基于通行能力的借对向车道左转交叉口信号控制模型优化  

Optimization of Signal Control Model for Contraflow Left-turn Intersection Based on Capacity

作　　者：童蔚苹[1] 袁诗琳 刘菲菲[3] 徐志红 王健 TONG Wei-ping;YUAN Shi-lin;LIU Fei-fei;XU Zhi-hong;WANG Jian(School of Transportation,Southeast University,Nanjing Jiangsu 211189,China;Traffic Police Division of Ningbo Municipal Public Security Bureau,Ningbo Zhejiang 315000,China;Harbin University of Science and Technology,Harbin Heilongjiang 150080,China;CCDI(Suzhou)Exploration&Design Consultant Co.,Ltd.,Suzhou Jiangsu 215000,China)

机构地区：[1]东南大学交通学院,江苏南京211189 [2]宁波市公安局交通警察局,浙江宁波315000 [3]哈尔滨理工大学,黑龙江哈尔滨150080 [4]悉地(苏州)勘察设计顾问有限公司,江苏苏州215000

出　　处：《公路交通科技》2021年第3期87-95,共9页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(71771050);国家优秀青年科学基金项目(71922007);国家重点研发计划项目(2018YFB1600900)。

摘　　要：借道左转是一种在交叉口现有车道设置基本不变的情况下,为了保证更多的左转车辆可以快速通过交叉口而借用对向出口车道进行左转的新型交通组织方式。该交通组识方式适用于当前有专用左转信号相位且左转车流量较大的交叉口。基于苏州市人民路-十梓街交叉口的实际运行困境,在该交叉口进口道进行借对向车道左转的渠化设计和信号控制方案设计,以此来提高交叉口的交通流通行效率。通过分析车流到达情况和车道使用情况,基于传统交叉口通行能力公式,建立借道左转交叉口通行能力模型。接着以左转通行能力最大为目标,以预信号时长、借道左转车道的开口位置为优化变量,建立了交叉口信号控制方案优化模型,并采用迭代算法进行求解。最后通过仿真试验,利用人民路-十梓街交叉口的实际运行数据对所建立的优化控制方案进行验证,证明模型的有效性。结果表明:优化后的借道左转方案可以提高左转机动车通行能力,降低进口道延误,提高交叉口的整体运行效率;对于设置了借道左转车道的两个南北向进口道,左转车道的平均延误分别降低了35%和33%,平均排队长度也有显著下降,且对没有设置借道左转的东西进口道影响较小,说明该借道左转组织方案在左转车流量较大的交叉口适用性良好,具有实践价值和可操作性。Under the condition that the existing lane setting at the intersection is basically unchanged,contraflow lane left-turn is a new type of traffic organization that borrows the opposite exit lane for left-turn to ensure that more left-turning vehicles can quickly pass through the intersection.It is suitable for the intersection with special left-turning signal phase and large left-turning traffic.Based on the actual operation difficulties of the intersection of Renmin Road and Shizi Street in Suzhou,the channelization design and signal control scheme design of contraflow left-turn at the entrance lane of the intersection are carried out to improve the efficiency of traffic flow at the intersection.By analyzing the arrival traffic flow and lane usage,the capacity model of contraflow left-turn intersection is established based on the traditional intersection capacity formula.Then,with the goal of maximum left-turn capacity,taking the pre-signal duration and the contraflow left-turn lane opening position as the optimization variables,the optimization model of intersection signal control scheme is established,and an iterative algorithm is used to solve it.Finally,the actual operating data of the intersection of Renmin Road and Shizi Street are used to verify the established optimization control scheme to prove the effectiveness of the model through simulation experiment.The result shows that(1)the optimized contraflow left-turn scheme can improve the capacity of left-turn vehicles,reduce the delay of the entrance and increase the overall operation efficiency of the intersection;(2)for the 2 north-south entrance lanes with contraflow left-turn lanes,the average delay of left-turn lanes is reduced by 35%and 33%respectively,the average queue length is also significantly reduced,which have little influence on the east-west entrances that do not have contraflow left-turning lane,indicating that this contraflow left-turn organization scheme is well applicable and has practical value and operability for intersections with lar

关 键 词：城市交通 信号控制优化 通行能力模型 借对向车道左转 交叉口设计 VISSIM仿真 

分 类 号：U491.5[交通运输工程—交通运输规划与管理]