Accessibility impact of the present and future high-speed rail network: A case study of Jiangsu Province,China |
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Institution: | 1. Department of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu Province 210023, PR China;2. Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing, Jiangsu Province 210023, PR China;3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, Jiangsu Province 210023, PR China;4. Department of Geography Science, Nanjing Normal University, Nanjing, Jiangsu province 210097, PR China;1. Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong, China;2. Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Hong Kong, China;3. Department of Economics, The Chinese University of Hong Kong, Hong Kong, China |
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Abstract: | The large-scale implementation of a high-speed rail (HSR) network is often considered to have a significant effect on the spatial distribution of accessibility. In China, the development of HSR network has progressed rapidly since the first line commenced operation in 2008. As an important component of this network, Jiangsu province proposed an ambitious HSR construction program which planned to cover over 95% of its counties by 2030. Reduced travel time for passengers is one of the most important effects of HSR, and therefore this study aims to analyze the accessibility impact of the evolving HSR network in Jiangsu province from 2010–2030. A layered cost distance method, based on a door-to-door approach, is proposed to evaluate the present and future accessibility at a more detailed geographical level. The results demonstrate that, with the gradual development of the HSR network, accessibility levels across the province will be improved by about 9.6%, and the distribution of the gains will be uneven since the most significant improvements will occur in the more peripheral areas. The inequality in regional accessibility will decrease by an average of 25.7%, which will produce a more homogeneous accessibility landscape. In addition, several policy measures are suggested in order to further enhance the competitiveness of the HSR network in the transport market at a regional level. This extended period of exploratory and detailed analysis is expected to facilitate proactive public policy decisions related to improving the transport network. |
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