Date: Thursday, April 19, 2012
The rapid assimilation of smartphones with built-in GPS and accelerometers has presented an opportunity for major changes in conducting travel surveys. GPS or combinations with other location-based technologies such as Wi-Fi, cell tower triangulation, and Bluetooth offer opportunities to experiment with approaches to collect travel and activity behavior over longer periods of time, to combine these data with attitudinal or stated preference surveys, and to use measured behavior as a feedback mechanism for influencing behavior. Some recent approaches have included passive data collection combined with prompted web-response, with inferred travel mode and trip purpose. Another approach has been to design an active data collection where respondents enter information for each trip or based on a "random moments" approach.
Sandra Rodriguez, PTV NuStats
Joan Walker, UC Berkeley
Jerry Jariyasunant, UC Berkeley
Cy Smith, AirSage