Dynamic allocation mechanism and model of traffic flow in bottleneck section based on vehicle infrastructure cooperation
In response to the traffic congestion caused by a large number of lane-changing behaviors in bottleneck sections of expressways,taking the weaving section of expressway as an example,which is a frequency variable area of traffic flow,this paper analyzes the characteristics of vehicle infrastructure cooperation operation,establishes a dynamic assignment model of traffic flow in the bottleneck section,uses C-V2X,edge computing and other technologies,designs a dynamic allocation system of vehicle flow based on vehicle infrastructure cooperation,and studies its operation mechanism.The traffic flow allocation system is simulated and analyzed using MATLAB cellular transmission model.The simulation results show that the optimization effect of the dynamic allocation system is obvious.The traffic time is reduced by about 11.4％in synchronous flow state and 39.7％in congested flow state.The research results are of great significance to reduce the operation delay in the weaving bottleneck area of the expressway and improve the traffic flow efficiency and expressway capacity.
万方数据
维普
