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基于元胞自动机模型的快速路入口匝道交通流研究

发表时间:2008-01-31  浏览量:1769  下载量:684
全部作者: 慈玉生,裴玉龙,吴丽娜
作者单位: 哈尔滨工业大学交通科学与工程学院,黑龙江工程学院汽车工程系
摘 要: 本文选取一维元胞自动机模型对城市快速路入口匝道连接段交通流进行数值模拟研究,通过设置合理的车道变换规则,研究了交通流量、汇入率等参数对入口匝道连接段交通所产生的影响。研究表明当入流概率不大时,入流车辆对主线车流的影响较小;但当入流概率较大时,主线交通将受到严重干扰,尤其是在主线和匝道的来流车辆均较多时(入流概率大于0.5),匝道来流车辆的频繁变化车道对主线交通会造成很大影响,可能导致主线交通严重不畅。
关 键 词: 公路运输;交通流;元胞自动机;入口匝道连接段;车道变换
Title: Study on traffic flow of on-ramp junction in urban freeway with cellular automaton model
Author: CI Yusheng, PEI Yulong, WU Lina
Organization: School of Traffic Science and Technology, Harbin Institute of Technology;The Department of Automobile, Heilongjiang Institute of Technology
Abstract: Traffic flow characteristics had been studied in urban freeway on-ramp junction section. Numerical simulation was applied to on-ramp junction using one-dimensional cellular automaton (CA) model. Some reasonable lane-changing rules were constructed to analyze the special traffic flow characteristics, including parameters of traffic volume and inflow rate. The results showed that there was a slight disturbance with the inflow to mainline flow at the moment of little probability of the inflow. However, with the inflow probability increasing, mainline flow suffered from a serious disturbance. Especially, traffic jam could be produced when the mainline and on-ramp volumes increasing to a certain level. But for the outflow, the cases are completely different, mainline exit section will be at the phase of saturation when the inflow probability exceeding 0.5. Because much more vehicles from on-ramp will change lanes, the mainline traffic flow will be disturbed seriously. The results can provide some references for managing the on-ramp junction traffic system
Key words: highway transportation; traffic flow; cellular automaton; on-ramp junction; lane-changing
发表期数: 2008年5月第2期
引用格式: 慈玉生,裴玉龙,吴丽娜. 基于元胞自动机模型的快速路入口匝道交通流研究[J]. 中国科技论文在线精品论文,2008,1(2):163-167.
 
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