Development of a GPS/web-based prompted-recall solution for longitudinal travel surveys

This paper details the development of a GPS collection solution for a longitudinal (twelve week) survey of driving behaviour in Sydney, the primary purpose of which is to investigate behavioral responses to variable rate charging regimes. The study calls for data to be regularly (wirelessly) transmitted to check the quality of data as it is being collected and provide the basis for a web-based prompted recall (PR) survey in which participants can view their trips, confirm details and provide information on who was driving, number of passengers and trip purpose. Following details of the technological setup, details are provided of the data processing issues involved and the development of the PR survey. Pilot testing of the approach on thirty motorists demonstrates that contrary to popular belief, data of this nature can be collected for several weeks with little respondent burden at high levels of accuracy.