关键词: 城市交通, 发车间隔, 数学模型, 发车频率, 道路拥堵, 公共交通

Abstract: The determination of bus headway is the base of bus operation planning. Reasonable bus schedules can optimize the operating costs of bus enterprises and well meet the passengers’ demand. In this paper, a bus headway model is developed considering the bus service level and the number of operating bus. The traditional model is improved by introducing the congestion coefficient and using the passenger mileage. An example shows that the headway calculation is more simple, and a balance between operating costs and passenger satisfactions are achieved because of the proposed model. The congestion coefficient significantly affects the bus headway determination and optimizes bus schedules.

Key words: urban traffic, bus headway, mathematical model, bus frequency, road congestion, public transit