An estimate of the percentage of individuals who commute by means of carpooling (as defined by either two, three, or four persons per vehicle) in Santa Barbara County on a day to day basis. Findings were based solely on respondents who had replied to a survey created and distributed by Traffic Solutions, a non-profit organization designed to promote carpooling within Santa Barbara County.

Carpooling serves as a vital indication in signifying various aspects of the quality of life in Santa Barbara County. It is directly related to the county's traffic flow, highway and parking expansion, and most importantly, pollution levels. With increased carpooling activity comes a significant reduction in air and noise pollution, traffic congestion, and overall stress factors involved in the commute.

According to the results gathered from surveyed respondents, the carpooling trend has significantly decreased since 1993.
Data not found prior to 1993. In addition 1999 data unavailable.