CDL DUI Penalties: What Happens to Your Commercial License After a DUI

For a commercial driver, a DUI is more than a court case. It can end your ability to earn a living behind the wheel. Federal rules in 49 CFR 383.51 set minimum disqualification periods that every state must enforce, and many states add penalties on top of them.

First offense

A first DUI conviction disqualifies a CDL holder from operating a commercial motor vehicle for at least one year. If you were hauling placarded hazardous materials at the time, the minimum jumps to three years.

Second offense

A second major offense from a separate incident brings a lifetime disqualification. Federal rules let states offer reinstatement after 10 years if the driver completes an approved rehabilitation program, but another offense after reinstatement is permanent.

What counts as a major offense

• Driving a CMV with a blood alcohol concentration of 0.04 or higher
• Driving any vehicle under the influence of alcohol or drugs as defined by state law
• Refusing an alcohol or drug test under implied consent laws
• Leaving the scene of an accident
• Using a vehicle to commit a felony
• Driving a CMV while your CDL is revoked, suspended or disqualified
• Causing a fatality through negligent operation of a CMV

It applies in your personal vehicle too

Many CDL holders are surprised to learn that a DUI in their own car or pickup still triggers CDL disqualification. See our guide on CDL DUIs in a personal vehicle.

Reporting duties

Under 49 CFR 383.31 you must notify your employer of a traffic conviction within 30 days. Under 383.33 you must notify your employer of a license suspension or disqualification before the end of the next business day.

Your next steps

1. Write down everything you remember about the stop while it is fresh.
2. Note every deadline on your paperwork. Many states give you only days to request an administrative hearing.
3. Talk to an attorney who handles CDL cases specifically. See how to choose one.

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CommercialDUI.com is an independent information resource for commercial drivers. We are not a law firm and nothing on this site is legal advice. Laws change and vary by state, so confirm details with your state licensing agency or a licensed attorney.