交通公平性导向的平面过街横道信号配时设计  

Traffic Equity-oriented Signal Timing Design of Plane Crossings

作　　者：张倍 杨震 邬岚[1] 丁玥青青 ZHANG Bei;YANG Zhen;WU Lan;DING Yue-qing-qing(College of Automobile and Traffic Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学汽车与交通工程学院,江苏南京210037

出　　处：《物流工程与管理》2024年第5期64-70,共7页Logistics Engineering and Management

基　　金：国家自然科学基金(51408314);江苏省自然科学基金资助项目(BK20170932);南京林业大学青年科技创新基金项目(CX2017011)。

摘　　要：为了从交通公平性的角度解决平面过街横道的信号配时问题,避免配时结果偏向于机动车,文中首先通过采集平面过街横道几何参数以及交通流量数据,统计获得第15%位行人过街步速;然后基于双环相位结构,考虑相位绿灯时长、行人过街、信号周期等约束条件,以机动车和行人的平均延误之差和机动车平均延误最小为目标,建立平面过街横道的信号配时多目标优化模型,并设计遗传算法求解该模型;最后将求解得到的各种信号配时方案进行对比分析。结果表明:以机动车延误或总平均延误最小为目标,不能得到合理的信号配时结果;当机动车与行人平均延误之差的权重在0.3~0.9时,可以得到两种合理的信号配时结果。因此,以交通公平性为导向的平面过街横道信号配时方法,兼顾了公平性和高效性,在公平地对待每一个交通参与者的同时,也有效地提高了平面过街横道处的通行效率和质量,有利于更公平地分配交通资源,引导交通资源布局向合理化方向发展。In order to solve the problem of signal timing of plane crossing from the perspective of traffic equity and avoid the result of timing biased to motor vehicles,firstly,this paper collected the geometric parameters of plane crossings and traffic flow data to obtain the crossing speed of the 15%pedestrian.Then,based on the double-loop phase structure,considering the constraints such as phase green time,pedestrian crossing and signal period,a multi-objective optimization model for signal timing of plane crossing was established with the aim of minimizing the difference of average delay between vehicles and pedestrians and the average delay of vehicles,and a genetic algorithm is designed for solution.Finally,various signal timing schemes were compared and analyzed.The results show that it is impossible to obtain reasonable signal timing results by aiming at minimum vehicle delay or total mean delay;when the weight of the difference between the average delay of motor vehicles and pedestrians is 0.3~0.9,two reasonable signal timing results can be obtained.Therefore,the traffic equity-oriented signal timing method for plane crossing takes into account fairness and efficiency.While treating each traffic participant fairly,it also effectively improves the traffic efficiency and quality at plane crossings,which is conducive to more equitable distribution of traffic resources and guiding the distribution of traffic resources to a rational direction.

关 键 词：交通工程 信号配时设计 遗传算法 平面过街横道 交通公平 平均延误 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]