Abstract: To enhance the prediction precision of self-service bus stoppage time, the action sequence and action duration of passenger boarding and alighting behaviors were investigated in order to establish a bus stoppage time model for self-service buses.The investigation shows that if passenger density is not larger than critical passenger density, the duration of passenger boarding depends on fare-paying duration and has a statistic stability, otherwise, it is a function of the passenger velocity away from the fare-paying device and decreases nonlinearly with the increase of passenger density.The duration of passenger alighting depends on the passenger alighting velocity and has no relationship to passenger density.Statistic models for boarding and alighting duration of passengers giving priority to order and efficiency respectively were set up from field data.Based on the statistic models, a bus stoppage time model for self-service buses was established by considering driver behaviors.Numerical examples show that the relative error between calculational bus stoppage time using the bus stoppage time model and field data is less than 20%.