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针对主干道信号协调控制问题,提出一种新的动态分段协调控制技术.首先分析路段长度、交通密度以及信号周期时间对关联度的影响,设计了基于分层结构的关联度模糊计算方法和基于关联度的控制子区划分方法;然后提出一种子区协调控制算法,根据一段时间内交通流信息计算子区公共信号周期、上下行相位差和各路口的绿信比.实际应用表明,该控制技术能有效降低主干道交通流平均旅行时间和平均停车率,效果令人满意.
Aiming at the coordination control of main road signals, a new dynamic segmentation coordinated control technology is proposed.Firstly, the influence of link length, traffic density and signal cycle time on the degree of association is analyzed, and a fuzzy calculation method of correlation degree based on hierarchical structure is designed. Based on the degree of correlation control sub-area division method; and then proposed a sub-area coordinated control algorithm, based on traffic flow information within a period of time to calculate the sub-area common signal cycle, the uplink and downlink phase difference and the intersection of green ratio. Practical application shows that the The control technology can effectively reduce the average travel time and average parking rate of the traffic flow in the main road, with satisfactory results.