| With the acceleration of China’s urban modernization,the number of urban residents’ motor vehicles and road traffic increase sharply,and the limitation of urban land leads to a more acute contradiction between the existing traffic infrastructure and traffic demand.The emergence of intelligent traffic equipment brings about the gradual development of intelligent vehicle-mounted system and intelligent roadside system.Vehicle-to-road collaborative system based on vehicle-to-vehicle and vehicle-to-road information interaction is a technical measure to improve the efficiency of urban traffic operation.The promotion and application of vehicle-road collaboration technology have a significant positive effect on the economic and social benefits of the city.Considering the main traffic demand of urban arterial in the future will be the efficient traffic demand of social vehicles(cars)and public transport vehicles(cars).Due to the difference in function and performance of public transport vehicles and social vehicles(cars),the two modes of transport will have different driving parameters.Based on the background of vehicle-road coordination environment,this paper studies the trunk line coordination control method under the condition of mixed traffic between buses and cars.The research contents are as follows:First of all,the basic conditions and important parameters of coordinated control of urban arterial are summarized.Based on the general mixed environment of social vehicles and buses,the coordinated control model of trunk traffic signals considering public transport and social vehicles is proposed,and the important parameters of the control model are explained.Secondly,based on the overall framework of the arterial coordinated control system considering public transport and social vehicles in the context of vehicle-road coordination,the vehicle generation model,the vehicle following model and the bus stop time prediction model in vehicle behavior are introduced.The arrival rate prediction model under different phase Settings is analyzed,the vehicle delay calculation under arrival rate prediction is analyzed,and the intersection signal parameter optimization model is proposed.Based on the optimized signal parameters,a trajectory control method is proposed to reduce vehicle energy consumption and improve bus service quality.The instantaneous fuel consumption model was used to calculate and analyze the vehicle fuel consumption in the experiment.Finally,the MATLAB simulation platform and the important models of traffic flow simulation are briefly introduced.This paper introduces the background of the simulation experiment,including road network,traffic volume and other models and parameter sources,and calibrates the following model parameters,signal optimization parameters and vehicle instantaneous fuel consumption parameters in the simulation experiment,and expounds the process of signal optimization.Compared with Webster single intersection timing control and MAXBAND coordinated control,the simulation evaluation indexes of average vehicle driving time,social vehicle fuel consumption and bus station service time were selected and the simulation results were analyzed.The simulation results show that the coordinated control can effectively reduce the total vehicle delay,reduce the fuel consumption of social vehicles and increase the service time of bus platform.It is hoped that it will have some reference significance for considering the coordination and control of public transport and social vehicles in the future. |
