The appraisal of highway investments under fixed and variable demand

Williams, H. C.W.L. and Moore, L. A.R. (1990) The appraisal of highway investments under fixed and variable demand. Journal of Transport Economics and Policy, 24(1), pp. 61-81.

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A single mode equilibrium model of a transport system is used to investigate the difference between user benefits arising from highway policies when computed under fixed and variable demand, the latter allowing for traffic generated by a project. The dependence of this difference on: the demand elasticity; the initial level of congestion; the variation of user costs with traffic flow; and the policy itself, is explored both analytically and numerically. The central focus of the investigation is the extent to which the benefit to generated traffic is outweighed by the disbenefit inflicted on existing road users through increased congestion. The implication of the results for road appraisal are assessed.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Moore, Professor Laurence
Authors: Williams, H. C.W.L., and Moore, L. A.R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > MRC/CSO SPHSU
Journal Name:Journal of Transport Economics and Policy
Publisher:University of Bath
ISSN (Online):1754-5951

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