考虑行车延误的干线协调控制信号配时数解算法

Improvement of classical algebraic method of signal timing for arterial road coordinate control considering traffic delay

以绿波带最大化为目标,利用干线协调控制的时空分析图,结合经典算例,从绿信比损失、理想信号间隔取值范围和迭代步长等角度出发,通过设置假想距离在数解法中考虑车辆实际运行中的延误情况,并设计最优理想信号间隔搜索方法,提出了一种新的通过带宽度计算方法。研究结果表明:考虑行车延误的干线协调控制信号配时数解算法,比经典算法求得的通过带宽度更大,计算得到的最佳公共信号周期与通过带宽度也更为准确。

Maximizing the green wave band making use of the time and space diagram for arterial road coordinate control and combining classical algebraic method,this research was designed from the aspects of the loss of green signal ratio,the determination of value range of ideal intersection distance and the selection of optimal intersection distance.Considering the traffic delay of the vehicles during the actual operation based on setting the imaginary distance,the search method of optimal ideal signal interval was designed and the calculation method of green wave bandwidth was proposed.The results effectively demonstrate that the improved classical algebraic method can make arterial road coordinate control system get green wave bandwidth as wide as possible and obtain optimal common signal cycle and green wave bandwidth more practically and accurately.2tabs,10 refs.