DUI stands for Driving Under the Influence, and DWI stands for
Driving While Intoxicated. As a general rule of thumb, any
alcohol-related traffic incident is referred to as a DUI in the State
of Virginia. No distinction is made between a DUI and a DWI in
Virginia and the terms are often used interchangeably.
A DUI covers a broader spectrum of impaired driving. For example,
you are considered driving under the influence if your driving is
impaired from prescription, over-the-counter or illegal drugs.
Also, because intoxication might not legally occur until you reach a
BAC level of 0.08 or higher, driving under the influence allows for a
looser interpretation of the suspicion and cause of arrest.