Beginning in 2005, an evaluation was undertaken of a
TravelSmart intervention in South Australia. The evaluation
was undertaken using a panel of households, members of
which were asked to carry GPS devices with them for a
number of days. The panel comprised 200 households, and
only household members over the age of 14 were asked to
carry the GPS devices. This paper reports on the three
waves of panel measurement that took place in 2005-2007.
It documents the successes and failures of the panel survey,
and describes the results, which indicate a substantial
decrease in car use and some potential decrease in car
ownership among households that participated in
TravelSmart, compared to those that did not.