Khosro Pichka - Industrial Engineering Department, University of Tafresh Tafresh, Iran
Amin Ziaeifar - School of Industrial Engineering, University of Tehran Tehran, Iran
Behzad Ashjari - Industrial Engineering Department, University of Tafresh Tafresh, Iran

This paper presents a new mixed-integer linear programming model for an open vehicle routing problem with multiple depots (MDOVRP) with limited number of vehicles. MDOVRP is a variant of classical VRP, but seeks to find a set of non-depot returning vehicle routes dispatching form several depots. In spite of the large amount of research on VRPs, the MDOVRP has received very little attention from the researchers. The proposed MILP model is encoded in LINGO11 software and randomly generated small size MDOVRPs are solved for validation and verification of the proposed model.

Distribution network; Multi-depot; Open vehicle routing;