Study On Urban Road Network Division Method Based On Road Network Correlative Degree Analysis

When the city traffic congestion can not be alone by the traffic signal coordination control strategy to solve,the need to traffic control and traffic induction together,from the time and space to improve the traffic situation from two angles.The parameters and the model become more complicated when the traffic control and induction are carried out.If the cooperative road network is large,the management strategy of the traffic characteristics of the region is only used in different regions.Therefore,in these sense,It is also necessary to divide the urban road network into a coordinated traffic area.The current traffic control sub-district division breaks the research idea of the traffic district based on the road physical structure in the traditional planning.Considering the demand of the traffic area control,the classification of the control sub-area is realized by studying the correlation characteristics of the traffic parameters at the intersection.This paper proposes a method of road network segmentation based on roadway association degree considering the degree of intersections and the degree of association of intersections,and realizes the division of cooperative traffic area.Based on the measured traffic data of the intersections and sections of Xiamen City,this paper analyzes the characteristics of traffic flow at intersections and sections by time and space.The urban road network intersections and The conclusion of the link between the road sections is a theoretical support for the division of the subway area.Based on the analysis of the correlation degree model and the path correlation model of the existing intersections,this paper analyzes the road network area division and traffic-induced road area division of traffic control.This paper introduces the traffic condition discrimination index and the modeling of the road network association for the guidance and control coordination,taking into account the traffic flow correlation,and expatiates the steps of the regional partitioning algorithm based on the degree of road network association.In this paper,the method of virtual area road network simulation is used to verify the model method proposed in this chapter,and the road network partitioning scheme based on road network association degree analysis is obtained.Based on the partition scheme,the regional network is carried out by phase difference optimization Coordination control,access to optimization before and after the road network performance and the main parameters of the intersection.At the same time,as a comparison of the partition scheme,Synchro is used to divide the sub-regions of the same parameters.The evaluation results show that Synchro's scheme is more effective than the overall efficiency of the road network and the intersection efficiency.A certain degree of decline,this proposed road network sub-district division method can achieve good transportation efficiency.