AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/cdl-refuse-alcohol-test

What is the minimum CDL disqualification for a first refusal to take an alcohol test?

1 year, the same as failing it.

Start playing free

  1. 60 days
  2. 1 year ✔
  3. No penalty if you are sober

Why: Under implied consent, refusing a required alcohol test counts like a major offense. A first refusal in a CMV disqualifies you for at least one year.

Huh, didn't know that: The same one-year penalty applies if the refusal happens in your personal car.

The dad joke
Why did the 18-wheeler get an award? It was outstanding on every haul.
Like this card?
Play the game

References

Answer: 1 year. Under implied consent, refusing a required alcohol test counts like a major offense. A first refusal in a CMV disqualifies you for at least one year.

  1. California Commercial Driver Handbook (DMV) www.dmv.ca.gov/portal/file/california-commercial-driver-handbook-pdf
    Refusing to undergo blood alcohol testing.
    Checked 2026-10-10.
  2. 49 CFR 383.51 Disqualification of drivers (eCFR) www.ecfr.gov/current/title-49/section-383.51
    Refusing to take an alcohol test as required by a State or jurisdiction under its implied consent laws
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Trucking (CDL)What blood alcohol level is illegal for someone driving a commercial motor vehicle?Trucking (CDL)A major offense, like leaving the scene of an accident, happens while hauling placarded hazmat. What is the first-offense disqualification?Trucking (CDL)What happens to a CDL holder convicted of a second major offense, like two alcohol violations?

That's stuff everyone should know.