Are there warning signs you're too drowsy to drive safely?
National sleep organizations recommend that healthy adults get seven to nine hours of sleep each night.
However, by sacrificing sleep, these people have an elevated risk of getting involved in a vehicle accident.
It makes sense that sleepy drivers' performance would be impaired, Tefft said.
Not surprisingly, the less sleep, the higher the risk of a crash.
Traffic safety officials regularly warn us of the risks of driving while drunk or distracted. Last year, a total of 35,092 people died in auto accidents in the U.S, according to data from the National Highway Traffic Safety Administration. A driver getting only five to six hours of sleep, when compared to the recommended seven hours, doubles their chance of getting in a crash.
Missing between two to three hours of sleep quadrupled the risk of crashing and had the same effect as driving over the legal drink-drive limit.
A separate AAA study has found that about a fifth of fatal US traffic accidents involve a sleep-deprived driver.
The Company Behind the Dakota Access Pipeline Responds to Rerouting Celebrations
It was unclear if protesters would heed Archambault's call to leave the Oceti Sakowin camp in Cannon Ball, North Dakota. The camp celebrated the decision , but some expressed concern their victory could be short-lived.
Those who had slept six to seven hours had 1.3 times the crash risk as those who had slept at least seven hours.
The report also shows that drivers missing 2-3 hours of sleep almost quadruples their risk for a crash.
"The crash risk associated with having slept less than 4 hours of sleep is comparable to the crash risk associated with a [blood alcohol content] of roughly.12-.15." said Tom Calcagni, of AAA's Mid-Atlantic office. They were also more likely to have altered their sleep schedule in the past seven days.
Most drivers - 97 percent - said they recognize drowsy driving is risky.
Investigators looked at a number of factors that could have contributed to the crash, including errors committed by drivers, vehicle mechanical failures, and environmental conditions.
"Managing a healthy work-life balance can be hard and far too often we sacrifice our sleep as a result", Jake Nelson, director of Traffic Safety Advocacy and Research for AAA, said in a statement.
"Sleep often ranks low on most of our lists", he said.
That is what Karen Roberts remembers about falling asleep behind the wheel in 1988.