关键词: 城市交通, 路径关联度, 计算模型, 交叉口群, 信号协调控制

Abstract: A method for the route correlation degree calculation is proposed to realize the traffic coordination control of the routes with a strong correlation in the intersection group. To avoid the detrimental effect such as spillback and starvation, the model considers several influencing factors, namely, the topology of the intersections group, the channelization and timing plan for each intersection, flow distribution, travel speed, the dispersion of traffic platoons, etc. The route correlation model composes of dispersion index and retardation index. An intersection group in Chuzhou city of China is taken as a case study. The coordination objects are determined after the correlation degree for all the routes are obtained. The improvements of the traffic operation are validated by the Synchro simulation. The results show the proposed method can effectively descript the correlation characters of the routes in the intersection group, which lays foundations for traffic coordination control.

Key words: urban traffic, route correlation degree, calculation model, intersection group, signal coordination control