考虑车队离散的路段行人过街最大压信号控制方法研究  

A Max Pressure Signal Control Method of Pedestrian Crossing Considering Platoon Dispersion

作　　者：李冰[1,2] 冯悦 殷炬元 李施维 高健东 覃文文 LI Bing;FENG Yue;YIN Juyuan;LI Shiwei;GAO Jiandong;QIN Wenwen(Faculty of Transportation Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Provincial Intelligent Transport Systems Center of Engineering and Technology,Kunming 650500,China;Faculty of Automobile Engineering,Nantong Institute of Technology,Nantong 226000,Jiangsu,China)

机构地区：[1]昆明理工大学交通工程学院,云南昆明650500 [2]云南省智能交通系统工程技术研究中心,云南昆明650500 [3]南通理工学院汽车工程学院,江苏南通226000

出　　处：《昆明理工大学学报（自然科学版）》2024年第3期287-297,共11页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(52002161);云南省基础研究计划项目(202101AU070026);云南省基础研究计划项目(202401AT070414).

摘　　要：针对路段行人过街车辆与行人之间的冲突问题,在保证行人过街交通安全的前提下,为提升路段交通运行效率,建立了一种路段行人过街信号控制方法.首先,基于路段车辆速度特性与Robertson车队离散模型实现对上游路段的区域划分和区域交通密度预测;然后,基于最大压(Max Pressure,MP)信号控制最大化交通量输出的同时有效防止排队溢出的优势,建立了基于分段密度的最大压信号控制模型,并以抑制下游排队长度和车辆与行人综合平均延误最小为优化目标确定最佳配时方案.模型验证结果表明:在不同交通状态下,分段密度最大压信号控制模型能够防止排队溢出、减少车辆和行人的综合平均延误.在过饱和交通状态下,分段密度最大压与密度最大压相比减少了9.56%的车辆与行人综合平均延误;在近饱和交通状态下,分段密度最大压减少延误的效果与传统自适应控制相当;在未饱和交通状态下,分段密度最大压相比传统自适应控制减少了6.5%的车辆与行人综合平均延误,说明分段密度最大压模型能够有效应用于路段行人过街交通信号控制中,进而提升行人过街路段的交通运行效率.To address the conflict between vehicles and pedestrians at midblock crosswalks,this study introduces a new signal control method for midblock pedestrian crossing to ensure safety while maximizing traffic efficiency.Firstly,based on vehicle speed characteristics and Robertson s platoon dispersion model,the upstream road sections are regionally divided,and the traffic density of each region is predicted.Then,leveraging the advantages of the max pressure(MP)signal control method,which maximizes traffic volume output and effectively prevents queue overflow,a segmented density MP signal control model is developed.The model optimizes signal timing by minimizing the average delay of vehicles and pedestrians and limiting queue length.The model verification results under various traffic states demonstrate that the segmented density MP signal control approach can prevent queue overflow and reduce the average delay of vehicles and pedestrians.In the oversaturated traffic state,the proposed method decreased the average delay by 9.56%compared to the density MP control model.In the near-saturated state,improvements are comparable to traditional adaptive control.In the unsaturated traffic state,the proposed method outperforms traditional adaptive control by 6.5%in delay reduction.The results demonstrate that the segmented density MP model can be efficiently and effectively applied in midblock pedestrian crossing signal control to improve traffic efficiency at midblock crosswalks.

关 键 词：城市交通 信号配时 最大压 车队离散 路段行人过街 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]