Journal of Study on the Impact of Urban Traffic Capacity due to the Lane

Abstract. We aim to investigate the problem of the impact of lane occupation on urban road traffic capacity and vehicle queuing length.We successfully solve the degrees of impact of different lane occupation on the actual road capacity, the relationship among the vehicle queuing length and the cross-section actual capacity and traffic flow on upstream by the theories of speed-flow model and improved traditional cumulative reach-leaving model.Through the analysis of examples, we conclude that the model presented in this paper is reasonable and can be used in practice to solve the relevant problems. The lane occupation means the cross section of the traffic road becomes narrow because of the traffic accident, temporary roadside parking, work and other factors, which always lead to traffic jams.Because of the characteristics of traffic flow density, strong continuity on the city road, if a lane is occupied, it may reduce the road all the lanes of traffic capacity.Even though the time is very short, it may also be caused by traffic jams. If it is treated inappropriately, traffic jams would become terrible. In China, lane occupation is very common.To estimate correctly the influence degree of the city road traffic capacity due to the lane occupation, it will provide a theoretical basis for the traffic administrative department, on the correct guide vehicle, reasonable examination and approval work, set the curb parking and setting non harbor shaped bus station etc