Evaluating the Safety Impacts of Flashing Yellow Permissive Left-Turn Indications in Massachusetts
The 2009 Edition of the Manual on Uniform Traffic Control Devices (MUTCD) introduced the Flashing Yellow Arrow (FYA) as a permissive left-turn indication. Massachusetts has since set out to implement this innovative traffic control device at intersections across the Commonwealth. A recent MassDOT retrofit project sought out to convert over 350 traditional steady green ball protected-permissive left-turn (PPLT) traffic signals to FYA protected-permissive operation. With the completion of the retrofit project in sight, this research initiative aims to investigate the safety impact of converting to the permissive left-turn FYA indication.
- Record URL:
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Supplemental Notes:
- Contract to a Performing Organization has not yet been awarded.
Language
- English
Project
- Status: Active
- Funding: $100,000
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Sponsor Organizations:
Massachusetts Department of Transportation
10 Park Plaza
Boston, MA United States 02116 - Start Date: 20191021
- Expected Completion Date: 0
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Evaluation and assessment; Flashing traffic signals; Highway safety; Left turns; Retrofitting; Yellow interval (Traffic signal cycle)
- Geographic Terms: Massachusetts
- Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;
Filing Info
- Accession Number: 01719615
- Record Type: Research project
- Source Agency: Massachusetts Department of Transportation
- Files: RIP, STATEDOT
- Created Date: Oct 21 2019 3:07PM