Abstract: In this paper, the impact of the arrangement of bus stations without bus bay along the same section of the highway on traffic flow is studied by using the cellular automata traffic model on two-lane. Simulated results show the impact of the distributed bus stops on traffic capacity is significantly reduced via comparing with the centralized ones. The gap of the location of bus stops, the length of the platforms, stopping time and the ratio of bus in mixing traffic have a major impact on the urban road capacity.