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考虑可变加速模式的交通流元胞自动机模型

发表时间:2016-10-31  浏览量:1224  下载量:313
全部作者: 丁建勋,郑杨边牧
作者单位: 合肥工业大学汽车与交通工程学院
摘 要: 现有的大多数元胞自动机(cellular automaton,CA)模型都假设司机采取谨慎型逐步加速行为,没有考虑加速度的产生与车辆当前速度之间的内在联系。本研究在NS模型的基础上,融入了一种可变的加速模式,并且修正了慢化行为发生时只能减速一个单位元胞的常规设定,从而得到一个改进的交通流CA模型。数值实验表明,该模型可以很好地描述司机可变加速对交通流的影响,相同慢化概率水平下静止车辆与运动车辆慢化发生时不同减速幅度的引入,可以刻画交通流中亚稳态和回滞等复杂现象。
关 键 词: 交通运输系统工程;交通流;元胞自动机模型;可变加速模式
Title: A cellular automaton model of traffic considering the variable acceleration mode
Author: DING Jianxun, ZHENG Yangbianmu
Organization: School of Automotive and Transportation Engineering, Hefei University of Technology
Abstract: Most of cellular automaton (CA) models of traffic have taken the relationship between the acceleration and the specific value of current velocity into account. On the base of Nagel-Schrechenberg (NS) model, this paper presents a modified CA model in which the variable acceleration mode and the slowdown in the rate from the randomization behavior were investigated. Numerical simulation results show that the proposed model can reveal the influence of driver’s variable acceleration mode on traffic and generate metastable states or hysteresis in traffic flow under the same level of randomization probability and different rates from the slowdown behaviors.
Key words: transportation systems engineering; traffic flow; cellular automaton model; variable acceleration mode
发表期数: 2016年10月第20期
引用格式: 丁建勋,郑杨边牧. 考虑可变加速模式的交通流元胞自动机模型[J]. 中国科技论文在线精品论文,2016,9(20):2106-2112.
 
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