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Research & Statistics

Graduated Driver Licensing: A Proven Road to Improved Teen Safety

GDL Symposiums

The National Safety Council hosted international GDL research symposiums in 2002 and 2007 to establish a science-based vision for policy and practices to improve teen driving and current GDL systems.

2002 GDL Symposium Presentations

2007 GDL Symposium Presentations


Journal of Safety Research - GDL & Teen Driving Research Updates

These articles compile research focused on GDL and teen driving:

2007-2010 Research Update

2006 Research Update

2004-2005 Research Update

2003 Research Update


GDL Effectiveness Research

Countermeasures That Work  See the "Young Drivers" section for elements of effective state GDL systems.

Graduated Driver Licensing: Review of Evaluation Results Since 2002  Shope, Journal of Safety Research, 2007. Summarized 21 studies that show GDL systems reduced novice drivers' crash risk by 20-40 percent.

GDL Restrictions Reduce Fatal Crashes for 16-Year-Old Drivers  Baker, Chen & Li, Pediatrics, 2006. GDL systems with at least 5 of 7 components showed a 20 percent reduction in fatal crashes involving 16-year-old drivers.



Model GDL Systems

NSC Policy/Position Statement on Model GDL Systems

GDL Fact Sheets

Information from NSC 2007 GDL Symposium:

Extended Learner's Permit Holding Periods

Nighttime Driving Restrictions

Passenger Restrictions


Key GDL Influencers & Partners

Next Steps: Research, Evaluation & Implementation

New Research & Data

FARS Data Resource Website

NHTSA's National Center for Statistics & Analysis


Recorded Webinar

How can I keep my teen driver safe?  



Family Guide to Teen Driver Safety, 2nd Edition 2009

Print version

Downloadable version

The Family Guide assists families in using effective principles of GDL in their homes to help teens drive safer. It shares the information we learned about teen driving during the GDL Symposiums.


Journal of Safety Research - GDL Special Issues

These special issues include all research papers from the 2007 and 2002 GDL Symposiums.

Volume 38, Issue 2, 2007

Volume 34, Issue 1, 2003



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