Driving and Cannabis: What’s Legal, What’s Not?

Cannabis is legal in Michigan for both medical and recreational use, but that doesn’t mean you can use it freely behind the wheel. Driving laws around cannabis are strict, and knowing the difference between what’s legal and what’s not can help you avoid serious trouble. This guide breaks it down simply so you can stay safe and legal on the road.

Can You Drive After Using Cannabis in Michigan?

No, driving under the influence of cannabis is illegal in Michigan. Just like alcohol, cannabis can slow your reaction time, affect your coordination, and impair your judgment. Even if you feel “okay” to drive, being under the influence can still affect your ability to drive safely—and legally.

If you're pulled over and an officer suspects you're impaired, they can conduct roadside sobriety tests or call in a drug recognition expert. You could be arrested and charged with a DUI (Operating While Intoxicated), which carries heavy penalties including fines, license suspension, and possible jail time.

Is It Legal to Have Cannabis in the Car?

Yes, you can have cannabis in your car, but only under certain conditions. The cannabis must be in a sealed container and stored in a place that is not easily accessible—like the trunk or a locked glove box. It’s illegal to have an open container of cannabis within reach of the driver or passengers. That includes open bags, unsealed jars, or partially smoked joints.

Think of cannabis in the same way you would alcohol: it needs to be sealed and out of reach while you're driving. If police find cannabis that isn’t properly stored, you could be fined even if you're not impaired.

Can Passengers Use Cannabis in the Car?

No, passengers are not allowed to use cannabis in a moving vehicle either. Consuming cannabis in a car—whether you’re the driver or a passenger—is against Michigan law. The only legal place to use cannabis is in a private space, like your home. Public use is not allowed, and that includes inside your car.

Even if the car is parked on a public street or lot, using cannabis inside it is considered public use and could get you a ticket or fine.

What Happens If You Get Caught Driving High?

Being charged with driving under the influence of cannabis is serious. Michigan law treats drug-impaired driving much like drunk driving. First-time offenders may face up to 93 days in jail, a $500 fine, court costs, six points on their license, and a 180-day license suspension. Penalties increase with repeat offenses.

Medical marijuana patients are not exempt from DUI laws. Even if you have a valid medical card, you still cannot drive while impaired.

The Bottom Line

Cannabis is legal in Michigan, but driving while high is not. If you plan to use cannabis, make sure you’re not getting behind the wheel for several hours afterward. Everyone reacts differently, and even small amounts can impact your ability to drive safely. Keep your products sealed and out of reach, and never use cannabis in the car.

Staying informed about the law not only protects you but also keeps everyone else on the road safe. Looking for trusted cannabis products and guidance on safe use? Visit MicroClinic Westland, your reliable cannabis dispensary in Westland, MI, for quality products and helpful advice.