摘要： 应用元胞自动机模型对较为复杂的五道口交通流进行研究，通过分析道路因素、车辆因素和车辆运行规则建立五道口交通模型。四道口通常分东-西、南-北两个相位即可，五道口需增加一个相位，构成三相位控制。每一相分为6个车道，对车道进行编号以确定车辆具体位置；所有车辆均按一定系数转化成小型车以简化仿真模型，各相位上的车分为绿灯和红灯两种时步分析。仿真设计平台采用VC++，使用3个定时器产生五道口交通模型的动态画面。所建模型可对流量和配时参数进行动态设置，模拟复杂的实际交通流，具有良好的可重复性。

关键词: 交通流, 仿真模型, 元胞自动机, 五道口

Abstract: Cellular automaton model is applied to analyse the traffic flow of five crossings. This paper establishes traffic model of five crossings by analysing road factor, vehicle factor and the moving rules. Four crossings is usually divided into two phases: east-west phase and south-north phase. But it needs another phase to compose three-phases’ control in five crossings. Every phase is separated into six driveways which are numbered to ascertain the vehicles’ positions; all of the vehicles are transformed to subminiature ones; any vehicle in each phase should be analysed according to the color of light which contains two states: green and red. VC++ is chosen to be the emulational tool, three timers are used to produce dynamic menu of five crossings. The model can set the parameters of flux and travel time during the emulation to simulate the actual traffic flow. So the emulation can be well repeated.

Key words: Traffic flow, Emulational model, Cellular automaton, Five crossings

中图分类号: 

• U491.112