CALIFORNIA TRAFFIC SAFETY SURVEY 2023 DATA ANALYSIS 6
OVERVIEW OF 2023 STUDY
Similar to the survey waves since 2020, the 2023 California Traffic Safety Public Opinion Study was
conducted by Ewald & Wasserman Research (E&W) on behalf of the California Office of Traffic Safety
(OTS) and the Safe Transportation Research and Education Center of UC Berkeley (SafeTREC), with an
online self-administered survey. Survey panelists were provided through Marketing Services Group, a
commercial sample and panel vendor.
The eligibility criteria for participating in the study were possessing a valid California driver’s license and
being 18 years or older. Eligible respondents were forwarded to an online survey portal programmed
and managed by E&W. 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 groups were implemented.
Participation in the survey was anonymous, and a total of 2,815 responses were collected in April, 2023.
This report describes the findings of the 2023 Traffic Safety Public Opinion Study, along with a
comparison of previous years of data, which include opinions from a representative sample of California
drivers on a range of factors affecting traffic safety.
SURVEY DATA ANALYSIS AND COMPARISON WITH PREVIOUS
YEARS
Since 2020, in light of the COVID-19 pandemic, the data for the survey were
collected using online panels, as compared to the previous waves from
2010 through 2019, which were intercepts with survey respondents. The
intercept surveys, as administered by trained field staff, recorded
responses where the response options were not read to the respondents.
In the online survey format, the response options were all presented to the
respondents. This resulted in a greater number of responses particularly for
the multiple response questions, and very few open-ended responses.
While this facilitated a more direct comparison of results between the
waves since 2020, comparison of the current survey data with the waves
before 2020 should take the difference in modality as well as the impact of
COVID-19 on perception and driving behavior of California drivers into account.
The survey items related to the Safe System approach introduced by the U.S. Department of
Transportation
(https://safety.fhwa.dot.gov/zerodeaths/docs/FHWA_SafeSystem_Brochure_V9_508_200717.pdf), that
were first introduced in 2022, continued to be a part of the survey in 2023 as well. In 2023, questions
about a new safety campaign were also introduced.
In this report, the statistically significant differences between different California regions are highlighted
in the respective region column. Similarly, the statistically significant differences between 2023 and
2022 data are highlighted in the 2023 data column. Every effort has been made to match the 2023
sample with previous waves by age, gender, and geographic region, to minimize the effects of sample
differences between data collection years.