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The Effects of Trailer Scheduling on the Layout of Freight Terminals

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  • Kevin R. Gue

    (Department of Systems Management, Naval Postgraduate School, Monterey, California 93943)

Abstract

Supervisors in a less-than-truckload freight terminal establish material flows inside the terminal by assigning incoming trailers to open doors. A common scheduling strategy is to look ahead into the queue of incoming trailers and assign them to doors to minimize worker travel. We develop a model of the resulting material flows and use it to construct layouts that exploit this type of scheduling policy. Based on data from a test site, our results suggest that look-ahead scheduling alone can reduce labor costs due to travel by 15–20% compared to a first-come–first-served policy. Layouts constructed with the material flow model provide further savings of 3–30% in labor cost due to travel, depending on the mix of freight on incoming trailers and the length of the queue of trailers from which the supervisor makes assignments.

Suggested Citation

  • Kevin R. Gue, 1999. "The Effects of Trailer Scheduling on the Layout of Freight Terminals," Transportation Science, INFORMS, vol. 33(4), pages 419-428, November.
    • Handle: RePEc:inm:ortrsc:v:33:y:1999:i:4:p:419-428
    DOI: 10.1287/trsc.33.4.419
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