At any given time, about 2 million drivers with three or more drunk driving
offenses are on the road in the US.

Over 1.5 million drivers each year are arrested for driving under the
influence (DUI) in the US. At any given time, approximately 2 million
people are thought to be driving with DUI records that include three or
more offenses, according to statistics from the State Highway Safety
Office. One-third of all drunk driving accidents are from repeat offenders.
It is estimated that between 50 and 75 percent of drivers with DUI
convictions whose driving licenses have been suspended continue to operate
vehicles illegally. DUI is thought to be responsible for at least one-third
of all traffic fatalities, even though drunk drivers generally only make up
a fraction of one percent of the total number of drivers on the road.