Drivers all trying to get to where they need to go.
But, a new study shows at least a quarter of them may be too tired to be behind the wheel.
It's news that's not really a surprise to many drivers.
"I would definitely say that's accurate from what I've seen on the roadway," says Pennsylvania driver Kelsey Bauer.
Tommy Britt from Mississippi agrees, "I wouldn't doubt it. I wouldn't doubt it because I see a lot of it out here."
"I think that's probably true," says William Bridle, a Pennsylvania driver.
The signs range from the subtle:
"You see occasionally people weaving to the right, or left and not really conscious of what they're doing," says Virginia resident Thomas Morton.
... to the more obvious:
"If you're drowsy, you're all over the road -just like you would be if you're drunk - verve off the road or hit someone," says Britt.
According to the study, drivers 19 to 24 are most likely to report driving drowsy, while older and the very youngest drivers were least likely.
Drivers we spoke with say the best way to keep from drowsy driving is to not get on the road, but if you do:
Suggest Bridle, "Frequent stops helps to get out and walk around."
Adds Morton, "When you feel yourself getting drowsy, you find yourself a resting place - get off, go into a restaurant get something to eat, something to revive your body."
The study found that even though most drivers know driving drowsy is dangerous, nearly half of them do it anyway.