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It’s bad enough there will be millions of people out on the roads during the holidays but many of them may be lacking sleep and those drivers are as compromised as if they were drinking!

A new study from the AAA Foundation for Traffic Safety finds that drivers who sleep for less than five hours have quadruple the risk of having a crash. That risk is similar to the one the U.S. government associated with driving over the legal alcohol limit.

The AAA Foundation says drivers can’t miss sleep and still expect to be able to safely function behind the wheel.

Time Magazine reports on a survey by the Centers for Disease Control and Prevention of more than 440,000 U.S. adults revealing that 35 percent usually sleep for less than seven hours daily, including 12 percent who report usually sleeping for five hours or less.