Scheduling Freight Trains in Rail-Rail Transshipment Yards

  • Authors:
  • Nils Boysen;Florian Jaehn;Erwin Pesch

  • Affiliations:
  • Lehrstuhl für Allgemeine Betriebswirtschaftslehre/Operations Management, Friedrich-Schiller-Universität Jena, D-07743 Jena, Germany;Institut für Wirtschaftsinformatik, Universität Siegen, D-57068 Siegen, Germany;Institut für Wirtschaftsinformatik, Universität Siegen, D-57068 Siegen, Germany

  • Venue:
  • Transportation Science
  • Year:
  • 2011

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Abstract

Transshipment yards, where gantry cranes enable the efficient transfer of containers between freight trains, are important entities in modern railway systems. They facilitate a general shift from point-to-point transport to hub-and-spoke railway systems, a shift being driven by concerted efforts within the European Union (EU) to transfer goods traffic from road to rail. Modern rail-rail transshipment yards accelerate container handling so that multiple smaller trains, with identical destinations, can be consolidated onto a reduced number of trains. An important problem attendant upon the daily operations of a transshipment yard is the train-scheduling problem, which involves determining the processing order of trains at parallel railway tracks. The present paper investigates this problem, with a special focus on resolving deadlocks and avoiding multiple crane picks per container move. A mathematical program along with a complexity proof is provided, and two different procedures are described: exact (dynamic programming) and heuristic (beam search).