RESEARCH ARTICLE Circuity analyses of HSR network and high- speed train paths in China Xinlei Hu1, Shuo Zhao1, Feng Shi1*, Jie Huang2, Xinghua Shan3 1 School of Traffic and Transportation Engineering, Central South University, Changsha, Hunan, China, 2 Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, 3 Institute of Computing Technologies, China Academy of Railway Sciences, Beijing, China *
[email protected] Abstract a1111111111 Circuity, defined as the ratio of the shortest network distance to the Euclidean distance a1111111111 between one origin±destination (O-D) pair, can be adopted as a helpful evaluation method a1111111111 a1111111111 of indirect degrees of train paths. In this paper, the maximum circuity of the paths of oper- a1111111111 ated trains is set to be the threshold value of the circuity of high-speed train paths. For the shortest paths of any node pairs, if their circuity is not higher than the threshold value, the paths can be regarded as the reasonable paths. With the consideration of a certain relative or absolute error, we cluster the reasonable paths on the basis of their inclusion relationship OPEN ACCESS and the center path of each class represents a passenger transit corridor. We take the high- speed rail (HSR) network in China at the end of 2014 as an example, and obtain 51 passen- Citation: Hu X, Zhao S, Shi F, Huang J, Shan X (2017) Circuity analyses of HSR network and high- ger transit corridors, which are alternative sets of train paths. Furthermore, we analyze the speed train paths in China.