2006 Household Activity Survey

A travel survey of 4,700 households and their travel behaviors aimed at understanding why people make the transportation choices they do.

1999 Puget Sound Household Travel Survey

A travel survey of 6,000 households aimed at providing a better understanding of travel behavior in the Puget Sound region.

Puget Sound Transportation Panel Survey

A longitudinal panel survey of travel behavior, conducted in 10 waves between 1989 and 2002.

Traffic Choices Study

Federally-funded pilot that tested new ways to combat traffic congestion and fund transportation.