Table 1 Themes and sub-themes from focus groups and user testing interviews

Feasibility

Usability^{a, b}

Online format^{a, b}

Program format^{a, b}

Acceptability

Study and Program Impressions & Recommendations^{a, b}

Initial reactions to program^b

Program content enhancements^{a, b}

Strategies to curb risky driving behaviors^a

Substance Use/Driving perceptions and Experiences^{a, b}

Perceived Helpfulness of Program^b

Previous education on and experience with risky driving^a

Availability and use of alcohol and cannabis

Beliefs about driving under the influence^{a, b}

Perceived rates of substance use in peers^b

Changes to substance use behaviors and driving^b

Learning/new insights^b