What Percent Of Drivers Tested Positive For Drug Impairment According To The Nhtsa?
What Percent Of Drivers Tested Positive For Drug Impairment According To The Nhtsa? NHTSA’s National Roadside Survey conducted in 2013-2014 (PDF, 173 KB) found that 20 percent of surveyed drivers tested positive for potentially impairing drugs. What percentage of car accidents are caused by drugs? Drugs other than alcohol (legal and illegal) are involved in