Road Net Traffic Status Analysis under Traffic Accident Based on Improved BML Model

Journal of Transportation Systems Engineering and Information Technology ›› 2010, Vol. 10 ›› Issue (2): 122-129 .

• Systems Engineering Theory and Methods • Previous Articles Next Articles

Road Net Traffic Status Analysis under Traffic Accident Based on Improved BML Model

LIU Xiao-ming¹; LI Ying-hong¹; CHEN Yu-mian²; ZHENG Shu-hui³; LI Zheng-xi¹

1.North China University of Technology, Beijing 100041, China; 2.Liaoning Province Highway Management Department, Shenyang 110003, China; 3.Beijing Information Technology College, Beijing 100080, China

Received:2008-11-25 Revised:2009-02-13 Online:2010-04-25 Published:2010-04-25
Contact: LIU Xiao-ming

基于改进BML模型的交通事故下路网交通运行状态分析

刘小明^*1;李颖宏¹;陈昱靦²;郑淑晖³;李正熙¹

1.北方工业大学，北京 100041； 2.辽宁省高速公路管理局，沈阳 110003； 3.北京信息职业技术学院，北京 100080

通讯作者: 刘小明
作者简介:刘小明（1974-），男，河北滦南人，副研究员，博士

Abstract

Abstract: With the defects of the Biham-Middleton-Levine (BML) model when analyzing the effect from traffic accident in the road network, an improved BML model is proposed. In which, the car driving behavior of changing direction under traffic accident is considered. With this, the car driving rule is more analogous to the actual car action. On the basis of the improved model, the effect of accident amount to average speed is analyzed when the density of traffic flow is given. Then, the effect of traffic flow density to average speed is analyzed when the amount of accident is determined. Furthermore, the effect of the turn probability of car before accident to average speed is estimated. Finally, the relationship between the turn probability distribution function and the average speed of traffic flow is investigated, and some conclusions are drawn with simulation.

Key words: triffic engineering, cellular automation (CA), traffic accident, turning probability, Biham-Middleton-Levine (BML) model

摘要： 针对BML模型在分析交通事故对路网交通运行状态影响方面的不足，考虑事故发生时车辆为回避阻塞点而改变行驶路径等行为，对BML模型中事故点前车辆的行驶规则进行改进，使之与实际车辆的驾驶行为更加接近. 在改进模型的基础上，分别就路网交通流密度一定时，事故点数量变化对交通流平均速度的影响；事故点数量一定时，路网交通流密度变化对交通流平均速度的影响；事故点前各格点车辆转移概率对交通流平均速度的影响；车辆在事故点前各格点的转移概率分布函数不同对系统运行状态的影响等四个问题进行模拟研究，通过对模拟结果进行分析，得出了一系列有意义的结论.

关键词: 交通工程, 元胞自动机, 交通事故, 转移概率, BML模型

CLC Number:

U491

LIU Xiao-ming, LI Ying-hong, CHEN Yu-mian, ZHENG Shu-hui, LI Zheng-xi. Road Net Traffic Status Analysis under Traffic Accident Based on Improved BML Model[J]. Journal of Transportation Systems Engineering and Information Technology, 2010, 10(2): 122-129 .

刘小明,李颖宏,陈昱靦,郑淑晖,李正熙. 基于改进BML模型的交通事故下路网交通运行状态分析[J]. 交通运输系统工程与信息, 2010, 10(2): 122-129 .

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URL: http://www.tseit.org.cn/EN/abstract/abstract17956.shtml

http://www.tseit.org.cn/EN/Y2010/V10/I2/122

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Road Net Traffic Status Analysis under Traffic Accident Based on Improved BML Model

基于改进BML模型的交通事故下路网交通运行状态分析

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