Abstract
In order to accurately divide the traffic control subarea and improve the regional coordination control effect, this paper studies the key technologies of traffic control subarea division from the influence of the discrete characteristics of the fleet on the coordinated control. Correlation analysis method and regression analysis method are used to construct the correlation model of adjacent intersections. The principle and process of transportation subarea division are designed by using analytic hierarchy process, and a new traffic subarea division model is proposed. Taking Gulou Street in Miyun District of Beijing as an example, combined with the green wave coordination optimization method, the new model was applied and simulated in SimTraffic. The simulation results show that the average delay of the intersection is reduced by 21.4%, the total number of stops is reduced by 9.62%, and the travel time is shortened by 8.75%. The new intersection degree model and the coordinated control scheme obtained by the traffic subarea division model make the highest traffic efficiency. That is, to verify the scientific research method of this paper, the research results are reliable and the practical application value is high.
Highlights
In urban traffic signal control, optimization of the overall urban road network signal control scheme will be a very complicated process due to the limitations of the signal controller’s own capabilities and calculation time. erefore, several intersections and road sections with similar traffic characteristics are classified into a series of control subnetworks, and the signal control parameters of each control subarea network are optimized, respectively
Xu [10] of South China University of Technology proposed the correlation degree model in the high saturation state as the road segment queuing ratio. ere are correlation models proposed by Lin [11] and Zeng [12]
Compared with the current situation, the total vehicle delay in the intersections is reduced by 15.03%, the average vehicle delay is reduced by 21.41%, the total number of stops is reduced by 9.62%, and the travel time is shortened by 8.75%. e coordinated control of the partition scheme obtained by the traffic control subarea partitioning model proposed in this paper can greatly improve the traffic efficiency of intersections and help alleviate urban traffic congestion
Summary
In urban traffic signal control, optimization of the overall urban road network signal control scheme will be a very complicated process due to the limitations of the signal controller’s own capabilities and calculation time. erefore, several intersections and road sections with similar traffic characteristics are classified into a series of control subnetworks, and the signal control parameters of each control subarea network are optimized, respectively. E model considers the travel time of the road segment and the traffic at the intersection; the NAC Traffic Control Device Instruction Manual [5] defines the correlation between the travel time of the vehicle traveling between adjacent intersections and the signal period of the intersection. Ere are many scholars in China who have studied the relevance model, such as the intersection correlation calculation model proposed by Li [6] of Tsinghua University. E calculation model of the adjacent intersection degree is proposed by Lu [7] of South China University of Technology. Xu [10] of South China University of Technology proposed the correlation degree model in the high saturation state as the road segment queuing ratio. Most models have many constraints, and there are some shortcomings such as complicated calculation and difficult data acquisition
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