Meanwhile, U.S. highways are considered the second-most-dangerous road type, with the most accidents for sleepy drivers taking place between 6 a.m. and 7 a.m.

Most dangerous conditions and vehicles:

Rain, fog, and early dawn light were commonly linked to fatal crashes. Poorly lit roads make drowsy driving even more dangerous.
Larger vehicles—including SUVs, vans, and heavy trucks—were often involved, with rollover risks increasing the chance of fatal outcomes.

"Getting adequate sleep, knowing when to pull over and recognizing the signs of drowsiness can dramatically reduce risk," Riley said. "Just like we have campaigns against drunk driving, we need the same urgency for drowsy driving; it's a public health issue that affects every commuter, traveler, and family on the road."

Tips on how to avoid drowsy driving:

Prioritize sleep: Aim for 7–9 hours before long trips.
Take breaks: Stop every 2 hours or 100 miles.
Avoid peak danger hours: If possible, skip early morning drives after a poor night's rest.
Stay stimulated: Share driving duties, listen to engaging audio, or schedule calls.
Watch for warning signs: Frequent yawning, heavy eyelids, or drifting lanes mean it's time to pull over.
Use rest stops, not willpower: Coffee and energy drinks can only do so much; real rest is the safest solution.

See also:

Special Reports /

Sleepy drivers die most on morning commutes

Related Stories

Recommended For You