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Equitable Network Design

Connors, RD, Sumalee, A and Watling, DP (2005) Equitable Network Design. Journal of the Eastern Asia Society for Transportation Studies, 6. 1382 - 1397. ISSN 1341-8521


The Network Design Problem (NDP) refers to the optimization problem faced by a planner whose aim is to improve a transport network, drawing on limited resources. Though the NDP may lead to, for example, a set of tolls that maximise social welfare, often no consideration is made of the distribution of resulting benefits and costs across the population of travellers. We consider a network under probit stochastic user equilibrium (SUE) with elastic demand, disaggregated into multiple user classes with different values of time and link-specific tolls. We propose the Theil measure for quantifying equity, which can be incorporated either into the objective function or the constraints within the NDP. A sensitivity analysis of the SUE flows provides the basis for computing the Jacobian of the social welfare function and of the Theil measure. This allows gradient-based optimisation algorithms to be used in solving the NDP. Numerical examples are reported.

Item Type: Article
Keywords: Equitable Network Design
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) > ITS: Spatial Modelling and Dynamics (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 26 Jan 2012 12:40
Last Modified: 14 Sep 2015 13:19
Published Version: http://www.easts.info/on-line/journal_06/1382.pdf
Status: Published
Publisher: Eastern Asia Society for Transportation Studies
URI: http://eprints.whiterose.ac.uk/id/eprint/43676

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