It turns out just over 4 percent of drivers, or about one in 24, say they nodded off while driving in the previous month, according to a newly released study by the Centers for Disease Control and Prevention.
It surveyed nearly 150,000 people in 19 states and Washington, D.C. by telephone in 2009 and 2010.
The study says research models estimate 15-33 percent of fatal crashes may involve sleepy driving. That’s as many as one out of every three deadly crashes.
According to the CDC, deaths and injuries are more likely in crashes that involve drowsy driving compared to non-drowsy driving crashes.