A one-way Vehicle Sharing System (VSS) is strongly linked to the street network which provides not only the conditions of travel and of terminal access but also modal alternatives. Thus the system demand and especially the origin-destination pattern of flow between the VSS stations stems from the multimodal conditions and the multimodal travel demand. A three-layer framework is introduced to model a VSS in a multimodal setting, involving (1) a local station model that is a simple, Markovian system of double-ended capacitated queue, (2) a parking model taken from Leurent (2012) for customers alighting from the VSS mode with eventual cruising for parking, (3) hyperpath choice on the multimodal network. 'Availability hyperpaths' (AP) make the ex-ante travel options, from which stem the ex-post paths possibly with local adaptations due to cruising for parking. In an AP, local path bundling may arise from the probability of availability of a vehicle at a station for boarding. System state and traffic equilibrium are addressed in a static setting. The existence of equilibrium is demonstrated and a Method of Successive Algorithm is provided as computation method. A stylized instance is dealt with for numerical illustration.
Travel demand for a one-way vehicle sharing system: A model of traffic assignment to a multimodal network with supply-demand equilibrium
2013
12 Seiten, Bilder, 5 Quellen
Conference paper
English
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