考虑通行方向利用率的交叉口感应式控制  

Research on actuated control of intersection consideringutilization rate of traffic direction

作　　者：卢毅[1] 李媛 夏哲 LU Yi;LI Yuan;XIA Zhe(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,长沙410114

出　　处：《重庆理工大学学报（自然科学）》2024年第1期50-58,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：湖南省道路货运物流行业数字化转型研究项目(202231)。

摘　　要：为缓解城市出行延误中交叉口延误占比较大的问题,提高交叉口的通行效率,以标准的四相位交叉口为研究对象,提出了基于交叉口实时路况信息的感应式通行方向利用率信号控制方法。根据车辆空间占用率、交叉口通行效率、车头间距阈值于Python中建立了交叉口相位决策优化模型。以长沙市某交通需求变化大的交叉口为例,通过Vissim 8.0建模,将感应式控制方法与传统的基于车流量的Webster控制方法在多种交通需求下进行仿真对比。结果表明:交叉口平均车辆延误在平峰、PHF15、拥堵交通需求下降低了3.21%、13.1%、4.17%;交叉口的车均延误降低率随着交通需求的增大呈先增后降的趋势。研究成果证实了感应式控制能适应较为广泛的交通环境,能有效降低交叉口车辆延误。The intersection delay accounts for a large proportion in the urban travel delays.To improve the traffic efficiency at intersections,this paper takes the standard four-phase intersection as the research object and proposes an actuated traffic direction utilization signal control method based on the real-time road condition information at intersections.According to the vehicle space occupancy rate,the traffic efficiency at intersections,and the threshold of the head-to-head distance,an optimized model of the intersection phase decision-making is built in python.An intersection with wild fluctuations in traffic flow in Changsha is taken as an example.Through vissim 8.0 modeling,the actuated control method and the traditional webster control method based on traffic flow are simulated and compared under various traffic flows.Our research results show the average vehicle delay at the intersection decreases by 3.21%,13.1%,and 4.17%at off-peak,PHF15,and congested traffic periods;the reduction rate of the average vehicle delays at the intersection will increase first and then decrease with the continuously growing traffic.Our research results confirm the actuated control readily adapts to a wide range of traffic conditions and effectively reduces vehicle delays at intersections.

关 键 词：交通工程 通行方向利用率 感应式控制 车头间距 车均延误 

分 类 号：U491[交通运输工程—交通运输规划与管理]