A third of drivers – 33 % – who drink alcohol and use marijuana at the same time reported getting behind the wheel two hours or less after consumption, more than the percentage of drivers who only use alcohol. And it’s a serious problem: the combination worsens driving performance more than either substance by itself.
Those are the main findings of a new study from the Insurance Institute for Highway Safety, a nonprofit financed by the insurance industry, released earlier this month.
“Alcohol impairment is associated with almost 30 percent of the fatalities on our roadways, and we have made very little progress to reduce
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