| With the rapid development of urban roads in China,the number of motor vehicles has continued to grow.China has gradually transitioned from the original bicycle country to a country where motor vehicles account for the main mode of travel.Nowadays,most of the city’s main roads are no longer able to meet the needs of vehicles,and urban traffic congestion is also growing.The road network in urban roads is composed of one node and the road section.The nodes of the urban road network are the intersections of urban roads.The most important thing that restricts the traffic flow of urban roads is the intersection of urban main roads.Traffic and traffic efficiency.The intersection of the city’s main roads is the heart of the city road.This paper mainly analyzes the operation characteristics of mixed intersections and the formation of intersections and conflicts at intersections.The TRRL method is used to explore the spatial optimization and time optimization methods of intersections by using the above theory to establish a model for calculating intersection traffic efficiency.At the intersection,the traffic capacity of the intersection and the vehicle delay time are the main indicators to verify the correctness of the model.Through the selection of some intersections in the roads of the main roads of the city as an example,the field survey data is collected,and the intersections are optimized and optimized one by one according to the previous theory,and then the evaluation indicators are used to verify the rationality of the optimization.The model established in this paper is based on the TRRL method and optimized according to the current road conditions in China.It also considers multiple intersections for simulation,which is closer to the current road traffic in China,and comprehensively considers the overall optimization of the urban road network rather than a single The optimization of the intersection is more practical. |
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