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With the gradual deepening of the social and economic impact of the high-speed railway, the evaluation of the impact of high-speed railway construction on the pro、vinces and cities along the route (especially the accessibility evaluation) is particularly important. This paper is taking WuhanGuangzhou high-speed railway as an example, and combining with the calculation results of four different accessibility indexes, this paper discusses the relative accessibility of the cities along the Wuhan Guangzhou high-speed rail line before and after the completion of the high-speed railway. By comparison, we find that there is a great difference in accessibility between different accessibility metrics. In order to fully consider the changes of city accessibility, this paper introduces data envelopment analysis (DEA) method for the reachability problem into a programming problem, change of accessibility of DEA and establish the accessibility model to calculate the city along the high-speed railway, finally analyzes the differences on the effect of different city of high-speed railway.

Analysis of Urban Accessibility of High Speed Railway Based on DEA Index--Taking Wuhan-Guangzhou High Speed Railway as An Example