Study On The Optimization Of Artery Signal Coordination Control

With the rapid development of our country's economy,but also with some social side effects,in fact,the problem of traffic congestion,which is closely related to the lives of the residents,has become a problem in the world.Road traffic is a complex system with many participants,including cars,roads and people.Among them,motor vehicles and people are more flexible,so traffic control appears,to restrict and regulate traffic behavior.Under the premise of reasonable planning of traffic system,the development of traffic control strategy also needs to be studied in many aspects to ensure its scientificity and applicability,which can greatly alleviate traffic congestion problems and improve the quality of life of residents while reducing traffic accidents.At present,the rapid development of many cities is accompanied by the rapid growth of the number of motor vehicles,the tension between the supply and demand of the transportation system,signal control has also become an indispensable part of the transportation system.This paper focuses on the optimization of the parameters needed for signal scheme in the coordinated control of trunk line signals.The specific steps are as follows:1.According to the field observation and the analysis of data,the phase scheme of each intersection is designed by the flexible phase idea.2.Calculate the flow ratio of each phase and the spacing between the intersections to determine the length of the public cycle and the critical intersections.3.By using Webster formula,the signal timing scheme of each intersection is refined.4.The maximum green band method is used to determine the phase difference and the green band diagram is obtained.In this paper,the phase switching mode,the public cycle selection mode,the green light distribution mode and the phase difference calculation method are optimized and studied respectively.The solution of the phase difference is the largest Greenbelt.Based on the classical model of the largest Greenbelt,the new model is optimized.Finally,an example is introduced to optimize the proposed indicators by using the above methods.Finally,the scheme is verified by using vissim simulation software.The present scheme of the selected section is compared with that of the model.Finally,the advantages,disadvantages and applicability of the model are analyzed based on the reference data.