个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:Director of International Office Dean of School of Transportation and Logistics
其他任职:交通运输学院名誉院长
性别:男
毕业院校:日本东京大学
学位:博士
所在单位:交通运输系
学科:交通运输规划与管理. 交通系统工程. 市政工程. 行政管理
联系方式:0411-84708224
电子邮箱:szhao@dlut.edu.cn
Optimizing the Location of U-Turn Median Openings at Signalized Intersections with Multitype Vehicles
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论文类型:期刊论文
发表时间:2019-09-01
发表刊物:JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS
收录刊物:SCIE、EI
卷号:145
期号:9
ISSN号:2473-2907
关键字:Signalized intersections; U-turn median openings; Multitype vehicles; Capacity maximization; Optimal location; Optimization models
摘要:The location of a U-turn median opening has an important effect on traffic flow operations for a shared left-turn and U-turn (SLU) lane with traffic signals. It is the first thing to analyze the influences of the arrival modes of multitype vehicles on the traffic delay for an SLU lane. Two models are then formulated to calculate the loss time for the phase used by the concurrent left-turns and U-turns and that used by the concurrent through and U-turns. To seek the optimal location of a U-turn median opening, a single-objective optimization model is developed on the basis of the SLU lane capacity. Six experiments that consider three levels of traffic demand and whether the U-turning volume has an effect on the green splits and the optimal U-turn location are carried out. The results reveal that the optimal location of a U-turn median opening depends on traffic demand and composition, and such a location will approach the stop line if the arrival rate of multitype vehicles decreases or the proportion of U-turn vehicles increases.