Strengthening GDL Laws

June 2012

States Could Sharply Reduce Teen Crash Deaths by Strengthening GDL Laws, Says IIHS

If every state adopted all five components of the toughest young driver laws in the nation, more than 500 lives could be saved and more than 9,500 collisions could be prevented each year. Some states could halve or more than halve their rate of fatal crashes among 15-17 year-olds if they adopted the strongest graduated driver licensing (GDL) provisions. These are the main findings of a new analysis by the Insurance Institute for Highway Safety and Highway Loss Data Institute (HLDI) meant to encourage states to improve GDL laws. A new online calculator (go to developed by the Institute and HLDI shows individual states the safety gains they could achieve by adopting some or all of the most beneficial GDL provisions in effect today. The five key components are permit age, practice driving hours, license age, and night driving and teen passenger restrictions. For more information, visit