Driving while drowsy can be as dangerous as driving under the influence of alcohol or drugs. Surveys found that over 60% of Americans report driving while feeling drowsy and over 25% have fallen asleep at the wheel. Each year in the US, around 1500 people die in crashes related to drowsy driving and 40,000 are injured. High-risk groups include young adults, commercial drivers, and shift workers. Drowsiness impairs judgment, reaction time, and awareness behind the wheel.