Night driving is much more difficult than day driving for all drivers. Visability is reduced, the glare of oncoming headlights can be blinding, and drivers are usually more tired at night.
Night is also the time most drunk drivers are on the road.
Curfews have always been a cause for disagreement between teens and parents. Any curfew seems too early, especially when friends always seem to stay out later. But for parents who stay up waiting and worrying, most curfews seem too late. Agreeing on a reasonable time to be home takes much discussion and compromise on the part of both parents and teens. Cities that have imposed curfews on teenagers have seen total crashes reduced by 23 percent.