A 2007 study by the National Highway Traffic Safety Administration found that only 2.2% of American drivers tested positive for a BAC over the legal limit on weekends. This has fallen from 4.4% in 1996 and 7.5% in 1973.

However, the study also found that 16% of drivers tested positive for drugs like marijuana, cocaine and prescription sedatives. As the first time for this testing, it is unknown whether that number has changed over the years.

With such a large number of drivers testing positive for drugs, DUI charges are highly likely. If you or someone you know is facing DUI charges, contact the Seattle DUI attorneys of Cowan, Kirk & Gaston at 866-822-1230.