Graduated driver's licensing is a system designed to delay full licensure while allowing beginners to obtain their initial experience under lower risk conditions. The Insurance Institute for Highway Safety has evaluated the licensing systems of all states and the District of Columbia using criteria designed to estimate the strength and likely effectiveness of the systems in reducing injuries. Tables are updated as state laws and regulations change.
- Insurance Institute for Highway Safety (IIHS)
A four-point scale rating state licensure systems from poor to good.
The Institute assigns licensing systems points for the key components of graduated licensing. Good systems scored 6 points or more; fair scored 4 or 5 points; marginal scored 2-3 points and poor scored less than 2 points. Points are assigned for learner's entry age, learner's holding period, practice driving certification, night driving restriction, passenger restriction, driver's education, and duration of restrictions.
IIHS GDL Rating System. Accessed September 5, 2010.