Separate Tandem Bus Berth Line Parking Allocation Model

The development of urban transportation presents a diversified,convenient and coordinated development trend.Conventional public transport undertakes a larger urban passenger transport task and plays a key role in the evacuation of passenger flow in the central area of the city and the accessibility of the urban fringe area.There is no doubt that it is still an important part of the development of the urban transportation system.For a single bus stop with a large passenger flow or a single bus stop with functional requirements,part of the urban planning and construction process will split it into separate tandem bus berths to improve the environment for passengers getting on and off the bus.For separate tandem bus berths,the parking of each bus line should fully consider factors such as the frequency of vehicle departure,the corresponding passenger arrival rate,and the service time of passengers getting on and off the bus.This research can promote the reduction of the average running time of public transport vehicles in the interval,which is of great significance for improving the operating efficiency of public transport system.Separate tandem bus berths can be divided into three types in terms of setting form,among them,the operation of vehicles in double harbor bus station in separate tandem berths is more complicated and interference factors than the other two forms,Therefore,the article chooses double harbor bus station separated tandem bus berths as the research object,by considering the vehicle departure interval,the time of passengers getting on and off the bus on each line,the operating conditions of road vehicles,the number of parking spaces at the station,the layout of the platform and the corresponding size,etc.Obtained the average running time of the vehicle interval for all the route allocation schemes of separate tandem bus parking spaces under the two conditions of allowing overtaking and prohibiting overtaking on the road section.This article first elaborates on the layout of separate tandem bus berths,analyzes the advantages and disadvantages of the three tandem bus berths,and introduces conventional queuing theory and staterelated queuing theory,as well as Simulink discrete simulation environment.Secondly,the double harbor bus station in separate tandem berths is selected as the research object,fully considering the vehicle arrival rate,the number of berths at the station,the time of passengers getting on and off the bus,the cross-sectional flow of adjacent lanes,etc.,based on the M/M/N queuing theory,M/G/C/C state-related queuing theory,gap acceptance theory,establish two separation tandem bus berth line distribution model,and use Matlab to design related programs.Thirdly,in order to verify the validity of the model,Simulink is used to establish two discrete simulation model of separated tandem bus berths,and the Matlab program is run to obtain the mathematical model results.Six sets of data are randomly selected as input to the Simulink simulation program,and the average value is taken after 200 parallel simulations.The simulation model results are obtained,and the mathematical model results are compared and analyzed with the simulation model results.It is concluded that the model accuracy is about 94% and 95%,and the model is effective.Finally,this article takes the bus station on the east of Shuanglin Road in Chengdu as a case.Through traffic investigation,analysis of passenger flow data at the stations,headway and cross-sectional flow of adjacent lanes,and bus arrival rates of each line,set the model parameters such as the number of parking spaces,the length of the platform,the opening and closing time of the bus,and the acceleration of the bus starting.Establish the route distribution model of Shuanglin Road East separation tandem bus berths,and solve the model to get the best route distribution plan.