Bus Frequency Allocation Model Based on Bus Service Mode

In the process of public transit operation there are two aspects, supply and demand, both of which are interactive. How to reasonably determine the frequency to coordinate the interest of two aspects is a key problem for transit operation management. Aimed at the frequency allocation problem, this paper uses dispatch frequency as decision variables and develops the minimum waiting time and the maximum net profit models, respectively, under the constrains of operating cost, service frequency, bus capacity, ridership, and the number of buses. Then the two models are combined with time value into one. In the model, the ridership is elastic to the number of bus trips at a given stop and a bus route can have more than one service pattern. The model is applied into a test network and the results show the model can maintain ridership, reduce waiting time, operational cost, and bus load.