Regional Green Wave Coordinated Control Model Suitable for Unequal Double-cycle
To overcome the limitations of existing regional green wave coordinated control models,which are primarily oriented toward the single-cycle control mode,a regional green wave coordinated control model suitable for unequal double-cycle control demand has been proposed. This model provides a calculation for the regional common signal cycle range and a method for determining double-cycle intersections. Based on the main characteristics of the double-cycle control mode,the constraints for phase initial point,phase execution time,phase sequence,as well as initial point and passage time of the coordinated traffic flow were established for both single-and double-cycle intersections. The objective function of the regional green wave coordinated control,which maximizes the weighted sum of the green wave proportions for each coordinated traffic flow and its volume,was established using the projection calculation method. The proposed model was applied to a partial real-world network in the Futian District,Shenzhen City,Guangdong Province,China.To compare the control effects of the status quo,Synchro,and the proposed model,two evaluation indicators-average delay time and average number of stops-were chosen to evaluate them from the perspectives of intersection,coordination path chain,and the entire network,respectively.The simulation results indicate that the proposed model effectively reduces the average delay time at intersections and in the entire network.This scheme reduces the regional average delay time and the average number of stops by 13.94％ and 9.71％ compared to the Synchro scheme in double-cycle control mode,respectively. Additionally,the proposed model improves the overall control effect of the coordination path chain in the region,reducing the coordination path chain average delay time and the average number of stops by 66.41％ and 55.73％ compared to the Synchro scheme in double-cycle control mode,respectively. Thus,the proposed model can achieve coordinated optimization for both single-and double-cycle intersections in the coordinated network,making it suitable for complex traffic scenarios in a coordinated network where there exists a road section crosswalk and branch road intersecting with a main road or artery.Moreover,the proposed model achieves a significant coordinated control effect in the control network,particularly in the coordination path chain.
万方数据
维普
