Journal
INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS
Volume 90, Issue 3, Pages 403-419Publisher
ELSEVIER
DOI: 10.1016/j.ijpe.2003.12.002
Keywords
transportation networks; line haul structure; pickup and delivery structure; parcel service network; LTL transports
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The paper describes why optimal design of depot and hub transportation networks for parcel service providers makes it necessary to develop a generalized hub location and vehicle routing model (VRM). Analogous problems occur for postal, parcel and piece goods service providers. A generalized hub location and VRM is developed which encompasses the determination of the number, locations of hubs and depots and their assigned service areas as well as the routes between the demand points and consolidation points (depots, hubs). Because this task leads to a very complex transport design problem, a heuristic solution concept has to be developed. The applicability to a case study is demonstrated; the case of completely new system configuration for Austria is considered. Management must simultaneously decide the number, location, service areas and routes from demand points to depots and vice versa (the pickup and delivery structure) as well as the number and locations of hubs and the routes of depot-hub and hub-hub transports (the hub location or line haul structure), The developed management support decision model leads for real cases to a tremendous number of some million binary variables as well as continuous variables and million of constraints. (C) 2004 Elsevier B.V. All rights reserved.
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