Chapter 24: Nonresponse Challenges in GPS-Based Surveys: Synthesis of a Workshop

Using GPS to capture observational travel data has increasingly become a viable data-collection approach for transportation organizations. While the technology for person- or vehicle-based passive trip data collection has been around for some time, GPS is a fairly new methodology in the context of travel behavior research. As GPS data collection still relies on various levels of human acceptance and follow-through (e.g., use, installation, data downloads, battery replacement, or charging), GPS data collection provides some unique quality, methods, and logistics challenges, especially when incorporating into large-scale travel behavior studies. The intent of this workshop was to focus on nonresponse challenges, specifically, in the conduct of GPS-based studies.