Cannabis DWI Attorneys in Minnesota
Charged With a Marijuana-Related DWI? We Can Help. Get a free case evaluationDon’t Face a Cannabis DWI Alone
Minnesota’s marijuana laws have changed dramatically in recent years — but one thing has not changed: you can still be charged with a DWI for driving under the influence of cannabis. As legalization expands, law enforcement has increased its focus on cannabis-related impaired driving. That means more drivers are facing DWI charges based not on alcohol, but on THC impairment.
A Cannabis DWI carries the same penalties as alcohol-related DWIs, including jail time, fines, probation, long-term monitoring, and license revocation. These consequences can disrupt your job, your ability to get to school or childcare, and your financial stability.
If you or a loved one has been arrested for a Marijuana DWI in Minnesota, it’s important to contact an attorney right away. Our team has handled thousands of DWI cases, including those involving THC impairment evaluations, blood and urine testing, and Drug Recognition Evaluator (DRE) assessments. We can help you navigate this changing area of law and protect your rights from the very beginning.
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Understanding Cannabis DWI Laws in Minnesota
Minnesota law makes it illegal to drive while under the influence of cannabis. This means prosecutors do not have to prove a specific THC concentration like they do with the 0.08 alcohol standard. Instead, the state tries to show that cannabis impaired your ability to operate a vehicle safely.
Because THC metabolizes very differently than alcohol, many people are surprised to learn that you can be charged even if you feel sober or used cannabis hours earlier. THC can remain detectable in blood or urine long after impairment has faded, which makes these cases highly technical — and often highly defensible.
How Cannabis DWIs Differ from Alcohol DWIs
While the penalties are similar, Cannabis DWIs involve unique challenges:
No THC Equivalent to the 0.08 Rule
Unlike alcohol, Minnesota has no legal THC limit. Officers rely on observed impairment, DRE reports, and testing.
Unreliable Field Sobriety Tests
Standard field sobriety tests were designed for alcohol, not cannabis. Many factors unrelated to impairment — anxiety, medical conditions, fatigue — can influence performance.
Blood and Urine Testing Issues
THC testing is complex and often subjective. Key defenses include:
- Collection timing
- Chain of custody problems
- Improper testing procedures
- Misinterpretation of active vs. inactive metabolites
Penalties for Cannabis DWI in Minnesota
A Marijuana DWI carries the same potential consequences as an alcohol DWI, including:
- Jail time
- Fines
- Probation
- Long-term monitoring
- Chemical dependency assessments
- Driver’s license revocation
- License plate impoundment (in certain cases)
- Vehicle forfeiture (in certain cases)
First-time offenders can still face a license revocation of 90 days or more. If aggravating factors apply — such as prior DWIs within ten years, children in the vehicle, or a refusal to test — the charge level increases.
Our attorneys work to reduce or eliminate these penalties wherever possible.
How We Defend Cannabis DWI Charges
Every Cannabis DWI is unique. We evaluate all the facts surrounding your arrest, including:
Traffic Stop Legality
Did the officer have a lawful basis to pull you over?
Drug Recognition Evaluator (DRE) Accuracy
DRE evaluations are subjective and often flawed. We scrutinize every step of the officer’s evaluation.
Testing Reliability
Blood and urine tests must follow strict procedures. Any deviation can lead to suppression of evidence.
Timing of THC Use
We highlight scientific research showing that THC presence does not equal impairment.
Medical Marijuana Use
We ensure the state meets its burden of proving impairment beyond the presence of THC.
Our defense strategies are built on decades of combined experience and a deep understanding of Minnesota’s rapidly evolving cannabis laws.
Related Charge: Marijuana in a Motor Vehicle (Cannabis Open Package Violations)
Not every cannabis-related traffic stop results in a DWI. In many cases, officers also issue a separate charge for Marijuana in a Motor Vehicle, also known as a Cannabis Open Package Violation. This offense has nothing to do with impairment — it applies when cannabis, hemp-derived THC products, or medical cannabis are kept in the passenger area of a vehicle in opened, unsealed, or non-compliant packaging.
Drivers can face this charge even if they were completely sober.
If your stop resulted in both a Cannabis DWI and an open package violation, our attorneys can help you address each charge strategically.
Facing a Cannabis DWI in Minnesota? We Can Help.
Cannabis-related DWI laws are changing quickly, and these cases often involve complex scientific and constitutional issues. If you’re facing Marijuana DWI charges, you don’t have to go through it alone. Our attorneys are here to answer your questions, evaluate your case, and help you understand your next steps.
Call (651) 994-6744 or complete our online form for a confidential case evaluation.
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Minnesota Cannabis DWI FAQs
Sieben Edmunds Miller
Can I be charged with a DWI even if marijuana is legal in Minnesota?
Yes. Legalization does not allow anyone to drive while impaired by cannabis. Minnesota law treats cannabis impairment the same as alcohol impairment when it comes to DWI charges.
Is there a THC limit like the 0.08 alcohol rule?
No. Minnesota does not have a THC limit. Instead, officers rely on observed signs of impairment, drug recognition evaluations, and chemical testing. This makes Cannabis DWIs highly subjective — and often highly defensible.
Can medical cannabis patients be charged with a DWI?
Yes. Even registered medical cannabis patients can be charged if an officer believes they are impaired. However, the state must prove actual impairment, not just the presence of THC or its metabolites.
How long does THC stay in your system?
THC can remain detectable in the body long after impairment has ended. Some metabolites stay present for days or weeks, which is very different from alcohol. This timing issue is often a key part of a strong defense.
Can I be charged if I used cannabis the night before?
Possibly. Because THC can remain in the bloodstream long after use, some people test positive when no longer impaired. Prosecutors must still prove your ability to drive was affected at the time of the stop.
Do police use a breath test for cannabis?
No. There is currently no breath test for THC approved for Minnesota DWI enforcement. Officers typically rely on blood or urine testing, along with field sobriety tests and DRE evaluations. There is a pilot project being developed.
Sieben Edmunds Miller
What is a Drug Recognition Evaluator (DRE)?
A DRE is an officer trained to identify impairment by drugs other than alcohol. Their evaluations are subjective, often inconsistent, and frequently challenged in court. A DRE’s opinion does not automatically prove impairment.
Can I refuse a cannabis blood or urine test?
Refusing chemical testing can lead to additional penalties under Minnesota’s test refusal laws. In some situations, a refusal may be charged as a more serious crime than a standard DWI.
What happens to my driver’s license after a Cannabis DWI arrest?
Your license can be revoked even before your criminal case is resolved under certain circumstances. Revocation periods can vary based on prior offenses, aggravating factors, and whether you refused testing.
Will a Cannabis DWI affect my insurance?
Yes. Insurance companies generally treat Cannabis DWIs the same as alcohol DWIs, often resulting in significant premium increases or policy termination.
What if the officer said my eyes were bloodshot or I looked high?
Many physical signs officers rely on — such as red eyes, slow speech, or nervousness — can be caused by fatigue, allergies, stress, or medical conditions. Observations alone are rarely reliable indicators of cannabis impairment.
Should I hire a lawyer for a Cannabis DWI?
Yes. Cannabis DWI cases involve complex scientific evidence, subjective officer evaluations, and rapidly evolving Minnesota cannabis laws. Having an attorney who understands these issues is essential to protecting your rights.
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