Drowsy driving

Drowsy driving is a serious cause of motor vehicle collisions. It is estimated that as many as 20% of collisions on highways are due to driver fatigue. Those most at risk for fatigue-related collisions are adults 16-24 years of age and shift workers.

• Driving after 18 hours of being awake is equal to a blood alcohol level just under the legal limit.
• Driving after being awake all night is equal to a blood alcohol level that is considered legally drunk.

Recognize the signs of drowsy driving

• feeling sleepy
• yawning
• head nodding
• eyes drooping or feeling heavy
• eye rubbing
• not paying attention
• missing exits
• drifting out of your lane

What should you do if you feel drowsy behind the wheel?

The only effective way to deal with drowsy driving is to stop driving and sleep. Drinking caffeine and taking a nap can temporarily help you feel more awake, but only for a few hours. The best way to combat drowsy driving is to prevent it. Make sure to get a good night sleep before a long trip and plan ahead for enough break stops, about every 2 to 3 hours.

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This item was last modified on August 6, 2025