Cannabis DUI Laws in Wisconsin

Wisconsin (WI)Zero Tolerance

Any detectable amount of THC in a driver's system can result in a DUI charge, regardless of actual impairment.

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DUI Law Details

THC Limit

Zero tolerance (any detectable amount)

legal threshold

Testing Method

Blood, urine, field sobriety

authorized methods

Implied Consent

Yes

required for licensed drivers

First Offense Penalty

$150-$300 fine (civil forfeiture for first offense), 6-month to 9-month license revocation

Test Refusal Penalty

1-year license revocation

Overview

Wisconsin enforces a zero-tolerance standard for cannabis and driving under its OWI (Operating While Intoxicated) statute. Any detectable amount of THC in a driver's system is a violation. Wisconsin is unique in treating a first-offense OWI as a civil forfeiture rather than a criminal offense.

Cannabis remains illegal in Wisconsin for both medical and recreational use, though some municipalities have decriminalized small amounts. The zero-tolerance approach combined with no legal cannabis program means any THC detection results in both OWI charges and potential drug possession charges.

Key Facts

•Zero tolerance for any detectable THC
•First offense is a civil forfeiture, not criminal
•Cannabis is fully illegal in Wisconsin
•First offense carries only $150-$300 fine
•1-year license revocation for test refusal
•Subsequent offenses are criminal with jail time

Frequently Asked Questions

Is a first cannabis DUI criminal in Wisconsin?+

No. Wisconsin is unique in that a first-offense OWI is treated as a civil forfeiture, not a criminal offense. However, second and subsequent offenses are criminal.

What are the penalties for a first cannabis OWI in Wisconsin?+

A first offense carries a $150-$300 fine and a 6-month to 9-month license revocation. It is not a criminal offense.

Does Wisconsin have a THC driving limit?+

Wisconsin has a zero-tolerance policy. Any detectable amount of THC while driving constitutes a violation under the OWI statute.

Related State DUI Laws

Explore cannabis DUI laws in other states with similar regulations or neighboring jurisdictions.

Effect-Based Standard

Iowa

Zero Tolerance

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Wisconsin Cannabis Market

Disclaimer: The information on this page is provided for educational and informational purposes only and does not constitute legal advice. Cannabis remains illegal under US federal law. Wisconsin DUI laws and regulations are subject to change and may vary by local jurisdiction. THC limits, penalties, and testing methods described here are based on publicly available information and may not reflect the most current regulations. Always verify current laws with official Wisconsin state resources and consult with a qualified attorney for legal guidance. Cannabismarketcap does not guarantee the accuracy or completeness of any information presented.