Home › CDL Practice Tests › General Knowledge Questions › Question 56
At what blood alcohol concentration is a commercial driver legally considered under the influence and subject to disqualification?
- A.0.04 percent
- B.0.08 percent
- C.0.02 percent
- D.0.10 percent
Correct answer
A. 0.04 percent
Why
The standard for commercial drivers is stricter than for car drivers: 0.04 percent BAC is the disqualifying level for operating a commercial motor vehicle. Driving a CMV at or above that level can cost you your CDL.
Manual topic: Transporting Cargo Safely - Alcohol and Drugs · From the General Knowledge practice bank (GK-056).