无信号交叉口直行电动自行车合流区避让模型研究  

Research on Avoidance Model of Straight-running Electric Bicycle Confluence Zone at the Unsignalized Intersection

作　　者：韦凌翔[1] 郭延永[2,3] 张俊杰 程陆 庄帅 张成浩 WEI Lingxiang;GUO Yanyong;ZHANG Junjie;CHENG Lu;ZHUANG Shuai;ZHANG Chenghao(School of Material Science and Engineering,Yaneheng Institute of Technology,Yaneheng Jiangsu 224051,China;School of Transportation,Southeast University,Nanjing 21009,China;Department of Civil Engineering,Faculty of Applied Science,University of British Columbia,Vancouver,BC,V6T1Z4,Canada)

机构地区：[1]盐城工学院材料科学与工程学院,江苏盐城224051 [2]东南大学交通学院,江苏南京21009 [3]英属哥伦比亚大学应用科学学院土木工程系

出　　处：《盐城工学院学报（自然科学版）》2018年第3期48-52,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(71701046);江苏高校品牌专业建设工程资助项目(PPZY2015A025)

摘　　要：无信号交叉口电动自行车合流区违规行为是交叉口电动自行车交通事故的关键成因之一。为减少无信号交叉口电动自行车交通事故,构建了基于元胞自动机的无信号交叉口电动自行车合流区避让模型,并借助MATLAB软件,采用固定变量法仿真研究合流区车辆避让比例对直行电动自行车交通流的影响。仿真结果表明:当直行电动自行车车流的平均密度小于0.23辆/m^2时,其速度变化平缓,此时如果左转电动自行车比例增多,则其速度降低明显;当直行电动自行车车流平均密度大于0.23辆/m^2时,直行电动自行车间可利用间隙和自由行驶的空间越来越小,导致其跟随、加减速等情况越来越多,运行速度逐渐减小。The illegal behavior of the electric bicycle confluence zone at the unsignalized intersection is one of the key causes of the electric bicycle traffic accident at the intersection. In order to reduce the traffic accidents of electric bicycle at the unsignalized intersection, a cellular automaton based avoidance model of the electric bicycle confluenee zone at the unsignalized intersection is constructed. With the acid of MATLAB software, the fixed variable method is used to simulate the impact of confluenee zone avoidance ratio on the straight-running electric bicycle traffic flow. The simulation results show that when the average density of the straight-running electric bicycle flow is less than 0.23 vehicles per square meter, its speed changes gently. At this time, if the proportion of left-turn electric bicycles increases, the speed will decrease significantly. When the average density of the straight-running electric bicycle flow is more than 0.23 vehicles per square meter, the space that can be used for clearance and free driving among the straight - running electric bicycles is getting smaller and smaller. It leads to more and more cases of following, acceleration and deceleration, and the running speed is decreasing gradually.

关 键 词：交通安全 无信号交叉口 电动自行车 元胞自动机 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]