Research & Resources

Researchers analyzed young adult simultaneous alcohol and marijuana (SAM) users’ self-reported behavior, including the tendency to ride with an impaired driver or drive after alcohol and/or marijuana use. SAM use (compared to marijuana or alcohol only) on a given day was associated with riding with an impaired driver. SAM use (compared to marijuana only) on a given day was associated with driving after use.

This paper, “Intoxicated driving and riding with impaired drivers: Comparing days with alcohol, marijuana, and simultaneous use,” was funded by the National Institute on Alcohol Abuse and Alcoholism and published in the journal Drug and alcohol dependence.