The Research On Operation Cycle Optimizing Of Demand Responsive Connection For One-Vehicle Case

With the accelerating of urbanization process and the increasing of private car ownership,urban transportation problems are becoming more and more serious.The DRC buses shuttle passengers to the subway,BRT and high capacity trunk bus station according to passenger demand in service area.It has relatively lower operation costs,high flexibility of line operation and departure time,it can also effectively solve urban "the first / last mile" problem.With continuously expanding of urban size and constantly emerging of suburban area,the DRC bus will be more widely used,and the promotion of DRC is not only conducive to the traffic volume diversion of private cars but also ease the pressure on road traffic,hence the thesis is of great theoretical significance and application value.Firstly,the research status at home and abroad are summarized in the thesis,based on these,the travel characteristics of passenger's non-uniform trip distribution,the travel time window requirements,passenger's cancel reservations and other characteristics are analyzed.The service form such as HCPPT,PDRT,MAST and DRC are comparatively discussed in the thesis,and the appropriate service area,service objects,etc.are introduced also.Secondly,considering the non-uniformity of the passenger trip distribution,the operation cycle optimizing model is constructed with the minimum passenger travel cost as the target,the passenger time window requirement and the vehicle capacity etc.as constraints,and the model algorithm is designed based on Genetic Algorithm.Then,the additional cost of passengers cancel the reservation are put forward and analyzed.In view of the whole system,considering the proportion of the shuttle passengers and the passengers cancel the reservation,the DRC operation cycle optimization model of one-vehicle case is rebuilt with minimum total cost as the target,and the cost of passengers,the additional cost passenger and operators are all taken into account.The optimizing model algorithm is designed based on the genetic algorithm method for solving traveling salesman problem.Finally,a series of simulation experiments are carried out to verify the validity of the model and method.Through the simulation experiments,the relationship between the optimal operating cycle,the operating cycle and total cost under different trip distribution are analyzed.The influence among thepassenger number,transfer ratio,the reservation canceling ratio and the optimum operation cycle are obtained,and the association between the operation cycle and the total cost is discussed.Under the two kinds of operation cycle optimizing model,the change rule of the optimal cycle and travel cost are comparatively analyzed also.In the thesis,the actual passenger travel is given full consideration and the DRC operation cycle is determined by the interests of passengers and operators,the thesis provides a set of useful methods for the schedule optimizing of DRC buses in one-vehicle case.