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Original Articles

Tour splitting algorithms for vehicle routing problems

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Pages 507-535 | Received 01 Sep 2008, Published online: 20 Nov 2008
 

Abstract

Tour splitting heuristics for capacitated vehicle routing problems build one giant tour visiting all customers and split this tour into capacity-feasible vehicle trips. They are seldom used alone because of a reputation of limited performance. This paper describes how to improve them to obtain better solutions or tackle additional constraints. Numerical tests on the capacitated arc routing problem (CARP) and the capacitated vehicle routing problem (CVRP) show that randomized versions outperform classical constructive heuristics. A greedy randomized adaptive search procedure (GRASP) and an iterated local search (ILS) based on these principles even compete with published metaheuristics, while being faster and simpler.

Acknowledgement

This research has been funded by the Champagne-Ardenne Regional Council (France) and the European Social Fund.

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