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在信号控制交叉口交通流线部分非饱和且车流到达波动较大情况下,定时或定相位感应控制不能最大化利用相位的绿灯时间.为实现信号控制与交通流线到达的波动性相适应,尽量减少周期绿灯损失,提高交叉口通行能力,提出交叉口流线动态组合控制.由流线的交通特性以及逻辑函数确定交叉口可行控制相位组合,通过交叉口交通流线实时消散模型确定流线逻辑值,依据逻辑值的大小以及交叉口控制相位绿灯损失最少的逻辑组合原则,实现交叉口流线实时消散的动态逻辑组合控制.通过实例计算分析可知,随着交叉口流线车辆到达随时间显著性变化,流线动态逻辑组合控制比定周期或定相位的感应控制方式延误更小,控制方案更灵活,与交通流协调性更好,可提高交叉口时空资源利用效率.
When the traffic flow is not saturated and the traffic arrivals fluctuate widely at the signalized intersection, the timing or phase sensitive control can not maximize the green time of the phase. To adapt the signal control to the fluctuation of the traffic flow, The green traffic light loss is reduced as much as possible to improve the traffic capacity of the intersection and the dynamic combined control of the traffic flow at the intersection is proposed.The traffic controllable combination of phases is determined by the traffic characteristics of the traffic flow and the logic function, Logical value, according to the logical value of the size and the intersection of cross-control phase loss of green light minimum principle of logic combination to achieve real-time dynamic intersection control streamline logic combination control.Examples by the analysis shows that with the intersection of streamlined vehicles arrive with time Significant changes, streamline dynamic logic combination control than the fixed cycle or phase induction control delay less, the control scheme is more flexible, and traffic flow better coordination, can improve the utilization efficiency of space-time resources.