We address the applicability of a hybrid quantum-classical heuristics for practical railway rescheduling management problems. We build an integer linear programming model and solve it with D-Wave's quantum-classical hybrid solver (CQM) as well as with CPLEX, for comparison. The proposed approach is demonstrated on a real-life heterogeneous urban network in Poland, including both single- and multi-track segments. All the requirements posed by the operator of the network are included in the model. The computational results demonstrate the readiness for application and the benefits of quantum-classical hybrid solvers in a realistic railway scenario: they yield acceptable solutions on time, which is a critical requirement in a rescheduling situation. In particular, CQM as a probabilistic heuristic solver provides a number of feasible, close-to-optimal solutions the dispatcher can choose from.
Cite
@article{arxiv.2309.06763,
title = {Solving rescheduling problems in heterogeneous urban railway networks using hybrid quantum-classical approach},
author = {Mátyás Koniorczyk and Krzysztof Krawiec and Ludmila Botelho and Nikola Bešinović and Krzysztof Domino},
journal= {arXiv preprint arXiv:2309.06763},
year = {2025}
}