A new study shows drowsy driving causes more than 5,500 traffic deaths each year. It's a factor in nearly 17 percent of all fatal crashes, according to study by the AAA Foundation for Traffic Safety of the National Highway Traffic Safety Administration.
Forty-one percent of those surveyed admit to falling asleep at the wheel.
Back in 1994, drowsy driving was a factor in only 3.6 percent of fatal crashes.
