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Article Dans Une Revue Sustainability Année : 2022

Modelling the Returnable Transport Items (RTI) Short-Term Planning Problem

Najoua Lakhmi
  • Fonction : Auteur
Evren Sahin
Yves Dallery
  • Fonction : Auteur

Résumé

Returnable transport items (RTI) are used for the handling and transportation of products in the supply chain. Examples of RTIs include plastic polyboxes, stillages or pallets. We consider a network where RTIs are used by multiple suppliers to deliver parts packed in RTIs to multiple customers. We address the short-term planning of empty-RTI flows (i.e., reverse flows) which consists of optimizing the transportation routes used to return empty RTIs from customers to suppliers. A transportation route consists of one or several trucks traveling from a customer to a supplier at a given frequency. The RTI short-term planning problem is critical because it impacts the continuity of loaded-RTI flows and affects the transportation and shortage costs of empty RTIs incurred at the very-short-term. We study a heterogeneous fleet of automotive parts RTIs, under two configurations: pool RTIs, which are standard RTIs shared between suppliers, and dedicated RTIs that are specific to each supplier. To solve the short-term planning problem, we develop a two-step approach using mixed-integer linear programming (MILP) and a greedy heuristic. For pool RTIs, our models enable a reduction of 30% in the number of trucks used and 20% in the distance traveled. Furthermore, if dedicated and pool RTIs are jointly planned, this would enable a 9% gain in terms of transportation costs.

Dates et versions

hal-04334380 , version 1 (10-12-2023)

Identifiants

Citer

Najoua Lakhmi, Evren Sahin, Yves Dallery. Modelling the Returnable Transport Items (RTI) Short-Term Planning Problem. Sustainability, 2022, 14 (24), pp.16796. ⟨10.3390/su142416796⟩. ⟨hal-04334380⟩
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