NEW YORK (CBSNewYork) — Drowsy driving causes eight times more accidents than previously thought, according to a new study from AAA.

According to federal statistics, drowsy driving causes 1 to 2 percent of accidents but AAA mounted dashboard cameras in more than 3,500 vehicles and determined approximately 10 percent of crashes were attributable to sleepiness.

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One driver who leaves for work at 3:30 a.m. said he sometimes gets sleepy and pulls over right away. 

“I come from Waterbury, there’s a stop in Danbury I would stop at. There’s a truck stop on 684 I usually stop at,” the driver said.

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“Driving is pretty boring and traffic will wear you out,” one long-haul trucker said. 

According to AAA, if you miss two to three hours of sleep you more than quadruple your chances for an accident.

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AAA says coffee, rolling down the windows and singing out loud won’t keep you awake. Drivers are urged to get the recommended seven to eight hours of sleep a night.