Multi-period line planning with resource transfers
Şahin, Güvenç and Ahmadi Digehsara, Amin and Borndörfer, Ralf and Schlechte, Thomas (2020) Multi-period line planning with resource transfers. Transportation Research Part C: Emerging Technologies . ISSN 0968-090X Published Online First http://dx.doi.org/10.1016/j.trc.2020.102726
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Official URL: http://dx.doi.org/10.1016/j.trc.2020.102726
Urban transportation systems are subject to a high level of variation and fluctuation in demand over the day. When this variation and fluctuation are observed in both time and space, it is crucial to develop line plans that are responsive to demand. A multi-period line planning approach that considers a changing demand during the planning horizon is proposed. If such systems are also subject to limitations of resources, a dynamic transfer of resources from one line to another throughout the planning horizon should also be considered. A mathematical modelling framework is developed to solve the line planning problem with a cost-oriented approach considering transfer of resources during a finite length planning horizon of multiple periods. We use real-life public transportation network data for our computational results. We analyze whether or not multi-period solutions outperform single period solutions in terms of feasibility and relevant costs. The importance of demand variation on multi-period solutions is investigated. We evaluate the impact of resource transfer constraints on the effectiveness of solutions. We also study the effect of period lengths along with the problem parameters that are significant for and sensitive to the optimality of solutions.
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