Ewald & Wasserman Research (E&W) conducted the 2022 California Traffic Safety Public Opinion Study on behalf of the California Office of Traffic Safety (OTS) and the Safe Transportation Research and Education Center of UC Berkeley (SafeTREC). Similar to previous years and since 2020, the data collection transitioned from an intercept survey to an online panel with survey panelists provided by Marketing Services Group, a commercial sample and panel vendor.
Panelists consisted of California drivers who were forwarded to an online survey portal programmed and managed by E&W. The criteria for eligibility included possessing a valid California driver’s license and being 18 years or older. To manage the sample composition and to ensure a similar distribution of age and gender compared to the California census and previous waves of the Traffic Safety Study, quotas by gender and six age group ranges were implemented. Participation was anonymous and no personal data was collected, and a total of 2,768 responses were collected in April of 2022.