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A new hub location model for network design of wagonload traffic

: Sender, Julia; Clausen, Uwe

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Procedia social and behavioral sciences 20 (2011), pp.90-99
ISSN: 1877-0428
Euro Working Group on Transportation (Meeting) <14, 2011, Poznan>
Mini Euro Conference <26, 2011, Poznan>
European Scientific Conference on Air Transport <1, 2011, Poznan>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IML ()
hub location problems; MIP; network design; optimization; transportation

In this paper, we present a specific hub location problem, which arose from a strategic decision problem for network design of
wagonload traffic in German railway logistics. The strategic objective is to determine the location, size, and function of
formation yards, and the connections between them. These strategic decisions define the network structure and hence, the costs
and efficiency of the network. In this paper, we extend a formulation developed earlier. We also do some preprocessing tests to
reduce the complexity. The resulting IPs are implemented in GAMS and solved with CPLEX for several test data sets.