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In recent years, China's society has developed rapidly, the high-speed railway network has become more and more perfect, and the competition between high-speed rail and civil aviation has become increasingly fierce. In the country's newly introduced national transportation development plan, the development of the comprehensive transportation system is placed in an important position. The operation of the empty railway is an important part of comprehensive transportation, and it has attracted more and more attention. In the development of air-rail transportation, the decisive role is still in the formulation of fares. A cheaper fare can attract huge passenger traffic, so it is necessary to explore a reasonable method of fare development. This paper chooses to establish a bi-level programming model, and set the upper-level planning objective function to maximize the ticket benefit of the relevant departments of the empty-rail intermodal transportation. The objective function of the lower-level planning is to minimize the passenger's general travel cost and solve the model, so as to obtain a relatively complete The method for formulating fares for air and rail transportation provides a reference for the formulation of air and rail freight fares in China. Finally, the paper validates the model based on the air-rail combined transport line from Beijing to Sanya. Keywords—Air-Rail intermodal transport; bi-level programming model; transport service; pricing method

A Bi-level Programming Model on the Pricing Method for the Air-Rail Intermodal Transport