三车道元胞自动机交通流模型研究

在Nagel-Schrekenberg（NS）元胞自动机交通流模型的基础上，提出了一种高速公路三车道元胞自动机交通流模型．该模型中所有的车辆均遵循相同的演化规则，并允许车辆以一定概率换道．根据计算机数值模拟．研究了车辆减速概率、换道概率对车流量、车道利用率影响关系，结果表明，在相同情况下，此模型所得到的基本图显示出交通流量比单车道NS模型大，并且发现减少不必要的车辆换道行为可以使驾驶更安全．这些研究为管理三车道的道路系统提供了一定的参考依据．

Study on a three-lane cellular automata traffic flow model

Based on the Negel_Schrechenberg(NS) model, a three-lane cellular automata(CA) traffic flow model is proposed to describe the highway traffic under the periodic boundary conditions .In this model, all cars obey the same evolution rules and are allowed to change lane with probabilities. Numerical simulations are presented. The impacts of deceleration probability and lane_changing rate on the traffic flow and lane usage are investigated. It shows that the traffic volume is higher than that of the NS model, and that reducing the lane_changing rate is helpful to the safe of drive.And these results provide some (references) for managing the traffic flow of three_lane traffic system.