The results of roadside surveys of drug and alcohol use by drivers were analyzed by researchers, they found that almost 32 percent of drivers involved in fatal accidents and about 14 percent of drivers not involved in such accidents, tested positive for at least one drug.
Columbia University researchers found that using drugs and alcohol together greatly increased the risk of a fatal crash, according to the report. In fact, those testing positive for both alcohol and drugs have a 23-fold increased risk, Health Day reports.
Drugs most likely to be associated with deadly accidents in order from most dangerous to least are:
“While alcohol-impaired driving remains the greatest threat to traffic safety, these findings about drugged driving are particularly salient in light of the increases in the availability of prescription stimulants and opioids over the past decade,” lead researcher Dr. Guohua Li said in a news release.
The findings are published in Accident Analysis and Prevention.