局部车道缩减的双车道元胞自动机交通流模型研究  

Two-lane Traffic Flow with Partial Reduction Based on Cellular Automata Model

作　　者：薛飞[1] 钟诚文[1,2] 白存儒[1] 

机构地区：[1]西北工业大学翼型、叶栅空气动力学国防科技重点实验室,西安710072 [2]西北工业大学高性能计算研究与发展中心,西安710072

出　　处：《系统仿真学报》2010年第5期1114-1116,共3页Journal of System Simulation

基　　金：西北工业大学基础研究基金重点项目

摘　　要：针对道路使用过程中可能发生的意外,考虑双车道有一条车道出现局部维护,车辆需要绕行的情况,在一维对称双车道元胞自动机模型的基础上,建立一种有局部车道缩减的双车道元胞自动机模型,结合实际交通情况给出计算机数值仿真的流量-密度图,分析受堵车道上的交通状况,并给出受堵车道的时空斑图。数值仿真结果显示,对于不同的延迟概率,整个路段都有相应的瓶颈流量,对受堵车道上的换道规则的调整有助于增加该车道上的换道车辆数,减少车辆的滞留。Considering the lane＇s partial repairing because of accidents,cars have to round the repairing part to move on.Based on the symmetric traffic cellular automata model,a new one-dimensional cellular automata model of two lanes with partial reduction was simulated.The numerical simulation of flow-density diagram was proposed.And the time-space diagram of the repairing lane was given to analyze.The numerical simulation results show that the flows have their own bottlenecks corresponding to the probabilities of velocity＇s decrease,and adjusting the constraint concerning the safety gap near the entry of reduction part can help increase the number of vehicles changing from the repairing lane towards the normal one.

关 键 词：元胞自动机 交通流 双车道 局部车道缩减 数值仿真 

分 类 号：U491.12[交通运输工程—交通运输规划与管理]