Dynamic vehicle routing problems have received growing attention from researchers as a result of ... more Dynamic vehicle routing problems have received growing attention from researchers as a result of the rapid evolution of information and telecommunication technologies, as well as the advancements in the analysis, optimization and computation techniques. In large urban centers subject to severe and unpredictable traffic congestions, logistics operators frequently tend to allocate an excessive number of tasks to their vehicles, leading to the nonaccomplishment of part of the programmed activities at the end of the daily working periods, a situation resulting into faulty performance standards, and eventually breaking previously assumed service levels with their clients. It is presented in this study a dynamic vehicle routing method in which at least part of the tasks in excess, that may occur in the previously planned route, are transferred to one auxiliary vehicle. This vehicle executes then a dynamic routing formed with the tasks transferred from the regular vehicles. In order to validate the proposed model, a simulation process was used to define the most relevant parameters. Additionally, the results obtained with the dynamic routing model were compared with the classical static routing problem figures. The results obtained with the proposed dynamic model showed a substantial service level improvement.
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Papers by Julio Watanabe