History and current status of state graduated driver licensing (GDL) laws in the United States
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Since 1996, all U.S. states have implemented one or more key elements of graduated driving licensing (GDL).

All but seven states have upgraded their original GDL laws, but upgrades slowed in recent years.

Few states weakened their laws, usually in minor ways.

Additional upgrades would result in substantial reductions in teen driver crashes.

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