data-driven safety planning in nyc.ppt · 2011. 8. 30. · data-driven safety planning in new york...
TRANSCRIPT
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Office of Research, Implementation & SafetyAugust 2011
Data-Driven Safety Planning in New York City
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Goal
2007 NYCDOT Strategic Plan: Reduce Fatalities
50% by 2030
Traffic Fatalities
2007: 274
2009: 258
2030: < 137
NYC Actual & Target Traffic Fatalities 1990-2030
• Acquire Crash Data• Analyze Data
– Develop crash weighting system– Analyze potential projects
• Identify Funding• Implement engineering improvements
– Redesigns • Annual “Street Improvements Projects”• Capital planning
– Upgrades – annual resurfacing process• Evaluate safety projects• Share data & design knowledge 3
Process
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Crash Data Acquisition
Crash Occurs
Police Report(MV104AN)
Precinct
NYPD Highway 3 NYCDOT
< 6 moHard copy
<72 Hours
DMV(3 mo)
NYPD AISDatabase
DMVDatabase
NYSDOTDatabase
ALIS
1 moPDF
Database transferred without MV 104
Driver Report(MV104AN)
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Corridor Ranking/Project Prioritization
1. Crashes assigned weight based on likelihood of medically serious injury (NYSDOH data)
2. Segments given total weights3. Corridors assembled from segments
1. Shared characteristics: roadbeds, operational direction2. Total likely serious injuries per mile calculated.
“Safer” street mileage in borough
Total street mileage in borough X 100 = Corridor Percentile Rank
4. High-Crash Corridors (high-priority corridors):Top-ranked 1/3 of corridors in each borough
• Ranking sheets for projects produced on demand
• List/map of prioritized corridors (pending)
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Corridor Ranking/Project Prioritization
• Construction– STP– Earmarks (“High-Priority Projects”)– CMAQ– CHIPS (New York State)– TCSP (pending)– HSIP (pending)– Enhancements
• Planning & Design– UPWP (through MPO)– CHIPS– City funds
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Funding
• Safety– Monthly-weighted
before-after analysis– Radar speeds
• Operations– LOS– Vehicle travel speeds
• Quality of Life– Local input– Trees added– Other metrics
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FundingProject Evaluation
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Sharing Knowledge
Safety Dashboard Traffic Safety Viewer
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1. High Crash Corridors2. Tame the Two-Ways 3. Pedestrian Countdown Signals4. Slow Speed Zones
1. Reduced School Speed Zones2. Neighborhood Slow Speed Zones
5. Left Turn Daylighting
Safety Project Types
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Design Treatments
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Road Diets
Before
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Road Diets
Before
After
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Road Narrowing
Before
After
Before
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Elimination of Right-Turn Slips
After
Before
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Separated Bike Lanes
Before
After
Before
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Plazas
Before After
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Plazas
Before
After
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Questions?
Matthew Roe
[email protected] http://www.nyc.gov/html/dot/html/about/dotlibrary.shtml#research