Minimizing Trailer-on-Flat-Car Costs: A Network Optimization Model

Robert B. Dial
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Robert B. Dial: Volpe National Transportation Systems Center, Cambridge, Massachusetts 02142

Transportation Science, 1994, vol. 28, issue 1, 24-36

Abstract: This paper discusses the mathematical and computational underpinnings of an optimization model that reduces United Parcel Service, Inc.'s trailer-on-flat-car (TOFC) usage costs by $4 million per year. It includes an informal statement of the TOFC problem, an integer linear program (ILP) formulation, and a transformation of this ILP into a pure minimum cost network flow program, whose software implementation provides the TOFC planner with a rich set of practical features.

Date: 1994
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Persistent link: https://EconPapers.repec.org/RePEc:inm:ortrsc:v:28:y:1994:i:1:p:24-36

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