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The fleet size and mix dial-a-ride problem with reconfigurable vehicle capacity

Abstract : This paper introduces a fleet size and mix dial-a-ride problem with multiple passenger types and a heterogeneous fleet of reconfigurable vehicles. In this new variant of the dial-a-ride problem, en-route modifications of the vehicle’s inner configuration are allowed. The main consequence is that the vehicle capacity is defined by a set of configurations and the choice of vehicle configuration is associated with binary decision variables. The problem is modeled as a mixed-integer program derived from the model of the heterogeneous dial-a-ride problem. Vehicle reconfiguration is a lever to efficiently reduce transportation costs, but the number of passengers and vehicle fleet setting make this problem intractable for exact solution methods. A large neighborhood search metaheuristic combined with a set covering component with a reactive mechanism to automatically adjust its parameters is therefore proposed. The resulting framework is evaluated against benchmarks from the literature, used for similar routing problems. It is also applied to a real case, in the context of the transportation of disabled children from their home to medical centers in the city of Lyon, France.
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https://hal.archives-ouvertes.fr/hal-01768291
Contributor : Fabien Lehuédé <>
Submitted on : Tuesday, April 17, 2018 - 10:21:46 AM
Last modification on : Thursday, February 27, 2020 - 1:05:34 AM

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Oscar Tellez, Samuel Vercraene, Fabien Lehuédé, Olivier Péton, Thibaud Monteiro. The fleet size and mix dial-a-ride problem with reconfigurable vehicle capacity. Transportation research. Part C, Emerging technologies, Elsevier, 2018, 91, pp.99-123. ⟨10.1016/j.trc.2018.03.020⟩. ⟨hal-01768291⟩

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