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随着交通流仿真的需要及对智能交通系统研究的发展,出现了基于元胞自动机理论的交通流模型。交通流元胞自动机模型由一系列车辆运动应遵守的运动规则和交通规则组成。在论述元胞自动机模型的基础上,提出元胞自动机的单车道智能交通流模型。该模型以Visual Basic(VB)语言为开发工具,考虑面向高速公路的一维交通流运行状况,并根据车辆的运行情况,对车辆的平均速度和延误加以研究,细化格点并进行仿真。仿真的结果表明,车辆平均速度和延迟与它们的基本变化趋势是相似的。仿真结果非常理想,说明了元胞自动机广泛的应用前景。
With the need of traffic flow simulation and the development of intelligent transportation system research, a traffic flow model based on cellular automata theory has emerged. The traffic flow cellular automaton model consists of a series of rules of motion and traffic rules to be followed by the vehicle. Based on the cellular automaton model, a cellular automaton intelligent traffic flow model is proposed. Based on Visual Basic (VB) language, this model considers the traffic flow of one-dimensional traffic flow oriented to expressways and studies the average vehicle speed and delay according to the running conditions of the vehicles. The model is refined and simulated. Simulation results show that the average vehicle speed and delay and their basic trends are similar. The simulation result is very ideal, which shows the wide application prospect of cellular automata.