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原文传递 Development of Left-Turn Operation Guidelines at Signalized Intersections.

题名：	Development of Left-Turn Operation Guidelines at Signalized Intersections.
作者：	L. Yu; Y. Qui; H. Yu; L. Guo; X. Chen;
关键词：	left-turn lanes,signalized intersections,traffic control,unsignalized intersections;traffic flow, traffic accidents, traffic volume, traffic safety, traffic simulation, traffic capacity, motor vehicles, guidelines;
摘要：	This project developed guidelines for recommending the most appropriate left-turn phasing treaments at signalized intersections. It investigated all aspects of left-turn operations, including the mode of left-turn signal control, the sequence of left-trun phasing, and left-turn signal displays. Both the operational and safety impacts of different types of left-turn signal operations were analyzed. In the operational impact analysis based on teh results of traffic simulation, cross products of left-turn and opposing through volume (CPOV)-based criteria for selecting the left-turn mode between the protected-only and protected/permissive left-turn modes were developed. In the safety impact analysis, by analyzing the historical accident data collected from more than 100 intersections, the safety performaces of different types of left-turn signals phasing treatments and signal displays were ranked. In addition, this project also evaluated the benefits of regional standardization of left-turn operations. It was found that the mixed application of left-turn signal operations, including signal control modes, phasing sequences, adn displays, increases the risk of accidnts at intersections. / Supplementary Notes: Sponsored by Texas Dept. of Transportation, Austin. Office of Research and Technology Transfer. and Federal Highway Administration, Austin, TX. Texas Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A14 / NTIS In-house Control Codes: dotfha;12091,1101
报告类型：	科技报告