基于逻辑规则的单交叉口自适应控制方法

为了优化单点交叉口信号控制方案,实施自适应控制措施,提出一种基于逻辑规则和优化模型的交叉口自适应控制方法。优化进口道检测器布设方案,车辆数据通过进口道多组检测器采集获取。逻辑规则以各进口道红灯期间排队车辆数和绿灯期间到达车辆数为基础数据,以交叉口通行能力为决策目标,进行相位切换决策判断。建立相位放行时间优化模型,优化相位切换决策后主要相位放行绿灯时长,避免车辆二次排队和相位绿灯期间单方向车流放行。运用VISSIM仿真软件,对比分析该自适应控制方法与感应控制方法和定时控制方法的控制效果。结果表明:该自适应控制方法下交叉口延误主要与饱和度相关,其延误数值均明显小于其他两种控制方法。

In order to optimize isolated signalized intersection control and implement adaptive traffic control measures,an adaptive intersection control measure based on the logic rules and optimized model is proposed in this paper.By optimizing entrance detectors layout scheme,vehicle data can be collected by multiple detectors at the entrance.Queuing vehicles during red time and arrival vehicles during green time are basic data for the logic rules.Logic rules take the intersection capacity as the decision-making base to determine phase switching decisions.Phase green time optimized model is established to optimize the major phase green time after phase switching decision to avoid secondary vehicle queuing and one direction vehicle release during green time.VISSIM simulation software is used to compare and analyze the control effect of the adaptive control method with induction control method and timing control method.The result shows that the intersection delay under the adaptive control measure is mainly associated with the saturation,and the delay values are significantly smaller than those of the other two control methods.