It is a criminal offense to use or operate a motor vehicle, boat, airplane, motorcycle, or other motor-propelled vehicle without the consent of the owner or other person authorized to give consent. This crime is generally known as (1) unauthorized use of a motor vehicle, (2) unauthorized use of a vehicle, or (3) joyriding.

The difference between this crime and the crime of theft is that the state does not have to prove a person charged with unauthorized use of a motor vehicle intended to keep the vehicle or permanently deprive the owner of the vehicle.

Laws regarding the unauthorized use of a motor vehicle vary from state to state and are generally found in a state’s statutes—often in the penal or criminal code or the vehicle code.

In Kentucky, the unauthorized use of a motor vehicle, commonly referred to as 'joyriding,' is a criminal offense under Kentucky Revised Statutes (KRS). Unlike theft, the prosecution does not need to prove an intent to permanently deprive the owner of the vehicle. Instead, the focus is on the unauthorized use itself. The relevant statute typically falls under the state's penal code or criminal code, which outlines the elements of the offense and the associated penalties. The severity of the charge and the penalties upon conviction can vary based on the circumstances, such as the duration of the unauthorized use and any damage caused to the vehicle. It is important for individuals charged with this offense to consult with an attorney to understand the specific charges they are facing and the potential legal consequences.