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Drowsy driving causes more than 100,000 crashes a year, resulting in 40,000 injuries and 1,550 deaths. As tragic as these numbers are, they only tell a portion of the story. It is widely recognized that drowsy driving is underreported as a cause of crashes. And this doesn't include incidents caused by driver inattention. NHTSA's programs to combat drowsy driving employs both educational and technological solutions. Education programs are directed toward specific subpopulations as well as the general driving public.

Assessment of a Drowsy Driver Warning System for Heavy-Vehicle Drivers
Preventing Drowsy Driving Among Shift Workers Program
Drowsy Driving and Automobile Crashes
National Survey of Distracted and Drowsy Driving Attitudes and Behavior: 2002
Development and Testing of Countermeasures for Fatigue Related Highway Crashes