A study on some urban bus transport networks

被引:87
作者
Chen, Yong-Zhou [1 ]
Li, Nan
He, Da-Ren
机构
[1] Nanjing Univ Aeronaut & Astronaut, Coll Econ & Management, Nanjing 210016, Peoples R China
[2] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1016/j.physa.2006.10.071
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper, we present the empirical investigation results on the urban bus transport networks (BTNs) of four major cities in China. In BTN, nodes are bus stops. Two nodes are connected by all edge when the stops are serviced by a common bus route. The empirical results show that the degree distributions of BTNs take exponential function forms. Other two statistical properties of BTNs are also considered, and they are suggested as the distributions of so-called "the number of stops in a bus route" (represented by S) and "the number of bus routes a stop joins" (by R). The distributions of R also show exponential function forms, while the distributions of S follow asymmetric, unimodal functions. To explain these empirical results and attempt to simulate a possible evolution process of BTN, we introduce a model by which the analytic and numerical result obtained agrees well with the empirical facts. Finally, we also discuss some other possible evolution cases, where the degree distribution shows a power law or an interpolation between the power law and the exponential decay. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:747 / 754
页数:8
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