Center for Spatially Integrated Social Science

Using as motivation the recently collected large amounts of GPS data from a variety of transportation studies in the United States and Europe, the Federal Highway Administration (FHWA) funded a Peer Exchange meeting in Santa Barbara, CA (10-11 October 2005). The intent of this Peer Exchange was to assemble experts to discuss potential approaches on using GPS vehicle traces for defining space-time paths and prisms to be used in activity modeling and microsimulation for transportation analysis. This Peer Exchange brought together travel demand forecasters, experts in travel behavior and GPS data collection, and geographers to discuss different approaches to analyzing space-time prisms for transportation forecasting needs. This report documents the discussions and recommendations from the Peer Exchange.