Cannabis DUI Laws in Utah

Utah (UT)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, oral fluid, field sobriety

authorized methods

Implied Consent

Yes

required for licensed drivers

First Offense Penalty

48 hours to 180 days in jail, fines minimum $1,310, 120-day license suspension

Test Refusal Penalty

18-month license revocation

Overview

Utah enforces a zero-tolerance policy for cannabis and driving, prohibiting any measurable amount of THC or its metabolites in a driver's system. Utah has a medical cannabis program but maintains some of the strictest DUI laws in the country — the state also has a 0.05% BAC limit for alcohol, the lowest in the nation.

Utah's strict approach extends to THC metabolites, meaning that cannabis consumed days or weeks ago can still trigger a DUI charge. The state uses blood, urine, and oral fluid testing. Utah's implied consent refusal penalty of 18 months is among the longest in the country.

Key Facts

•Zero tolerance for any detectable THC or metabolites
•Also has the nation's lowest alcohol BAC limit (0.05%)
•Medical cannabis is legal but patients are not exempt
•18-month license revocation for test refusal
•First offense carries minimum $1,310 in fines
•Oral fluid testing is authorized

Frequently Asked Questions

What is Utah's THC driving limit?+

Utah has a zero-tolerance policy. Any measurable amount of THC or its metabolites in your system while driving is a violation.

Can medical cannabis patients drive in Utah?+

Medical cannabis patients are not exempt from Utah's zero-tolerance DUI standard. Any detectable THC while driving can result in a DUI charge, even with a valid medical card.

What are the penalties for a first cannabis DUI in Utah?+

A first offense carries 48 hours to 180 days in jail, fines starting at $1,310, and a 120-day license suspension.

Why is Utah's DUI law so strict?+

Utah has historically taken a conservative approach to substance use. The state has both zero-tolerance THC laws and the lowest alcohol BAC limit in the nation (0.05%).

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

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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. Utah 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 Utah state resources and consult with a qualified attorney for legal guidance. Cannabismarketcap does not guarantee the accuracy or completeness of any information presented.