SCOPE AND POTENTIAL OF INTERACTIVE STATED RESPONSE DATA COLLECTION METHODS

Abstract

The scope of the growing number of interactive data collection methods directed at transport user response in future situations is reviewed. A brief introduction is given to the application of these methods under both the utility-maximization framework and a series of alternative assumptions about travel choice proposed by Garling. It is suggested that the term most used in this domain of transport surveys, stated preference (SP), should be reserved for a particular subset of a diverse body of techniques that deserve a new nomenclature under the general term stated response (SR). A taxonomy of four classes of SR approaches according to whether constraints or behavioral outcomes (or both) are predefined rather than elicited in the survey designs is presented. In view of the considerable existing literature on conventional SP, the discussion focuses mostly on the other SR approaches. Examples of these approaches are given from travel survey research, as well as some broad guidelines for the selection of techniques and some directions for further research.

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