Testing Stated Preference techniques and stated choice design : A methodological study of public transport passengers' valuation of quality

This paper examines stated preference design with regards to developing tests for well functioning SP designs, and the possibility for self-administered SP surveys. Four SP methods are used, including stated choice (SC), Transfer price (TP) and the Frisch method (FM). FM circles in respondents' trade-offs between attributes in sequences of questions.Overlapping tests show good correspondence between individual respondents' preferences and valuations across the methods. Due to less problems with 0 valuations and 0 WTP, FM is found to be superior to TP.Significant benefits are achieved by combining valuation methodologies. Benefits include improved flexibility in design, possibilities for consistency testing, and possibilities for comparing the performance of each individual method.Self-administration of SP surveys functions well and is recommended for future use.