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A two-phase algorithm for the partial accessibility constrained vehicle routing problem

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Abstract

In the partial accessibility constrained vehicle routing problem, a route can be covered by two types of vehicles, i.e. truck or truck + trailer. Some customers are accessible by both vehicle types, whereas others solely by trucks. After introducing an integer programming formulation for the problem, we describe a two-phase heuristic method which extends a classical vehicle routing algorithm. Since it is necessary to solve a combinatorial problem that has some similarities with the generalized assignment problem, we propose an enumerative procedure in which bounds are obtained from a Lagrangian relaxation. The routine provides very encouraging results on a set of test problems.

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  1. Centre de recherche sur les transports, Université de Montréal, succ. “Centre-Ville”, C.P. 6128, H3C 3J7, Montréal, Canada

    Frédéric Semet

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  1. Frédéric Semet
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Semet, F. A two-phase algorithm for the partial accessibility constrained vehicle routing problem. Ann Oper Res 61, 45–65 (1995). https://doi.org/10.1007/BF02098281

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  • DOI: https://doi.org/10.1007/BF02098281

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