Driver fatigue is a leading cause of car accidents, often resulting in severe or fatal crashes. Drowsy drivers make predictable mistakes, such as drifting off the road or even falling asleep behind the wheel.
The average adult requires 7–9 hours of sleep per night, while teenagers need 8–10 hours for optimal cognitive function. Unfortunately, many people operate on 5–6 hours of rest, significantly increasing their risk of an accident. Sleep timing is also critical—those working night shifts may struggle to achieve restorative sleep during the day.
So, how many accidents are caused by fatigue? Research estimates that drowsy driving is a factor in 7% of all car crashes. Below, we break down the alarming statistics.
Fatigue Contributes to 7% of All Accidents
A comprehensive study by the AAA Foundation found that 7% of all crashes requiring vehicle towing involved a drowsy driver—meaning 1 in 14 accidents nationwide. With approximately 4.2 million car accidents annually in the U.S., this translates to around 300,000 fatigue-related crashes each year—or nearly 6,000 per week.
Drowsy Driving Plays a Bigger Role in Fatal Accidents
The risk of fatal crashes is even higher, with 16.5% of deadly accidents involving a fatigued driver—that’s roughly 1 in 6 fatal crashes. Additionally, 13.1% of serious crashes requiring hospitalization were linked to drowsy driving, putting many survivors in intensive care.
Key Findings on Fatigue & Accidents
The AAA Foundation also uncovered these critical insights:
- Men accounted for two-thirds of drowsy driving crashes.
- Over 50% of fatigue-related accidents involved vehicles veering off the road or into another lane.
- Young drivers (16–24 years old) had a higher risk of drowsy driving crashes than those aged 40–59.
- 41% of drivers admitted to nodding off while driving at least once in their life.
Despite knowing the risks, many people drive while fatigued due to demanding work schedules, long commutes, or juggling multiple jobs.
Drugs & Alcohol Exacerbate Fatigue
Even well-rested individuals can become dangerously drowsy if they consume certain substances. Alcohol, prescription medications, and even over-the-counter cold or allergy drugs can increase fatigue and impair driving ability.
There is no safe amount of alcohol before driving. Additionally, marijuana—often mistakenly considered harmless—can slow reaction time and cause impairments similar to alcohol, even in small doses.
Injured in a Drowsy Driving Crash? Contact Us Today
Driving while fatigued is a form of negligence. If you or a loved one suffered injuries in a drowsy driving accident, you may be entitled to financial compensation. Call Pottroff & Karlin, LLC today for a free consultation with an experienced car accident lawyer.
