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Comprehensive Transportation Projects

San Diego Regional Transportation Study

LogoThe San Diego Regional Transportation Study (formerly the Regional Household Travel Survey) was conducted in 2016-2017 to gather detailed information about local travel activities. Last completed in 2006, the study examines when and where people travel; whether they drive alone, carpool or vanpool, walk, bike, or use public transit; and their travel costs. This information is vital for state and local planning agencies to understand how growth, development, and other changes across the region impact our transportation system, and to plan for future transportation improvements.

More than 275,000 households throughout the San Diego region - representing approximately one in four households - were randomly selected and invited to participate in the study. Nearly 6,200 households completed the study and most participants used a smartphone app to answer questions about their daily travel behavior. Participants who did not own smartphones completed the study online or by phone.