G. de Jong
T. van der Hoorn
- A pilot study into the perception of unreliability of travel times using in-depth interviews
- Journal of Choice Modelling
- Volume | Issue number
- 2 | 1
- Pages (from-to)
- Document type
- Faculty of Economics and Business (FEB)
- Amsterdam Business School Research Institute (ABS-RI)
Transport investments normally reduce travel times, but may also reduce unreliability. Conventional time gains can be evaluated in cost benefit analysis using standard values of time. For valuing reliability gains, however, no standard measures are readily available. The Dutch Ministry of Transport has commissioned a project to design a Stated Preference methodology. Reliability is a complex "academic" concept and it may be difficult to present and explain it to respondents. Therefore, a pilot study using in-depth face-to-face interviews has been carried out, in which various SP choice designs have been presented to the participants to test their understanding of the questions. In the end, we found a "best" design. But still, much care is needed for an acceptable response rate and to prevent illogical and inconsistent responses.
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