Key research findings

  • Research establishing the safety benefits of a minimum exit age of 18 has not been conducted.
  • Senserrick and Williams (2013), in a review of the GDL and teen driver literature, concluded that blood alcohol concentration (BAC) research suggests a three-year provisional period as important, or at least until age 21, albeit the evaluations have mostly been independent of GDL requirements and relate to declines in alcohol-related crashes.2

2Christie 1996