优化双向“绿波带”关键路口控制参数算法的研究

Research on the Algorithm for Optimizing the Key Intersection Control Parameters of Two-Way “Green Wave Belt”

摘要: 城市交通拥堵已成为影响民生的重大问题，为此，交通工程师们进行了许多有益的探索，达到了较好的效果。城市交通信号控制系统，通过自动检测路面交通流量，给予交叉路口的红绿灯最优控制方案，也一直是研究热点。交通“绿波带”在一些城市的实践，给市民很好的参与感，但是目前“单向交通绿波带”仍然难以满足干线交通双向协调控制，并且过分强调特定方向绿波控制，也会带来逆向交通受阻或“红波带”现象，有时也会严重影响交叉路口关联相位的通行效率。能否利用时空图，优化绿波控制信号周期及绿信比的算法来进一步提高通行效率，实现“双向绿波带”是本文重点。通过对闵行区新镇路关联路口的研究，优化交通信号控制策略。

Abstract: Urban traffic congestion has become a major problem affecting people’s livelihood. Thus, traffic en-gineers have carried out many useful explorations and achieved good results. Urban traffic signal control system, which automatically detects the traffic flow on the road and gives the optimal con-trol scheme of traffic lights at intersections, has also been a research hotspot. The practice of traffic “green wave belt” in some cities gives citizens a good sense of participation. At present, however, the “one-way traffic green wave belt” is still difficult to meet the two-way coordinated control of trunk traffic, and too much emphasis on the green wave control in specific directions will also bring re-verse traffic obstruction or “red wave belt” phenomenon, sometimes seriously affecting the traffic efficiency of the intersection correlation phase. Whether we can use the spatio-temporal graph to optimize the algorithm of green wave control signal period and green signal ratio to further im-prove the traffic efficiency and realize the “bidirectional green wave band” is the focus of this paper. Through the study of Minhang District Xinzhen Road intersection, the traffic signal control strategy is optimized.