Impacts Analysis Of Non-motor Vehicles On Buses’ Stopping Process At Bus Stops

As an important node of public transit routes, bus stop is a designated place where buses stop for passengers to get on and off. Motorized vehicles and non-motorized vehicles are easy to form mixed traffic flows on a road with bicycle lane and motor lane separated by marking line. The interaction between non-motorized vehicles and buses is remarkable within the scope of bus stops. The interaction exists when the bus is approaching and leaving the bus stop and serving passengers. Non-motor vehicles mainly include electric bicycles and bicycles in most cities of our country. Thus, this paper focuses on these two kind of non-motor vehicles.Supported by National Nature Science Foundation Program of A Research on the Phased Technological Evaluations and Decisions of the Urban Road and Traffic Schemes Based on the Function Analysis(Program Number: 51278468), and Zhengzhou University Graduate Student Innovation Project of Impacts Analysis of Electric Bicycles on Buses’ Stopping Process at Bus Stops(Program Number: 13L00802), the interaction between non-motor vehicles and buses around bus stops is studied.Operating process of a bus around bus stops consists of the pull in process, parking process and outbound process. The study respectively expounds the causes and results of the interaction between non-motor vehicles and buses according to bus’ s three processes. Non-motor vehicles may get through the gap between the bus vehicle and the platform while passengers are getting on and off the bus. These non-motor vehicles would create cross-flows that interact with the flows of boarding and alighting passengers. Hence, space-time trajectory is used to describe the increase of passenger service time caused by the interference which results in greater delays for the bus.The model of dwell time about the number of alighting and(or) boarding passengers is a linear one and the impacts of non-motor vehicles should be taken into consideration. Service time model is built based on impacts analysis of non-motor vehicles on buses’ stopping process at a bus stop. Dwell time is obtained by adding service time to the time to open and close the bus doors. The models of loading area capacity and bus stop capacity are improved by deriving.Finally, this paper provides example applications of calculation models at two bus stops in Zhengzhou: not-bay bus stop and bus bay stop. Binary linear regression equations of service time are obtained through regression analysis, which are about the number of passengers getting on or off a bus and the number of non-motor vehicles. Loading area capacity respectively reduces by 12.9% and 6.2% at the not-bay bus stop and bus bay stop. Compared with bus bay stop, the interference of electric bicycles and bicycles at the not-bay bus stop is larger. In order to balance the interference of non-motor vehicles on parking process of a bus and the delay of automobiles due to the distance between the bus vehicle and the platform, sensitivity analysis of influence degree is performed at one bus stop with different dwell distance. Results show that the best dwell distance is the middle distance. It means that the best dwell distance is 1/3 to 2/3 the width of bicycle lane.