Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31166
Title: Multi-layer network approach for modeling general combined-mode trips
Authors: Wu, ZX
Ye, HS
Sun, M
Lam, WHK 
Keywords: Combined-mode trips
Multi-layer network
Multi-modal network equilibrium
Variational inequality
Issue Date: 2005
Source: Transportation and the economy - Proceedings of the 10th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2005, 2005, p. 268-277 How to cite?
Abstract: This paper describes a multi-layer approach for modeling general combined-mode trips. The model formulation is based on an extended network framework, termed a multi-layer network. Two major problems arising from the specification of a multi-modal network equilibrium model are addressed, i.e. route (or path) enumeration and travel choice in a network with multiple transport modes. It is shown that the multi-layer network approach can facilitate the generation of feasible routes in a multi-modal setting. A feasible route in the multi-layer network is characterized by a combined mode, which indicates the feature of the used modes or mode combinations along the route. All feasible routes between each origin-destination (OD) pair are grouped, according to the combined modes of routes, into four subsets: auto, transit, auto-transit, and pure walking. The travel choice model is given by a nested logit model where the upper level is focused on combined-mode choice while the lower level on route choice. The multi-modal network equilibrium problem is mathematically formulated as a variational inequality (VI) problem. In addition, interactions among various motorized modes sharing the same road space, as well as nonlinear transit fare structures are taken into account in the multi-modal network equilibrium problem.
Description: 10th International Conference of Hong Kong Society for Transportation Studies: Transportation and the Economy, HKSTS 2005, Kowloon, 10 December 2005
URI: http://hdl.handle.net/10397/31166
ISBN: 9889884712
9789889884710
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