Teenagers have a dismal car accident fatality rate—more than a third of deaths for 13- to 19-year-olds are due to motor vehicle crashes.
To lower the fatality rate, almost all states, including Minnesota, have put graduated driver licensing (GDL) in place.
Young drivers must move from learner’s permit to intermediate license to full licensure. The policy reduced the number of accidents involving teenage drivers, but no one knew why. SPH assistant professor Pinar Karaca-Mandic decided to look for the answer.