What does the acronym "DUI" stand for?

The acronym "DUI" stands for "Driving Under the Influence." This term is widely used to describe the criminal offense of operating a vehicle while impaired by alcohol or drugs. The influence can refer to not only alcohol but also prescription medications or illegal substances that affect a driver's ability to operate a vehicle safely. Understanding this term is vital since DUI laws and penalties vary by state and can have significant legal consequences for those found guilty. The other options do not accurately reflect the standard legal terminology associated with impaired driving, which is why they are not considered correct.