Evaluating Safety Impacts of Permissive Green Signal Phasing on Observed Conflicts Between Left-Turning Vehicles and Pedestrians
Permissive left-turn signal phasing allows vehicles to make left turns while pedestrians may concurrently receive a “walk” signal on parallel crosswalks. These simultaneous movements create elevated risks for pedestrians, as drivers often focus solely on identifying safe gaps in opposing through traffic. Currently, there are no clear recommendations directing state departments of transportation (DOTs) regarding permissive left turns and pedestrians. As current Nevada Department of Transportation (NDOT) practices lack evidence-based, clear, context-sensitive treatments that can translate into consistent pedestrian safety improvement, an integrated study is essential to mitigate pedestrian safety risks.
Language
- English
Project
- Status: Active
- Funding: $327,150.00
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Contract Numbers:
335-25-803
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Sponsor Organizations:
Nevada Department of Transportation
1263 South Stewart Street
Carson City, NV United States 89712 -
Managing Organizations:
Nevada Department of Transportation
1263 South Stewart Street
Carson City, NV United States 89712 -
Project Managers:
Ison, Mitch
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Performing Organizations:
Michigan State University, East Lansing
Department of Civil & Environmental Engineering
Institute for Community Development
East Lansing, MI United States 48824-1226 -
Principal Investigators:
Dey, Kakan
- Start Date: 20250929
- Expected Completion Date: 20271231
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Left turns; Pedestrian movement; Pedestrian safety; Pedestrian vehicle interface; Vulnerable road users
- Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors;
Filing Info
- Accession Number: 01971456
- Record Type: Research project
- Source Agency: Nevada Department of Transportation
- Contract Numbers: 335-25-803
- Files: RIP, STATEDOT
- Created Date: Nov 17 2025 6:34PM