4/20: Risky Driving Behaviors Behind the Wheel

by Gwen Newell

As ‘4/20’ looms around the corner, it’s imperative to call attention to how users of both alcohol and marijuana take more risks behind the wheel – admitting a variety of dangerous driving behaviors.

Those who use both are some of the most dangerous drivers on the road, as they are significantly more likely to speed, text, intentionally run red lights, and drive aggressively than those who don’t, according to data from the AAA Foundation for Traffic Safety. These drivers are also far more likely to report driving under the influence of alcohol than those who consume only alcohol and not marijuana.

The data also found that drivers who use both marijuana and alcohol were significantly more prone to driving under the influence of alcohol versus those who only drink alcohol but do not use marijuana. These motorists identified as someone who consumed alcohol and used marijuana in the past 30 days, and in some cases, they may have used both at the same time. They also engage in various other dangerous driving behaviors far more than drivers who consume either just alcohol or abstain from either drinking alcohol or using marijuana.

Compared to alcohol-only users, drivers who admitted to using both were more likely to report such behaviors as: speeding on residential streets (55%) vs. alcohol-only (35%), aggressive driving (52%) vs. alcohol-only (28%), intentional red-light running (48%) vs alcohol-only (32%), and texting while driving (40%) vs. alcohol-only (21%). Unsurprisingly, drivers who neither drink alcohol nor use marijuana were considerably less likely to engage in the sorts of risky driving behaviors examined. This Foundation research was published in January 2021 in the peer-reviewed journal Transportation Research Record. (See abstract)

Previous research suggests that users who drive high are up to twice as likely to be involved in a crash. Regardless of whether marijuana is legal or prescribed, driving under the influence of the drug is illegal and extremely dangerous. Although some drivers think marijuana makes them a better driver, research shows it can inhibit concentration, slow reaction times, and cloud judgement. That judgement is even more compromised by a marijuana user who also drinks alcohol. It’s important that drivers know the risk that comes with these two drugs and never drive impaired.

AAA is committed to educating the public about the dangers of substance-impaired driving. Through AAA Foundation research, AAA is working to improve understanding of the topic and work collaboratively with safety stakeholders to reduce the impact of substance-impaired driving-related crashes.

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