有轨电车信号优先时长阈值优化模型  

Optimization model signal priority time threshold of tram

作　　者：周洋帆[1,2] 贾顺平[1,2] 陈绍宽[1,2] 韦伟[1,2] ZHOU Yang-fan JIA Shun-ping CHEN Shao-kuan WEI Wei(MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]北京交通大学城市交通复杂系统理论与技术教育部重点实验室,北京100044 [2]北京交通大学交通运输学院,北京100044

出　　处：《交通运输工程学报》2016年第5期151-158,共8页Journal of Traffic and Transportation Engineering

基　　金：国家自然科学基金项目(71390332);国家973计划项目(2012CB725406);中央高校基本科研业务费专项资金项目(2015YJS090)

摘　　要：以车辆延误和交叉口饱和度为约束条件,针对绿灯提前和绿灯延长2种优先策略,建立了求解有轨电车信号优先时长阈值的优化模型,考虑了有轨电车车身长度的影响,通过案例对模型进行验证。分析结果表明：绿灯提前策略下优先时长的阈值为0～13s,绿灯延长策略下优先时长的阈值为5～11s;以出行者作为研究单元时,不同的非优先相位的公交车辆数对应不同的整体效益曲线,而以车辆作为研究单元时,不同的非优先相位的公交车辆数只对应一条整体效益曲线;非优先相位的公交车辆数的临界值为16veh,非优先相位的车辆到达率的临界值为0.115pcu·s^-1,红灯时长的临界值为101s,这些参数超过临界值后,不再适合给有轨电车设置信号优先。本文提出的有轨电车信号优先时长阈值的优化模型为给予有轨电车合理范围内的信号优先提供了依据。Vehicle delay and intersection saturation were taken as constraint conditions, early green and extended green priority strategies were used, and the model of solving signal priority time threshold of tram was built. The influence of tram length was considered, and the model was verified through real case. Analysis result shows that the priority time thresholds under early green strategy are 0-13 s, and the priority time thresholds under extended green strategy are 5-11 s. When travelers are regarded as research units, different bus numbers under non-priority phase correspond to different overall benefit curves. When vehicles are regarded as research units, different bus numbers under non-priority phase correspond to only one overall benefit curve. The critical value of bus number under non-priority phase is 16 veh, the critical value of vehicle arrival rate under non-priority phase is 0. 115 pcu · s^-1 , and critical value of red time is 101 s. When they exceed critical values, it is not suitable to set signal priority for tram. The optimization model of signal priority time threshold of tram in this paper provides basis for giving signal priority of tram within reasonable range. 1 tab, 11 figs, 24 refs.

关 键 词：轨道交通 有轨电车 信号优先 优先策略 优先时长阈值 出行者延误 

分 类 号：U482.1[交通运输工程—载运工具运用工程]