基于交通波理论的干线绿波协调控制方法

A Coordinate Control Method for Arterial Green Wave Traffic Based on Traffic-wave Theory

为实现城市干线绿波交通,提高干线运行效率,考虑交叉口间的关联性,从协同角度对周期、相位相序、绿信比、相位差4种干线控制参数进行了优化。运用交通波理论阐释了干线车流排队现象,揭示了大流量线控系统绿波交通产生的内在机理。以保证下游交叉口无排队车辆为目标,建立了交叉口相位差优化模型。选取青岛市滨海大道13个相邻交叉口为研究对象,通过周期、相位相序、绿信比和相位差的优化方案,验证了干线协调控制优化方法的可行性和所建立模型的实用性。结果表明:周期、相位相序、绿信比和相位差是干线协调控制的重要优化指标;基于交通波的干线交叉口相位差优化模型对总旅行时间、停车次数的优化效果显著。

In order to achieve green wave traffic and improve operational efficiency of arterial road, considering the relevance of intersections, the arterial road control parameters, including cycle, phase sequence, split ratio, and phase difference are optimized from the perspective of coordination. Based on traffic-wave theory, the vehicle queuing of arterial traffic is explained, and the internal mechanism for generating green-wave traffic in a large volume by-wire system is revealed. To guarantee without queuing vehicles on downstream intersection, a phase difference optimization model is established. Selecting 13 adjacent intersections along coastal road in Qingdao City as research object, of the abovementioned 4 control parameters, the feasibility of the arterial by using the optimization scheme coordinated control optimization method and the practicability of the established model are verified. The result indicates that （ 1 ） cycle, phase sequence, split ratio, and phase difference are important optimization indicators for arterial road coordination control ; （ 2 ） the optimization effect of arterial road intersection offset optimization model based on traffic-wave theory on total travel time and stopping number is remarkable.