Tracy Tiernan - November 15, 2025 - Criminal Defense, Drug Crimes

Recreational use of cannabis is still illegal in Oklahoma; Oklahoma law, like federal law, still counts cannabis as a Schedule I controlled substance, meaning that it is always illegal and does not have any legally recognized medical uses. Despite this, Oklahoma has allowed medical use of cannabis and implemented rules about the possession and acquisition of medical cannabis, as have many other states. Therefore, there are some instances in which you can possess or buy small quantities of marijuana without fear of criminal prosecution. Driving under the influence of cannabis is still against the law, even if the driver possessed the cannabis legally. There are more legal gray areas about what counts as cannabis intoxication and how to measure it than there are with alcohol intoxication. If you are facing criminal charges for driving under the influence of cannabis or another controlled substance, contact a Tulsa drug charge lawyer.
Penalties for Driving Under the Influence of Cannabis in Oklahoma
Oklahoma law treats driving under the influence of intoxicating substances the same way, regardless of whether the substance in question is alcohol or an illicit drug, such as cannabis. The following penalties apply if you are convicted of driving under the influence of cannabis in Oklahoma:
The Trouble With Cannabis Breathalyzers
If you get charged with cannabis DUI, a breathalyzer cannot prove as easily that you were high as an alcohol breathalyzer can prove that you were drunk. There is no established legal limit for the concentration of cannabis metabolites in your blood, and cannabis metabolites remain detectable in a person’s breath long after the intoxication has passed, remaining detectable for months. Another big difference with cannabis DUI cases is that, if there are drugs in your car, you can also get charged with drug possession.
Contact Tracy Tiernan About Criminal Defense Cases
A criminal defense lawyer can help you if you are facing criminal charges for driving under the influence of cannabis or other illegal drugs. Contact Tracy Tiernan in Tulsa, Oklahoma, to discuss your case.