Impact Of Vehicle Delay Analysis Of Bus Stops Layout Of On/Off Ramp Of Urban Expressway

Has a strong urban expressway traffic through sexual characteristics, traffic capacity, traffic speed, is the domain-wide long distance service in the city's rapid transit and rapid outbound traffic. With the rapid growth of vehicle population and rapid increase in bus lines on the road, fast road speed limit road congestion problems as the main reason for capacity. Set in the fast way, especially near the bus station entrance, a peak time of the bottleneck of fast road vehicle operation, when the location of bus stops do not match with the import and export, import and export will increase traffic flow in the turbulent section of weaving run, leading to bottlenecks increase.In this paper, a fast way of bus stop locations for the import and export of vehicles. Vehicle entrances and exits on the expressway operating characteristics and problems of systematic analysis, optimization improvements. With the fast bus station and out of the operating characteristics of bus stops at the entrance of different positions, diversion on the import and export of vehicles, confluence of the interference. Bus Station and the entrance of the existing model based on the minimum distance, under different traffic conditions to discuss the minimum distance. Based on bus traffic delays on the main road model, the location of bus stops by the model parameters. The entrance of the downstream bus stop, for example, using simulation software VISSIM network model established. Analog bus stop location, the main road flow, the inlet flow rate of three factors changes, the entrance of vehicles delayed changes of speed. Liujiayao west of the South Third Ring Road of Beijing bus station area, for example, an example based on measured data, analysis and case simulation, the appropriate bus stop location and vehicle delay with the flow, change the location of bus stops, and then to solve congestion in the region to make recommendations on measures.Through the Fast Way entrances, bus stop the interference of qualitative analysis, the bus stops at the inlet upstream of the main road highway vehicles less interference. The main road through the different flow, the inlet flow, location of bus stops network scenarios to simulate, to the bus station near the entrance of the proposal,10m-50m away from the entrance to the bus station should not be set, traffic is relatively small, location of bus stops should be with the entrance of the appropriate distance 50m-110m, the case of large traffic flow, bus stations and the entrance of a suitable location should be away from the 80m-130m. Vehicle delay and the average speed through the target can be seen, the smaller the distance between bus station and the entrance, the greater the traffic, the vehicle entrance more serious disruption, obtained by the simulation delays the entrance of the location of bus stops by the law can be Bus stops for fast road to provide reference. Because of limited capacity, this question remains to be further studied.