Abstract
This study addresses the vehicle routing optimization problem with three nested transportation modes, consisting of ships, trucks, and drones. A typical nested-three-mode vehicle routing problem appears in delivery systems that include areas of sparsely scattered, varying-size islands. In the problem, drones play an important role in achieving high efficiency in the entire delivery system, of their high-speed accessibility. In this paper, we present a mathematical model for the problem and explore its potential usability as a heuristic. For the usability check-up, a geographic data set from the island area of Tongyeong in Korea is used in an illustrative scenario for disaster relief goods distribution. Our limited computational experiment shows promise in the proposed optimization model as a heuristic with a preset computation time limit when compared with greedy heuristics.
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