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SESK: Stuff Everyone Should Know · sesk.info/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.

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  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.

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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.

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