TY - JOUR SN - 0377-2217 AU - Goel, Asvin AU - Gruhn, Volker T1 - A General Vehicle Routing Problem JF - European Journal of Operational Research SP - 650 EP - 660 IS - 3 VL - 191 PY - 2008 KW - Delivery Problem KW - Large Neighbourhood Search KW - Pickup KW - Variable Neighbourhood Search KW - Vehicle Routing Problem AB - In this paper, we study a rich vehicle routing problem incorporating various complexities found in real-life applications. The General Vehicle Routing Problem (GVRP) is a combined load acceptance and generalised vehicle routing problem. Among the real-life requirements are time window restrictions, a heterogeneous vehicle fleet with different travel times, travel costs and capacity, multi-dimensional capacity constraints, order/vehicle compatibility constraints, orders with multiple pickup, delivery and service locations, different start and end locations for vehicles, and route restrictions for vehicles. The GVRP is highly constrained and the search space is likely to contain many solutions such that it is impossible to go from one solution to another using a single neighbourhood structure. Therefore, we propose iterative improvement approaches based on the idea of changing the neighbourhood structure during the search. DO - 10.1016/j.ejor.2006.12.065 M4 - Citavi ER -