Behind the Wheel (BTW) Smartphone Application

Inclusion criteria: * Teen participants must be between the ages of 15.5-17 years old at the time of enrollment * Participants must have one parent and/or legal guardian who agrees to participate in the study. * Participants' parents must possess car insurance with at least state-minimum coverage. * Participants must be willing to fulfill the minimum requirements of the Ohio GDL system. * Driver must complete a driver education class at a licensed driver training school with 24 hours of classroom or online instruction and 8 hours of driving time; driver must complete 50 hours of driving with at least 10 hours of night driving; driver must hold the permit for at least 6 months. * Participants must have a functioning smartphone and active smartphone account compatible for the BTW app. * To prevent any interference from another driving-related study, participants must agree not to enroll in other driving-related research/driving performance app during the study period. * Participants must be willing to be randomized and comply with study requirements. * Participants must speak and read English. * Participants must be a US citizen or have permanent resident status. Exclusion criteria: \- Drivers younger than 15.5 will be excluded because Ohio does not issue a temporary instruction driving permit identification card (i.e., learner's driving permit) starting the GDL process until age 15.5.