ProjectDRIVE: study protocol for a randomized controlled trial to improve driving practices of high-risk teen drivers with a traffic violation

Table 2 Main outcome measures organized by domain, data source, and assessment time

Domain	Measure	Data source	Time point
Domain	Measure	Data source	BL	1–2	3	6	12
Outcome variables
Risky driving events	Hard braking^a	Technology		×	×	×
Risky driving events	Sudden acceleration^a	Technology		×	×	×
Unsafe driving behaviors	Speeding^a	Technology		×	×	×
	Distracted driving^b	Survey^T		×	×	×
	No seatbelt use^a,b	Technology		×	×	×
Recidivism	No. of citations (in 12 months)^a	Court Data					×
Recidivism	Days from initial to next citation^a	Court Data					×
Parent-teen communication	Frequency	Survey^T,P	×	×	×	×
	Quality	Survey^T,P	×	×	×	×
	Voice-recorded conversation	Recorder^P		×	×	×
Intervention implementation	Engagement with feedback	Web Tracking^a,c,d		×	×	×
	Engagement with training	Web Tracking^a,d/Survey^d		×	×	×
	Evaluation of training delivery	Survey^d		×
Other variables	Demographic characteristics	Survey^T,P	×
	Driving habits questionnaire	Survey^T			×	×
	Parental communication patterns	Survey^T,P	×		×	×

ISSN: 2197-1714