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Time-declining risk-adjusted social discount rates for transport infrastructure planning

Kathrin Goldmann

No 22, Working Papers from Institute of Transport Economics, University of Muenster

Abstract: This paper proposes a social discount rate for transport infrastructure project evaluation in Germany that accounts for production efficiency, systematic traffic demand risk, as well as increasing uncertainty in the long-run. The systematic risk in infrastructure planning is measured by the sensitivity of transport volume towards GDP using cointegration analysis. In contrast to the only existing application of this model in transport economics, in this paper the systematic risk for freight transport projects is substantially higher than for passenger transport projects. Due to different systematic risk patterns, the discount rates for freight and passenger transport projects should differ as well, with the former being equal to approximately 3.5% and declining to 2.7% after 50 years, and the latter ranging between 2.0% and the risk-free rate of 1.3%. This paper focuses especially on the econometric challenges of the CAPM-like estimation of systematic risk in public transport infrastructure project assessment and is at the same time the first application to German data.

Keywords: Social discount rate; Traffic demand risk; Time series analysis; Infrastructure planning; Â Cost-benefit analysis (search for similar items in EconPapers)
JEL-codes: H43 R42 (search for similar items in EconPapers)
Pages: 20 pages
Date: 2017-04
New Economics Papers: this item is included in nep-ppm and nep-tre
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Citations: View citations in EconPapers (1) Track citations by RSS feed

Forthcoming in Transportation

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http://www.wiwi.uni-muenster.de/ivm/sites/ivm/file ... e/workingpaper22.pdf First version, 2017 (application/pdf)

Related works:
Journal Article: Time-declining risk-adjusted social discount rates for transport infrastructure planning (2019) Downloads
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