Development of guidelines for pedestrian safety treatments at signalized intersections.
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2012-01-01
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Alternative Title:Project title: Development of pedestrian safety-based warrants for protected or protected-permissive left-turn control
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Edition:Technical report; Sept. 2009-Aug. 2011.
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Abstract:For intersections with a permissive or protected-permissive left-turn mode, pedestrians cross during the ; permissive period. This operation requires the left-turn driver to yield to both opposing vehicles and ; pedestrians, prior to accepting a gap and completing the turn. Pedestrian crash risks are increased in these ; complicated driving conditions because left-turn drivers sometimes fail to yield to pedestrians. ; This document summarizes the research conducted and the conclusions reached during the development of ; guidelines for pedestrian safety treatments at signalized intersections. The guidelines are focused on ; treatments that alleviate conflicts between left-turning vehicles and pedestrians. One treatment addressed in ; the document is the use of protected or protected-permissive left-turn operation. The guidelines are based on ; consideration of pedestrian safety and vehicle operation. These considerations include the road-user costs ; associated with pedestrian-vehicle crashes and vehicle delay. The guidelines were incorporated in the Traffic ; Signal Operations Handbook. The guidelines were also incorporated into a spreadsheet that was developed ; to accompany the Handbook. The Handbook was previously developed for Project 0-5629. It provides ; guidelines for timing traffic control signals at intersections that operate in isolation or as part of a ; coordinated signal system.
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Main Document Checksum:urn:sha-512:66beff04414b9e49395230ad690ac0840bc613a5e1b365b35414b3f9a0f4151f2377989b07ee6137819c2d391867d88b20b4e7480e7d5f7e5c94b8d52088094f