMP INSTALLATION OPTIONS1. Installation by Streets Division with estimated costs at $8,000 per speed hump (up to 100K maximum for initial rollout); 2. Scheduling installation with future (CIP) repaving projects:a. Defer installation costs until repaving is scheduledb. Results in cost savings due to larger quantities3. Pursue grant funds
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8 RiversideCA.gov15
Strategic Priority 2 – Community Well-BeingGoal 2.4–Support programs and innovations that enhancecommunity safety, encourage neighborhood engagement, andbuild public trustCross-Cutting ThreadsSTRATEGIC PLAN ALIGNMENT
STRATEGIC PLAN ALIGNMENT
RiversideCA.gov16
BACKGROUNDRECOMMENDATIONSThat the City Council approve the proposed revisions to the NTMP including: 1. Approve the proposed revisions to the Neighborhood Traffic Management Program (NTMP) to reinstate the use of speed humps as a local street secondary mitigation measure option with modifications to the “Traffic Conditions” qualifying criteria; and 2. Authorize the Chief Financial Officer, or designee, to transfer $100,000 in Measure A funds from the Arterial Interconnections Project to the Speed Hump Traffic Calming Project account.