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With expressway network in our country tending perfect and road traffic becoming heavier, single point toll collection system at present is increasingly unable to meet the charge requirement which demands fast, accurate, equal, and efficient. Networked toll collection system, as a modern mangerment instrument, is widly used in many fields across the country and can effectively improving efficiency of transportation, elevating our service quality and management levels, speeding up charge circulation. Therefore, Toll Collection System of Expressway Network is the inevitable trend of the expressway charge system.Combined with the national policy, this paper carried out a research on culculating ideas and approach, gave an introduction to some formula of main charge ways and the process of calculation, also made a detailed analysis about the calculation procedure of the toll and the treatment methods of each procedure, and thereby identified requirements of function modules inToll Collection System of Expressway Network .By studying the basic functions of Interconnection charges system software, In accordance with most problems exist in current interconnection charging system, this paper, conducted software design of Toll Collection System of Expressway Network on the base of actual road networ model, proposed patition of main function modules, data storage format, and the designation of critical data form. Then we built the expressway network model on the base of GIS in Hunan Provincy, gave an example of fare culculation of expressway network toll collection system based on the expressway network. Considering the present conditions that olicy transformats multifarious, the paper brought complex toll calculation after toll-by-weight and each segment has a unique price. So we build up a charge model system that in general use. Through the parameter management to deal with all these variables, so as to reduce the modification to the toll collect software, guarantee the stability of the toll collect system. The paper anlysed the existing charging models and process in the present system, found out loophole in it, then established a more complete perfectly dismantle debt model, and finally design a set of scientific and rational, practical Toll Collection System of Expressway Network.In this article, the design of the network model and network model-based networking system has great significance to improve the status of the highway network charges, standardize process of the toll and rase operation efficiency of toll system in Hunan Province. The model of this project can be widely used in other provinces, and will bring remarkable social and economic benefits.
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