High-grade Highway Toll Station Capacity Evaluation

The traffic capacity of highway toll-station is influencing the traffic capacity of highway directly, thus restricting the traffic operation conditions of the highway on the whole. So improving the traffic capacity and the service level of highway toll-station is an effective method of improving the traffic capacity and service level of the highway.Firstly, the concepts of toll-station and its traffic capacity are introduced. In addition, the background and current situation of the traffic capacity of highway toll-station in the world are continually discussed. On the basis of that, the traffic flow characters of highway toll-station in Yunnan are reasonably analyzed, and then up-flow headway distributing, sever-time in toll-station and away-time distributing of different type vehicle are fixed.Secondly, the paper takes C# as the development tools, the highway toll-station microscopic simulation model is developed based on the operation characteristics of traffic flow and its distributing characters. The model has considered the difference in service time for different vehicle as well as the actual factor in vehicle choosing line, and carried on a simulation analysis to the traveling capability of the toll station and the service level in line delay situation under different traffic composition.Finally, service level of toll-station is divided to two types, one is operation level of service (OLOS) based on user operation condition, and the other is relative level of service (RLOS) based on the system superintendent from the toll-station use factor angle. The paper puts forward to use the toll-station average line length and the average line time as the RLOS appraising index, and gives the analysis step. And by analysis and discuss of server way of toll-station, several methods to improve traffic capacity of highway toll-station are put forward.