DMV practice question · Top questions
At what blood alcohol content (BAC) is it illegal for a person 21 years old or older to drive?
- A.08Correct
- B.07
- C.06
Explanation
It is illegal to drive with a blood alcohol content (BAC) of .08% or more (.04% for commercial vehicle drivers and .01% if under 21). Other factors, such as fatigue, medications or food may affect your ability to legally operate a vehicle.
Practise for the written test
Answer real DMV-style questions, see why each answer is right and track what you have mastered.