Design of Shortturning Services for an Urban Bus corridor Considering Passengers’ Congestion

Abstract:

Based on the urban transportation demand, the paper studied the optimization multiple services approach of bus frequency and bus seats associating with urban transit to transport passengers. For the operation characteristics of a bus corridor, the paper presents a bilevel model for optimization of a bus corridor. The upper optimizing model of minimizes the costs in terms of waiting time, invehicle travel time and operator cost. The models then determine which of these services should be offered at what frequencies and with number of vehicles. The lower model is traditional stochastic user equilibrium(SUE) model. The sequential quadratic programming(SQP) algorithm is developed for constructing optimal approach and proved the ability to find the optimal solution. An application of the models to the case shows that the optimizing models are practical and effective for satisfying the demand of passengers and improving the operating efficiency of bus transit system.