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Heuristic solutions to the problem of routing school buses with multiple objectives

Author

Listed:
  • A Corberán

    (Universitat de València)

  • E Fernández

    (Universitat Politècnica de Catalunya)

  • M Laguna

    (University of Colorado)

  • R Martí

    (Universitat de València)

Abstract

In this paper we address the problem of routing school buses in a rural area. We approach this problem with a node routing model with multiple objectives that arise from conflicting viewpoints. From the point of view of cost, it is desirable to minimise the number of buses used to transport students from their homes to school and back. From the point of view of service, it is desirable to minimise the time that a given student spends en route. The current literature deals primarily with single-objective problems and the models with multiple objectives typically employ a weighted function to combine the objectives into a single one. We develop a solution procedure that considers each objective separately and search for a set of efficient solutions instead of a single optimum. Our solution procedure is based on constructing, improving and then combining solutions within the framework of the evolutionary approach known as scatter search. Experimental testing with real data is used to assess the merit of our proposed procedure.

Suggested Citation

  • A Corberán & E Fernández & M Laguna & R Martí, 2002. "Heuristic solutions to the problem of routing school buses with multiple objectives," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 53(4), pages 427-435, April.
    • Handle: RePEc:pal:jorsoc:v:53:y:2002:i:4:d:10.1057_palgrave.jors.2601324
    DOI: 10.1057/palgrave.jors.2601324
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