Abstract This article examines the empirical issues associated with the use of revealed mode choice preferences for estimating the values of savings in non-working travel time. It examines them under three main headings: the selection of an appropriate sample whose current behaviour represents a genuine choice over other rejected alternatives; mechanisms for defining the true (i.e. feasible) alternative the respondent has rejected; and methods of measuring the attributes of usual and alternative travel modes. It concludes that there are strong reasons for believing that accepted methods of selecting a sample include a significant number of non-choosers who are not revealing any implicit travel time preferences. This may bias the estimated value of travel time. It also concludes, at least for the sample analysed in the article, that the specified alternative was basically infeasible. The implication is that respondents may not be able to specify a realistic one until they have used it for some time. The final section, which examines questions of measurement, concludes that perceptual bias, which influences respondents' perception of time durations, may also be important. The overall conclusion is that the value of travel time estimated from revealed mode choice preferences, is highly suspect.
Valuing savings in non working travel time: The empirical dilemma
Transportation Research Part A: General ; 17 , 1 ; 13-23
20.02.1982
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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