The travel data were collected in Fall of 2011 (with funding from the University of California and the Lincoln Institute of Land Policy) and in Fall of 2012 (with Haynes Foundation funding). These data
allowed us to examine a broad set of travel behavior variables. In Fall of 2011, 284 households recorded their travel for a 7-‐day study period. The survey instruments included a 7-‐day trip log for all persons in the household aged 12 years and older, and vehicle odometer logs for all household vehicles. Of those
284 households, 204 completed the same survey and 7-‐day travel log protocol in Fall, 2012, after the Expo Line opened. From those data, we can study changes in the following travel variables, all expressed as household daily averages:
• Vehicle Miles Traveled
• Car Driver Trips
• Train Transit Trips
• Bus Transit Trips
• Walking Trips
• Bicycle Trips
• Walking Minutes
• Bicycling Minutes
Additionally, we used an emission model to calculate household GHG emissions from vehicle travel, allowing a comparison of vehicle GHG emissions before and after the Expo Line opened, using the panel of 204 households who completed both study waves. We also measured physical activity among a subset of 93 study subjects who carried an accelerometer for the 7-‐day tracking period, allowing a before-‐after comparison of physical activity changes in a subset of subjects in the experimental and control areas.