OUI and DUI are two terms used to refer to different forms of impaired driving. OUI stands for “operating under the influence,” and is typically used in reference to the operation of a vehicle while under the influence of alcohol or drugs. In contrast, DUI stands for “driving under the influence,” and is used to refer to the act of driving a vehicle while under the influence of alcohol or drugs. While both terms refer to impaired driving, they may have different legal meanings and consequences depending on the state or country in which they are used. Some states may use one term over the other, or both terms interchangeably.
