Rate of fatal accidents involving 16-year-old drivers was 26 % lower in states with restrictions . Strong graduated driver licensing ( GDL ) programs associated with a 12 % increase in fatal crash rate . Comment:
Rate of fatal accidents involving 16-year-old drivers was 26 % lower in states with restrictions . Strong graduated driver licensing ( GDL ) programs associated with a 12 % increase in fatal crash rate . GDL programs are now in place in one form or another in all 50 states .