There are various criminal charges for operating a motorized, electric, or otherwise-powered transportation device on public roadways or waterways while under the influence of or intoxicated by drugs or alcohol, as defined by state law. DUI, DWI, OUI, OWI, and BUI—driving under the influence, driving while intoxicated, operating under the influence, operating while intoxicated, and boating under the influence—are some of the common names for such impaired-driving or impaired-operating criminal offenses.

Laws regarding the definitions and names of such alcohol and drug-related driving offenses vary from state to state and are usually located in a state’s statutes—often in the penal code or criminal code.

In Utah, the primary statute governing offenses related to operating a vehicle while under the influence of alcohol or drugs is found in the Utah Code, specifically under Section 41-6a-502. The offense is commonly referred to as 'Driving Under the Influence' (DUI). Utah law defines a DUI as operating or being in actual physical control of a vehicle with a blood alcohol concentration (BAC) of 0.05% or higher, or while under the influence of alcohol, drugs, or a combination of both to a degree that renders the person incapable of safely operating a vehicle. The state also has a 'Not-a-Drop' law that applies to drivers under the age of 21, which prohibits any measurable amount of alcohol in their system. Penalties for DUI offenses in Utah can include fines, jail time, community service, and mandatory educational programs, as well as driver's license suspension. Additionally, Utah has laws against boating under the influence (BUI), which apply to operating watercraft while intoxicated, and these are found under Section 76-9-701 of the Utah Code. The state takes a strict stance on impaired operation of any motorized vehicle, whether on land or water.