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Our country road loans, loan fees system more than 20 years of history, the implementation of this system has played a great role in promoting the rapid development of China's highways, especially highway construction. The construction of toll roads must build a toll system, the most important part of the toll system, toll station, the size and how much of the toll lane of the toll booths on the construction of the initial investment in civil engineering and staffing operators when charges have a decisive impact. The scale of the toll plaza and the required number of lanes of traffic (average cars interval), the three factors that determine the capacity and service levels for each toll lane. Fees capacity and service levels, scientific and theoretical basis for the construction of the highway toll station of reasonable size, lay the foundation for the effective use of limited funds for highway construction. Therefore, to determine the various traffic, toll lane capacity under different level of service is a very important economic significance. In this study, the analysis on the basis of capacity at home and abroad on the highway toll station research and rational analysis of the traffic flow characteristics of the Beijing highway toll station, the Institute, the research method and research steps. First, in accordance with the service process to complete different tasks, will accept the service time is divided into two parts: a pure service time and departure time; Second, developed for the specific circumstances of the toll station in Beijing, Beijing highway toll stations the capacity of the data acquisition program, toll station traffic stream running data-site investigation, field data collected from all toll stations in the Beijing area type; Third, the toll station traffic stream running data through on-site investigation, fully grasp Beijing toll station operators to understand the traffic laws governing the operation of the toll station, based on the measured data, determine the toll stations upstream car distribution, the statistical distribution of the various models in different types of charging stations service time and departure time, Meanwhile, in order to facilitate the calculation, the merged some of the characteristics values ??approximate toll station type, and finally take advantage of a variety of different models in different types toll station service time and leave time, calculated based on service time and departure time of the toll station vehicles conversion coefficient; Finally, the calibration of these characteristic parameters, according to the characteristics of the different types of charging stations parameter, using the M / G / K queuing theory model to calculate the basic capacity of the types of charging stations and the charging station the average queuing vehicles number of indicators of the level of service as an evaluation of the toll station, the service level quantitative highway toll station is divided into four, and get the level of service standards at all levels of the different types of toll booths and the corresponding maximum service traffic.
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