Rate of fatal crashes involving year - old drivers was 10 % lower in states with restrictions . Strong graduated driver licensing ( GPS ) programs associated with a 50 % increase in fatal crash rates . 7 ways to drive like a pro . GDL programs are now in place in one form or another in all 50 states .
Rate of fatal crashes involving year - old drivers was 10 % lower in states with restrictions . Strong graduated driver licensing ( GPS ) programs associated with a 50 % increase in fatal crash rates . GDL programs are now in place in one form or another in all 50 states .