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The influence of interview location on the value of travel time savings

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  • Thor-Erik Hanssen

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    Abstract

    The value of travel time savings (VTTS) is used as input in traffic forecasting models and cost-benefit analyses, and it is typically estimated in stated choice studies in which preferences are derived. However, preferences are affected by the recollection of prior experience, and evidence suggests that the recollection of an event is different than the actual experience. Although the choice of interview location is likely to affect how long it has been since the respondents travelled, evidence is somewhat limited on the influence of interview location on VTTS. This paper investigates the role that interview location plays in the VTTS of ferry travellers. We find that the mean value of headway time savings is significantly higher among respondents interviewed onboard ferries than among those interviewed at home. The mean value of onboard time savings is significantly lower among those interviewed onboard the ferries than among those interviewed at home. Failure to take into account the influence of interview location might lead to biased estimates. To the extent that such biased estimates are used in cost-benefit analyses, this bias will affect the calculated welfare effects of changes in frequency and speed on scheduled passenger transport, resulting in suboptimal allocation of public resources. Copyright Springer Science+Business Media, LLC. 2012

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    File URL: http://hdl.handle.net/10.1007/s11116-011-9378-1
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    Bibliographic Info

    Article provided by Springer in its journal Transportation.

    Volume (Year): 39 (2012)
    Issue (Month): 6 (November)
    Pages: 1133-1145

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    Handle: RePEc:kap:transp:v:39:y:2012:i:6:p:1133-1145

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    Web page: http://www.springerlink.com/link.asp?id=103007

    Related research

    Keywords: Value of travel time savings; Value of headway time savings; Value of onboard time savings; Headway; Stated choice; Interview location; Bias;

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    1. Hensher, David A. & Goodwin, Phil, 2004. "Using values of travel time savings for toll roads: avoiding some common errors," Transport Policy, Elsevier, vol. 11(2), pages 171-181, April.
    2. David A. Hensher, 2004. "Identifying the Influence of Stated Choice Design Dimensionality on Willingness to Pay for Travel Time Savings," Journal of Transport Economics and Policy, London School of Economics and University of Bath, vol. 38(3), pages 425-446, September.
    3. Fosgerau, Mogens, 2006. "Investigating the distribution of the value of travel time savings," Transportation Research Part B: Methodological, Elsevier, vol. 40(8), pages 688-707, September.
    4. Glick, Peter, 2009. "How reliable are surveys of client satisfaction with healthcare services? Evidence from matched facility and household data in Madagascar," Social Science & Medicine, Elsevier, vol. 68(2), pages 368-379, January.
    5. Luca Zamparini & Aura Reggiani, 2007. "Meta-Analysis and the Value of Travel Time Savings: A Transatlantic Perspective in Passenger Transport," Networks and Spatial Economics, Springer, vol. 7(4), pages 377-396, December.
    6. L McDowell, 1998. "Elites in the City of London: some methodological considerations," Environment and Planning A, Pion Ltd, London, vol. 30(12), pages 2133-2146, December.
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    8. Wardman, Mark, 2004. "Public transport values of time," Transport Policy, Elsevier, vol. 11(4), pages 363-377, October.
    9. DeShazo, J. R. & Fermo, German, 2002. "Designing Choice Sets for Stated Preference Methods: The Effects of Complexity on Choice Consistency," Journal of Environmental Economics and Management, Elsevier, vol. 44(1), pages 123-143, July.
    10. Hensher, David A., 2008. "Influence of vehicle occupancy on the valuation of car driver's travel time savings: Identifying important behavioural segments," Transportation Research Part A: Policy and Practice, Elsevier, vol. 42(1), pages 67-76, January.
    11. Caussade, Sebastián & Ortúzar, Juan de Dios & Rizzi, Luis I. & Hensher, David A., 2005. "Assessing the influence of design dimensions on stated choice experiment estimates," Transportation Research Part B: Methodological, Elsevier, vol. 39(7), pages 621-640, August.
    12. Arentze, Theo & Borgers, Aloys & Timmermans, Harry & DelMistro, Romano, 2003. "Transport stated choice responses: effects of task complexity, presentation format and literacy," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 39(3), pages 229-244, May.
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