基于速度波动区间的双向绿波优化控制方法
Optimization Methods for Bidirectional Green Wave Control Based on Speed Volatility Interval

针对现有干线交通信号绿波控制方法采用平行等宽的绿波带宽，无法考虑相邻交叉口间交通流运行速度波动性的缺陷，引入了基于路段速度波动区间的不等绿波带宽，提出了干线交通双向绿波优化控制方法.该方法在满足非绿波相位交通需求的前提下，以相邻交叉口之间的绿波带宽最大化为优化目标，通过构建带宽最大化模型，调整相邻交叉口之间的相对相位差，并以重叠度检验为约束条件，防止了绿波带断层现象的产生，进而实现了干线道路交通信号的双向绿波控制.以昆山市长江路为例，基于效率层面的评价指标对提出的干线交通双向绿波优化控制方法性能进行评估，结果表明： 该方法较之传统的绿波控制方法在绿波带宽方面增加了11.8%，在交通延误和车辆排队长度方面分别减少了15.34%和10.86%.
： In order to overcome the drawbacks of traditional arterial signal coordination methods that apply parallel and equal green wave bandwidth and ignore the speed volatility of segments between intersections, a non-parallel and unequal green wave band representation is introduced here based on the segment speed volatility intervals. Additionally, a bidirectional green wave optimization control method was proposed. The optimization objective of the proposed method is to maximize the bandwidth of green waves between adjacent intersections so as to satisfy the traffic demands of the non-coordinated signal phases. Moreover, the relative offset between two adjacent intersections can be adjusted by constructing a maximum bandwidth model. An overlap test was used as a constraint condition to prevent the fracture of green waves, which realize the bidirectional green wave control for the arterial traffic signals. Taking Changjiang Road in Kunshan City as an example, Indexes in terms of efficiency were selected to evaluate the performance of the proposed bidirectional green wave optimization control method. Evaluation results show that the proposed method can effectively increase the green wave bandwidth by 11.8% and reduce traffic delays and vehicle queue lengths of the green wave phases by 15.34% and 10.86%, respectively, compared to the traditional green wave control method