Circuity analyses of HSR network and high-speed train paths in China

Circuity, defined as the ratio of the shortest network distance to the Euclidean distance between one origin-destination (O-D) pair, can be adopted as a helpful evaluation method of indirect degrees of train paths. In this paper, the maximum circuity of the paths of operated trains is set to be the...

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Bibliographic Details
Published in:PloS one 2017-09, Vol.12 (9), p.e0176005-e0176005
Main Authors: Hu, Xinlei, Zhao, Shuo, Shi, Feng, Huang, Jie, Shan, Xinghua
Format: Article
Language:English
Subjects:
Airlines
Algorithms
Analysis
Computer and Information Sciences
Design specifications
Earth Sciences
Efficiency
Engineering
Engineering and Technology
High speed rail
High speed trains
Locomotives
Metropolitan areas
Passengers
People and Places
Physical Sciences
Rail transportation
Railroads
Railway construction
Railway networks
Research and Analysis Methods
Roads & highways
Science
Studies
Traffic control
Traffic flow
Transportation corridors
Transportation planning
Travel
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Summary:Circuity, defined as the ratio of the shortest network distance to the Euclidean distance between one origin-destination (O-D) pair, can be adopted as a helpful evaluation method of indirect degrees of train paths. In this paper, the maximum circuity of the paths of operated 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 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 passenger transit corridors, which are alternative sets of train paths. Furthermore, we analyze the circuity distribution of paths of all node pairs in the network. We find that the high circuity of train paths can be decreased with the construction of a high-speed railway line, which indicates that the structure of the HSR network in China tends to be more complete and the HSR network can make the Chinese railway network more efficient.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0176005