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CDL Disqualification

The federally defined list of offences that take away a commercial driver's licence - including offences committed in a personal car, and a lower alcohol limit than applies to other drivers.

Informational only - this is not legal advice. These definitions explain general legal vocabulary in plain English. They are not advice about your situation, reading them creates no attorney-client relationship, and the law differs from state to state and changes over time. For advice you can rely on, speak to a lawyer licensed in your state.

What it means

A commercial driver's licence is issued by a state but governed by federal standards, and the federal rules define a set of offences for which the licence must be disqualified for a minimum period. The list includes driving a commercial vehicle with a blood-alcohol level at half the limit that applies to ordinary drivers, refusing a chemical test, leaving the scene of an accident, using a vehicle to commit a felony, and driving a commercial vehicle while the CDL is suspended. A second major offence disqualifies for life, with limited possibility of reinstatement.

What makes the rules unlike ordinary traffic law is that most of the major offences count when committed in any vehicle, including the driver's own car off duty. A conviction for impaired driving in a personal vehicle disqualifies the commercial licence even if the state court imposed no suspension on the ordinary one. A separate schedule of "serious traffic violations" - excessive speeding, reckless driving, improper lane changes, texting or hand-held phone use while driving a commercial vehicle - disqualifies after a second or third conviction within a set period.

Two further federal rules close the usual exits. A state may not "mask" a CDL holder's conviction by diverting it, deferring it, or allowing a plea that keeps it off the record, and the driver must notify their employer and their licensing state of any traffic conviction, in any vehicle, within a short period. Employers are required to check the record before hiring and annually, and a federal clearinghouse now records drug and alcohol testing violations separately from the driving record.

Where this comes from

The disqualification table - the offences, the minimum periods and the lifetime rule - is at 49 C.F.R. § 383.51; the lower commercial alcohol limit is defined at § 383.5 and § 392.5; the ban on masking convictions at § 384.226; and the driver's duty to report convictions to the employer and the licensing state at §§ 383.31 and 383.33. The Drug and Alcohol Clearinghouse is 49 C.F.R. part 382, subpart G. States issue the licence and prosecute the offences, but may not apply a shorter disqualification than the federal minimum.

When people hire a lawyer for this

A commercial driver facing any moving violation - in any vehicle - should ask a lawyer what it does to the CDL before resolving it, because the federal disqualification follows from the conviction itself and no state court can plead around it. The advice is often not about the ticket but about which charge to fight for, since a reduction to a non-listed offence is the only outcome that protects the licence.

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Part of the LawyerLand plain-English legal glossary. Definitions are written from primary sources - statutes and court rules - and each entry states the authority it rests on, or says plainly when the doctrine is state law with no national rule.

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