控制排队长度的高密度路网信号优化模型

Traffic signal control model based on queue management in high-density network

为了提高高密度路网地区的交通管理水平,针对高密度路网特点,提出了一种分布式信号控制模型,用于控制交叉口的排队管理.该模型建立了多目标函数,包括了平均出行延误最小和平均排队占比最小;模型约束包括了排队长度估计、信号控制参数约束.此外,为了避免排队回流现象的产生,还建立了具有高优先级的排队回流约束.仿真结果表明,该模型提高了高密度路网地区的交通通行效率,并有效避免交叉口排队回流现象.

To improve the traffic management in a high-density network,we propose a distributed traffic signal control model to manage the queues in the intersections,based on the characteristics of high-density network.This model min-imizes the average travel delay and the average queue ratio under the constraints on the queue dissipation and the signal control parameters.In addition,to avoid queue spillbacks,a high-priority queue spillback constraint is built.Simulation results illustrate the improvement of the traffic travel efficiency in high-density networks,and the effective avoidance of queue spillbacks.