Alcohol and drugs1 of 2
If a test shows an alcohol concentration of 0.08 percent or more, what happens to your driving privilege?
The answer
Answer: B. If you are stopped for driving under the influence and a test shows 0.08 percent or more (0.04 in a commercial vehicle requiring a CDL), you lose your driving privilege on the spot. You can be found guilty of DUI even below 0.08, and under 21 any alcohol concentration can lead to suspension.
Source: Arizona Driver License Manual — DUI penalties (p. 51)