Variability in day-to-day travel: analysis of a 28-day GPS survey

As part of a pilot test of the use of geographic positioning systems (GPS) as a tool for evaluating voluntary travel behaviour change (VTBC) strategies, ITLS set up a panel of approximately 50 households. Persons in the panel households who were over 14 years old have been asked to carry GPS devices with them for a period of 28 days. At this time, two waves of the panel have been conducted, although analysis has only been performed on the data of one wave, which is the subject of this paper. While the principal interests for the pilot survey relate to the use of the GPS panels as an evaluation tool, this paper concentrates on looking at what we can learn about the variability in day-to-day travel. (a) For the covering entry of this conference, please see ITRD abstract no. E214666.