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How does marijuana affect driving?

I just moved to Illinois from Indiana, and legal weed shops are everywhere. I’m not used to this being legal, let alone seeing people puff a joint at a bar and then drive away. As far as I know, marijuana impacts driving every bit as much as alcohol, but I’m not positive. How does marijuana affect people behind the wheel?

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Eric Schad · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Seeing legal marijuana dispensaries and people openly smoking joints is definitely odd the first time around. But don’t think that you can just puff away on a joint and get behind the wheel in
Illinois
or any other state. While chemically different than alcohol marijuana affects driving in a number of ways:
  • Slower reaction times
  • Reduced motor skills
  • Impaired judgment
  • Struggles with concentration
  • Distorted perceptions of reality
These impairments sound almost identical to drunk driving, but with a few differences. According to a study from the nonprofit Marshall Project, driving under the influence of marijuana is the equivalent of a blood-alcohol level of between 0.01% and 0.05%. This means that you could technically pass a blood test or field sobriety test in the eyes of the law.
However, there’s no reason to tempt fate. If you’re going to smoke or take an edible, use a rideshare app, hail a taxi, or catch a ride with a friend. You may not be doing anything illegal, but the alternatives are much better for your health and the well-being of others.
Driving under the influence of marijuana is never a good idea. But you know what else isn’t a smart move? Paying too much for car insurance. Thankfully,
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