 On the income elasticity of the value of travel timeMaria Börjesson, Mogens Fosgerau and Staffan Algers Transportation Research Part A: Policy and Practice, 2012, vol. 46, issue 2, 368-377 Abstract: Transport infrastructure is long-term and in appraisal it is necessary to value travel time savings for future years. This requires knowing how the value of time (VTT) will develop over time as incomes grow. This paper investigates if the cross-sectional income elasticity of the VTT is equal to inter-temporal income elasticity. The study is based on two identical stated choice experiments conducted with a 13year interval. Results indicate that the relationship between income and the VTT in the cross-section has remained unchanged over time. As a consequence, the inter-temporal income elasticity of the VTT can be predicted based on cross-sectional income elasticity. However, the income elasticity of the VTT is not a constant but increases with income. For this reason, the average income elasticity of the VTT in the cross-sections has increased between the two survey years and can be expected to increase further over time. Keywords: Income elasticity; Value of travel time; CBA; Inter-temporal income elasticity; Cross-section income elasticity; Temporal transferability (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:transa:v:46:y:2012:i:2:p:368-377 Ordering information: This journal article can be ordered from DOI: 10.1016/j.tra.2011.10.007 Access Statistics for this article Transportation Research Part A: Policy and Practice is currently edited by John (J.M.) Rose More articles in Transportation Research Part A: Policy and Practice from Elsevier |
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