PHILADELPHIA — Federal data suggests that 15 to 33 percent of fatal automobile crashes are caused by drowsy drivers, but very little research has addressed what factors play a role in operating a vehicle in this impaired state. New research from the Perelman School of Medicine at the University of Pennsylvania is revealing that short sleepers, those who sleep less than six hours per night on average, are the most likely to experience drowsy driving , even when they feel completely rested. The study is published in the October issue of the journal Accident Analysis and Prevention.
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