What is a DOT medical card?
A certificate from a certified medical examiner confirming you're fit to drive a commercial vehicle. Required by 49 CFR 391.41.
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CDL Expiration Calculator (License + Medical Card)
Track your CDL and DOT medical card together
Quick answer:
CDL holders track two federal expirations: the license itself (typically 5–8 years) and the DOT medical certificate (up to 24 months). Enter both dates to see which lapses first. Under 49 CFR 391.41, an expired medical certificate downgrades your CDL automatically, even if the license is current.
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Frequently asked questions
How often does the medical card expire?
Up to 24 months. Shorter (3–12 months) for conditions requiring monitoring (hypertension, diabetes).
What happens if my medical card expires?
Your CDL is automatically downgraded to a non-commercial license. Restoring requires a new exam and state reinstatement.
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