Improving last-mile delivery in humanitarian logistics by solving a two-echelon routing problem with portering and infrastructure disruptions

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dc.contributor.authorMutlu, Ismail Nurullah
dc.contributor.authorTogrul, Ergul Kisa
dc.contributor.authorKazanc, H. Cansin Uzgoren
dc.contributor.authorKilic, Kaan
dc.contributor.authorSoysal, Mehmet
dc.date.accessioned2026-07-01T11:40:06Z
dc.date.available2026-07-01T11:40:06Z
dc.date.issued2026
dc.departmentDüzce Üniversitesi
dc.description.abstractOver time, catastrophes have increasingly caused significant material and human losses. Effective logistics management in humanitarian aid is crucial to minimizing these impacts. Infrastructure damage from disasters introduces uncertainties that must be considered when routing trucks for relief item delivery. This study proposes a Mixed Integer Programming model for the Two-Echelon Vehicle Routing Problem in Humanitarian Aid Logistics (2E-VRP-HAL) to minimize total travel time. An earthquake scenario in Kartal, Istanbul is used to demonstrate the model's accuracy and applicability while accounting for road closures. A diverse fleet, including trucks and pedestrians, addresses delivery challenges, with handover stations enabling access to unreachable areas. To address larger problem instances, a set partitioning approach is used to cluster demand points, followed by a MIP-based local search heuristic to refine the results. Numerical analysis shows up to 15.83% improvement in medium-sized instances and feasible results for larger cases where the model struggles. These findings highlight the potential of proposed decision support methods.
dc.identifier.doi10.1007/s12597-025-01082-x
dc.identifier.issn0030-3887
dc.identifier.issn0975-0320
dc.identifier.orcid0000-0002-1570-660X
dc.identifier.orcid0000-0002-6277-7064
dc.identifier.orcid0000-0002-5550-2847
dc.identifier.scopus2-s2.0-105027921848
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s12597-025-01082-x
dc.identifier.urihttps://hdl.handle.net/20.500.12684/23639
dc.identifier.wosWOS:001664302400001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer India
dc.relation.ispartofOpsearch
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260623
dc.subject[Keyword Not Available]
dc.titleImproving last-mile delivery in humanitarian logistics by solving a two-echelon routing problem with portering and infrastructure disruptions
dc.typeArticle

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