Research On Bus Line Modeling And Optimal Transfer Based On Cellular Automata

With the rapid advancement of urban expansion in China,the pressure on urban road traffic is becoming greater and greater.At the same time,travel delays for passengers and substantial economic losses in the city also follow.Therefore,using some effective measures to alleviate the pressure of urban road traffic and improve the capacity of urban roads are currently the top priority.As an important part of urban public transport travel,conventional bus travel is also one of the effective measures to alleviate urban traffic congestion.As an important evaluation index for the reliability of public transport services,public transit is one of the important evaluation indexes for urban residents to choose public transport services,and it is also an important reflection of the efficiency of public transport services.In the actual bus service operation,the setting of the scheduled bus schedule will often take public interchange into account.In the case of clear roads,passengers can transfer to other bus routes when the bus arrives at the station.However,once the road is blocked or congested,it will be very difficult for the bus to complete the transfer at the bus station.In this case,the reliability of the bus service is reduced.Therefore,a detailed study and analysis of public interchange can more clearly understand the impact of public interchange on passenger travel time.This is of great significance for maintaining the reliability of bus services.The research work of this paper mainly starts from the following aspects:This paper proposes to use the bus synchronous transfer optimization model based on bus hopping and stagnation to optimize the bus synchronous transfer behavior,and at the same time use the improved cellular automaton NS model to simulate the operation of bus road driving,combined with bus The synchronous transfer optimization model performs real-time strategy adjustment on bus road driving,and verifies the bus synchronous transfer optimization model for real-time adjustment of bus road operation through relevant parameter settings,and finally obtains the relevant bus optimization transfer conclusion.First of all,based on the problem that the real bus can’t be transferred synchronously due to road traffic,this paper proposes to use the bus synchronous transfer optimization model based on the bus hopping strategy and detention strategy to adjust the bus road driving in real time.At the same time,the bus time offset in thebus synchronous transfer model is adjusted.The relative time offset is compared with the predetermined time offset.It is found that the bus synchronous transfer optimization strategy has a better effect on bus optimization under the relative time offset.Secondly,based on the cellular automaton NS model,this paper establishes an improved NS model to simulate the actual running state of the bus road,simulates the behavior of the bus acceleration,deceleration,and stop on the road.The real-time strategy adjustment of the bus by the optimization model,using CPLEX to quickly solve the bus synchronization optimization model,get the relevant optimization strategy in a short time and pass the optimization strategy to the bus,by using the bus stop strategy and jump The station strategy adjusts the travel of buses,so that buses on different lines can complete synchronous transfers.Then,this paper studies the optimization effect of the bus synchronous transfer optimization model by using different bus time intervals for different bus lines and setting up bus lanes on different bus lines.At the same time,the impact of bus lanes on passenger transfers by different bus line settings Were studied.Finally,by setting relevant road data and passenger OD data to numerically verify the model,the relevant results are obtained.At the same time,the real-time use of the synchronous transfer optimization strategy and the impact of the bus lane setting on the passengers ’synchronous transfer are summarized and discussed.The optimization of vehicle operation and the setting of dedicated bus lanes provide suitable solutions,and put forward a reasonable evaluation and analysis of the relevant solutions.