基于驾驶人行为选择的交叉口混合交通流建模与分析

Modeling and Analysis of Mixed Traffic Flow Based on Driver's Behavior Choiceat Intersection

针对信号交叉口混合交通流机动车和非机动车冲突问题,采用元胞自动机模型建立交叉口处混合交通流模型。该模型将驾驶人行为选择引入演化规则,包括决策点规则和启动点规则。利用Matlab软件进行仿真,结果表明:首先,模型能够描述右转机动车和直行非机动车交通冲突的相互关系;其次,当非机动车到达率增加时,机动车饱和流量和临界到达率分别下降的百分比为80%和12%;最后,改变决策点和启动点驾驶行为概率对改变机动车流量效果明显。

In order to study the interference between non-motors and vehicles in an intersection, this paper examines drivingbehaviors, which are mainly divided into decision point rule and the launching point rule, to build a coupling model for non-motors and vehicles. This coupling model is completed by cellular automaton models and validated by computer simulation.The simulation results show that this model can describe the relationship of traffic conflict between right-turning vehicles anddirect-moving non-motors. We further demonstrate that the percentage of vehicle saturation flow and critical arrival rate decreased by 80% and 12%, as the increase of the non-motors flow. Finally, the results prove that the probability of driving behaviors at the decision point and launching point is obviously effective in the flow of vehicles.