Derek Connor
May 12 2016 . 4 min read



In my law practice medical marijuana patients often approach me with questions regarding their rights. One issue that often comes up is whether or not a patient using cannabis is allowed to drive. The simple answer is that it is perfectly legal under Nevada state law for a medical marijuana patient to maintain their driver’s license. Unfortunately, the law regarding marijuana use and driving isn’t that simple and this article is meant to address common concerns associated with medical cannabis use and operating a motor vehicle.

Yes. Even though Nevada state law protects a legal marijuana patient’s right to use and possess marijuana for medical purposes, you can still be charged with Driving Under the Influence (DUI) if you are found to be in “actual physical control” of a motor vehicle while under the influence of marijuana. Whether you are found to be in actual physical control of a vehicle depends on a variety of factors, but it is generally defined as the ability to make the vehicle operate. Nevada makes no distinction between illegal marijuana users and state legal medical marijuana patients when it comes to driving under the influence. Patients need to understand that a patient card offers no protection from prosecution for DUI. If you are found to be in actual physical control of a motor vehicle while under the influence of marijuana, you may be arrested and charged with DUI.

If a person cannot safely drive a motor vehicle due to the use of marijuana, or other drugs, they may be charged with a DUI. To be charged with driving while impaired, the arresting officer will look at the totality of the circumstances to determine if the drug/substance rendered the driver incapable of driving safely. The officer often determines your level of impairment through field sobriety tests (FST). Most people do not realize that a FST is optional and can be refused. Regardless, if you are found to be impaired to a degree that prevents you from operating your vehicle safely, you may be arrested and charged with DUI.

Even if you are not impaired, you may be charged with, and convicted of, a DUI under a per se rule violation. The term per se is a Latin phrase that translates to “in itself.” With regard to a DUI charge, a per se violation occurs simply because you have greater than an arbitrarily set limit of a substance in your body at the time of the offense, even if you are not impaired at all. With respect to a marijuana DUI, if the prosecution can prove you had a certain amount of active marijuana, or marijuana metabolite, in your system while driving, they can establish a DUI per se violation. A demonstration of either of the following may result in a marijuana DUI conviction:

  • A marijuana concentration of two nanograms per milliliter of blood or more.
  • A marijuana metabolite concentration of five nanograms per milliliter of blood.

Unfortunately, if you use cannabis for any reason, the chances are very good that you could trigger one of the per se limits and be convicted of a DUI even if you were not impaired at the time of your arrest.

Obviously, you should never drive while under the influence of cannabis. If possible, never carry your medicine or paraphernalia in your vehicle, other than to transport your medicine from a dispensary to your home. Never store your medicine in plain view inside of your vehicle; if possible store your medicine in the trunk of your car in a locked case. Never smoke or otherwise use your medicine in your vehicle, even if it is parked. Do not notify the officer of your status as a medical marijuana patient unless you need to demonstrate the fact that you are legally allowed to possess cannabis. Do not consent to a search of your vehicle, home, or person. Never consent to a blood draw without a valid warrant. Remember, always be polite to the officer, there is no reason to instigate a confrontation. Finally, you have a constitutional right to remain silent, use it.

If you have been charged with a DUI, contact Connor & Connor at 702.750.9139 to discuss your options or email