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Cannabis is legal for adults 21+ in Maryland.​

Know the laws, be safe, and learn how to protect youth.

Be informed. Be responsible. Be Cannabis Smart.

Drugged Driving — Take it seriously. Respect the effect.

Driving even a little high ​can wreck you.

Cannabis and driving don’t mix! Being even a little high behind the wheel can wreck you—protect yourself and others on the road.


How does cannabis influence my driving?

Cannabis affects areas of the brain that control balance, coordination, memory, and judgment.1 On the road, this can result in slower reaction time, decreased ability to concentrate and make decisions, and reduced awareness of time and distance, which are critical for safe and alert driving.

How long should I wait to drive after using cannabis?

Research suggests waiting six hours after using cannabis before driving.2 However, effects from edibles can be delayed, and last up to 12 hours. If you’ve mixed cannabis with other substances like alcohol, plan to wait even longer before driving. Remember—if you feel different, you drive different.

Can I get a DUI?

Yes. Using cannabis while driving (by a driver or passenger) and driving under the influence of cannabis is against the law. If you are impaired while driving, you can get a DUI — even as a certified patient with a medical card.

What else should I know?

No matter what you may have heard, cannabis is a drug with impairing effects — ​it doesn’t make you laser-focused or a better driver. Driving even a little high is never as safe as driving sober.

It’s not just you on the road.

If you’re going to consume cannabis, stay at home, or make a plan for a safe and sober driver, every time! Protect yourself and others—let’s keep Maryland safe!

Cannabis and Driving Fact Sheet

1National Academies of Sciences Engineering and Medicine, “The health effects of cannabis and cannabinoids: Current state of evidence and recommendations for research,” Washington, DC, 2017.​​​

2Fischer B, Russell C, Sabioni P, et al. Lower-Risk Cannabis Use Guidelines: A Comprehensive Update of Evidence and Recommendations [published correction appears in Am J Public Health. 2018 May;108(5):e2]. Am J Public Health. 2017;107(8):e1-e12. doi:10.2105/AJPH.2017.303818​​​

Smoke-free Spaces: Respect each other.

a no smoking sign in a public park​​

Where can I smoke cannabis?

Generally speaking, it’s legal to smoke cannabis in private homes and on private property. However, if you rent or live in an HOA, additional restrictions may apply. Check your rental or HOA agreement.

Where can’t I smoke cannabis?

Smoking cannabis is not permitted in indoor and outdoor public spaces. That means parks and playgrounds, streets and sidewalks, bars and restaurants, moving cars* and public transportation (buses, vans, trains, cabs, limousines).

*Smoking in moving cars is a safety risk and exposes other occupants to secondhand smoke odor and chemicals.

What else do I need to know?

Smoking cannabis in public spaces can expose others—including children—to secondhand smoke. Plus, not everyone enjoys the smell. By respecting smoke-free spaces and the preferences of others, you can help contribute to a positive cannabis culture within your community.

Resources and Helplines