Set methods of left-turn waiting zone at signalized intersection |
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Authors: | DING Wei YANG Xiao-guang and YANG Xiao-long |
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Affiliation: | 1. School of Traffic and Transportation Engineering, Tongji University, Shanghai 200092 ,China;School of Civil Engineering, Xi' an University of Architecture & Technology, Xi' an 710055, China 2. School of Traffic and Transportation Engineering, Tongji University, Shanghai 200092 ,China 3. Xi' an Yanliang National Aviation Hi-tech Industrial Base, Xi' an 710089, China |
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Abstract: | To maximize the number of vehicles passing by the stop-line in a cycle and improve the operation ef-ficiency of intersection in China, the settlement of left-turn lane waiting-zone is becoming prevailing. Based on conflicting-point method, the internal mechanism of left-turn flow after stopping line was analyzed through taking postposition left-turn lane waiting-zone intersection for instance. The relationship between the first left-turn vehi-cle and the last vehicle of previous phase passing the conflicting point was expounded. According to the time of successive arriving of two vehicle flows at conflicting-point, the reasonable layout for waiting area of left-turn ve-hicles was researched when the clearance index was less than O. The results suggest that the appropriate layoutfor waiting area of left-turning vehicles can improve the operation efficiency of intersections. |
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Keywords: | left-turn waiting zone collision point analysis methodology clearance index |
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