Research On Bus Rapid Transit Station Capacity Based On Queuing Theory

Bus Rapid Transit(BRT)is a kind of urban public transport mode which has been successfully promoted in the world with fast speed and traffic volume second only to subway.Taking Guangzhou BRT as an example,at present,the daily average passenger flow is more than 700000 person times,and the one-way passenger flow is more than27000 person times/hour.It has become the busiest BRT system in Asia,and plays a significant role in improving the road traffic environment and carrying high-density passenger flow.However,Passenger’s demands on platform and in-car service quality are constantly improving,the operation level of the existing BRT system still needs to be improved.Therefore,it is necessary to conduct in-depth research on BRT platform space utilization,station berth design,system operation status and service level,so as to provide solid technical support for local BRT system design,operation and management.The specific research contents of this paper are as follows:Firstly,the line capacity of BRT stops is studied.Through the processing of the data of BRT vehicles in and out of the station,the law of BRT vehicle arrival and service time is analyzed.Based on the analysis of the factors affecting the capacity of BRT station,the capacity model of BRT station bus line based on markov chain was established.The model can be used to calculate the maximum bus route capacity of BRT station at a certain service level.Secondly,the passenger distribution process of BRT platform is studied from the perspective of passengers.Aiming at the question of how much service capacity the BRT platform can provide passengers during peak hours,different mathematical expression models are constructed.The passenger distribution process is divided into two subsystems and the corresponding two interrelated hierarchical queuing network models are established,namely the M/G/c/c state dependent queuing model and the discrete time queuing model of stranded passengers on the platform.Then,the model of the total queuing network is established.Finally,based on response surface method(RSM),Minitab software is used to solvethe dual response of BRT station passenger service model.Based on the actual cases,evaluate the number of passengers that can be served in the current design of the BRT station during the peak hours and ensure the good service quality.