车队密度散布模型及在车队截尾问题上的应用

Diffusion model of density of traffic platoon and signal coordinated control

首先运用流体动力学模拟理论微观地分析了车队在信号灯交叉口的排队队长的变化特性 ;以此为基础 ,研究车队散布中的密度变化规律 ,提出密度散布模型 ,并且将该模型用来推导散布车队尾部在下游信号灯被截车辆数的数学表达式 ,这可用于交叉口信号协调控制。

The evolving property of queuing length of traffic platoon is microcosmicly studied by using simulated dynamic model of traffic flow theory.On the basis,the evolving law of density during the diffusion of traffic platoon at signal-intersection is researched,and the density diffusion model is got.At last,the model is used to infer the expression of the number vehicles on the tail of the traffic platoon jammed before the backward signal intersection,which is useful in the signal coordinated control of neighbor intersections.