Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/17046
Title: Integrating Equity Objectives in a Road Network Design Model
Authors: Santos, Bruno 
Antunes, António 
Miller, Eric J. 
Keywords: Road Network Design; Equity; Multi-objective Optimization
Issue Date: 2008
Publisher: Transportation Research Board
Citation: SANTOS, Bruno; ANTUNES, António;MILLER, Eric J. - Integrating Equity Objectives in a Road Network Design Model. "Transportation Research Record". ISSN 0361-1981. 2089 (2008) 35-42
Abstract: The traditional approach to the road network design problem focuses on the optimization of network efficiency under a given budget. Generally, this leads to the improvement of roads next to the largest population centers, where travel demand is higher. Such results are not consistent with sustainable development principles, since the dissimilarities between the welfare of large and small centers will tend to increase. Nevertheless, equity issues were rarely taken into account in road network design. Moreover, all existing studies rely on a single equity measure. In this paper equity concerns in transportation planning are reviewed briefly, and a comparison of alternative equity measures is presented. Three equity measures were selected and incorporated into an accessibility-maximization road network design model. The three equity measures reflect different perspectives on equity: accessibility to low-accessibility centers, the dispersion of accessibility values across all centers (Gini coefficient), and the dispersion of accessibility values across all centers and across centers in the same region (Theil index). The implications of adopting each of these equity measures are illustrated through application of the optimization model to three random networks.
URI: http://hdl.handle.net/10316/17046
ISSN: 0361-1981
DOI: 10.3141/2089-05
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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