Economies of Scope of “Hub and Spoke” Transportation Network

Journal of Transportation Systems Engineering and Information Technology ›› 2009, Vol. 9 ›› Issue (1): 24-27 .

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Economies of Scope of “Hub and Spoke” Transportation Network

YAO Zhi-gang ^a;ZHOU Wei ^b;WANG Yuan-qing ^b

a.School of Economics and Management; b. School of Highway, Chang’an University, Xi’an 710061,China.

Received:2008-06-18 Revised:2008-09-23 Online:2009-02-25 Published:2009-02-25
Contact: YAO Zhi-gang

“轴-幅”式运输网络的范围经济问题

姚志刚^{* a};周伟^b;王元庆^b

长安大学 a.经济与管理学院；b.公路学院，西安 710064

通讯作者: 姚志刚
作者简介:姚志刚（1974-），男，陕西省澄城县人，讲师，博士.
基金资助:
高等学校博士学科点专项科研基金项目（20050710006）

Abstract

Abstract: To testify that economics of scope is independent of economies of density in “hub and spoke” transportation network, two cost functions are formulated based on two kinds of route structures: separate two nodes system and hub-spoke system with constant returns to density. The calculation of the transportation cost of the two kinds of route structures in the same transportation network reveals that different route structures have very different transportation cost. Only optimal route structures of “hub and spoke” transportation network could provide economics of scope for the expansion progress because of the acquisition of the highest vehicle and staff operational efficiency from aggregated flow of “hub and spoke” transportation network. The results indicate that economics of scope can be obtained in “hub and spoke” transportation network with optimal route structures when the “hub and spoke” transportation network has constant returns to density.

Key words: Transportation Economy, Economics of Scope, “Hub and Spoke&rdquo, Transportation Network, Economics of Density.

摘要： 为证明“轴-幅”式运输网络有独立于密度经济而存在的范围经济，在假设运输网络密度收益不变的前提下建立了独立分段运营与整合运营两种模式下运输网络的成本函数，对比发现采用独立分段运营与“轴-幅”式整合运营两种模式的运输网络运营成本差异较大，当采用“轴-幅”式整合运营模式且运输网络达到最佳运营结构时才能实现范围经济，其原因在于采用“轴-幅”式整合运营模式进行运营线路整合优化时能使营运车辆及人员工作效率得到提高。结果表明，密度收益恒定时“轴-幅”式网络运营模式下存在范围经济，但范围经济的取得需通过运营线路结构优化才能实现。

关键词: 运输经济, 范围经济, &ldquo, 轴-幅&rdquo, 式运输网络, 密度经济

CLC Number:

F540

YAO Zhi-gang,ZHOU Wei,WANG Yuan-qing . Economies of Scope of “Hub and Spoke” Transportation Network[J]. Journal of Transportation Systems Engineering and Information Technology, 2009, 9(1): 24-27 .

姚志刚,周伟,王元庆. “轴-幅”式运输网络的范围经济问题[J]. 交通运输系统工程与信息, 2009, 9(1): 24-27 .

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Economies of Scope of “Hub and Spoke” Transportation Network

“轴-幅”式运输网络的范围经济问题

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