Retrieved from Vol. 27, No. 1, 2023
Pages 295 -308
Received 09.11.2022
Revised 15.03.2023
Accepted 30.03.2023
Retrieved from Vol. 27, No. 1, 2023
Pages 295 -308
Abstract
Possible variants of work and rest regimes of truck drivers on international traffic have been analyzed. A model for the optimization of the fleet operation plan has been developed. This model is two-level, that is, the general graph contains subgraphs that are designed with incompatible vertices to determine the active and shortest time schedule, unlike known optimization methods. Each of the subgraphs displays an alternative route and truck schedule. The model also contains constraints on the total cycle time and the active period of availability of unloading points, so-called time windows. Integer binary variables are applied to transform the initial graph into a cycle-free graph. Integer programming with a guaranteed optimal solution is used to find the shortest schedule. The obtained results are valid and comply with the rules of the European Agreement. They indicate that choosing the best schedule for an individual car on a single route is not the best decision for the entire fleet and the entire order flow.
Keywords:
drivers' work mode; routing; work schedule