In a recent survey of residents in 10 states and Puerto Rico, 4% said they had fallen asleep while driving during the previous 30 days. That percentage translates into 1.8 million drowsy drivers in those areas alone, investigators at the Centers for Disease Control and Prevention reported.
The survey included responses from 92 102 state and territory residents aged 18 years or older. All had answered questions about insufficient sleep on the 2011-2012 Behavioral Risk Factor Surveillance System survey.
Reducing Drowsy Driving Crashes. JAMA. 2014;312(9):883. doi:10.1001/jama.2014.10405