Utah has a “zero tolerance” per se DUI law enacted. The law prohibits a driver from operating a motor vehicle if the driver has any detectable level of an illicit drug or drug metabolite present in their bodily fluids.
The penalties for driving while under the influence of marijuana in Utah vary depending on previous convictions, injury or death of other parties, and the destruction of public property. You can visit our DUI page to learn more about penalties for DUI in Utah.