How Long Will You Lose Your CDL After a DUI?

A first DUI conviction disqualifies your CDL for one year under federal law, and a second major offense means a lifetime disqualification. The rule applies whether you were driving a semi or your own car on a Saturday night, and it applies in every state. How long you lose your CDL after a DUI comes down to which offense number this is, whether you were hauling hazardous materials, and whether any other disqualifying offenses sit on your record.

First DUI: One Year Off the Road

The federal minimums live in 49 CFR 383.51, and states cannot go below them. A first DUI conviction takes your CDL for one year. If you were operating a commercial vehicle placarded for hazardous materials at the time, that jumps to three years.¹

Refusing a blood alcohol test is treated exactly the same as a conviction. First refusal, one year (three with hazmat). Second refusal in a separate incident, lifetime.¹

Your Personal Car Counts Too

This is the detail that catches most CDL holders off guard. The federal regulation covers CDL holders convicted of DUI whether the vehicle was commercial or non-commercial.¹ A DUI in your personal pickup on a weekend triggers the same one-year CDL disqualification as a DUI in a loaded tractor-trailer. The only place the vehicle type changes the length is hazmat, which extends a first offense to three years.

The 0.04% BAC Threshold in a Commercial Vehicle

The general legal limit is 0.08%. In a commercial motor vehicle, the threshold is half that: 0.04%. Driving a CMV at or above 0.04% BAC is a disqualifying offense on the same federal table, carrying the same one-year, three-year, or lifetime consequences.¹ You can blow well under the number that would get a regular driver arrested and still lose your CDL for a year.

In your personal vehicle, your state’s standard DUI threshold applies. But any resulting DUI conviction feeds into the federal disqualification framework at whatever BAC your state uses.

When It Becomes a Lifetime Disqualification

A “second offense” does not have to be a second DUI. Federal law groups DUI with several other major offenses in the same table, and any two of them from separate incidents mean a lifetime ban. The list includes leaving the scene of an accident, using a vehicle to commit a felony, and driving a CMV with a revoked or suspended CDL.¹ A hit-and-run five years back plus a DUI today equals lifetime, even though the DUI is your first.

Disqualifications also stack rather than running concurrently. If a new disqualification hits while you are already serving one, the new period starts after the old one ends.¹

No Hardship CDL During the Disqualification

Regular drivers can often get a restricted or hardship license to keep working through a suspension. CDL holders cannot. Federal regulations bar states from issuing any conditional, occupational, or hardship license that includes commercial driving privileges while a driver’s CDL or non-commercial driving privilege is disqualified.² Your state may still let you drive your personal car on a restricted license, but the CMV is off-limits until the full disqualification period ends.³

Plea Deals and Diversion Will Not Save the CDL

A common assumption is that a lawyer can plead the charge down or get you into diversion so the DUI never shows up. For CDL holders, federal regulations block that route directly. States cannot mask convictions, defer judgment, or use diversion programs to keep a traffic violation off a CDL holder’s driving record.⁴ The prohibition covers offenses in any vehicle, not just commercial ones. Whatever deal you strike in court, the conviction lands on your record.

Tell Your Employer by the End of the Next Business Day

Federal regulations require any CDL holder whose license is suspended, revoked, or canceled to notify their current employer before the end of the next business day after receiving notice.⁵ Missing that deadline stacks a separate compliance violation on top of the DUI. Your employer is also prohibited from letting a disqualified driver operate a CMV, so the information surfaces either way.

The Clearinghouse Keeps the Record Longer Than the Disqualification

Even after the disqualification period runs out, a DUI-related violation follows you through the FMCSA Drug and Alcohol Clearinghouse. Records stay in the Clearinghouse for five years from the date of the violation, or until you complete the return-to-duty process and follow-up testing plan, whichever is longer.⁶ Employers must query the Clearinghouse before hiring any CDL driver and at least once a year for every CDL driver they already employ.⁷ Every trucking company you apply to for years afterward will see it.

Before you can legally perform safety-sensitive functions again, you have to complete the return-to-duty process through a DOT-qualified Substance Abuse Professional, finish any recommended education or treatment, and pass a return-to-duty test with a negative result.⁸ The SAP also sets a follow-up testing plan, and until you finish it the violation stays unresolved in the Clearinghouse.⁶

Getting Your CDL Back

Reinstatement is not automatic when the clock runs out. You will work through your state licensing agency, which typically means confirming that the disqualification has fully expired, paying reinstatement fees, and showing proof that you finished any required alcohol or substance abuse program. Depending on your state and how long you were out, you may have to retake the CDL knowledge and skills exams. Most states also require an SR-22 filing from your insurer proving minimum coverage, usually for several years, and premiums climb sharply.

Coming Back From a Lifetime Disqualification

Lifetime does not always mean forever. States have the option to reinstate a driver after a minimum of ten years if the driver has voluntarily entered and completed a state-approved rehabilitation program. Not every state offers that path, and the program requirements vary. If you are reinstated after a lifetime disqualification and later pick up another major offense from the same federal table, the disqualification becomes permanent with no further reinstatement available.¹

1
eCFR. 49 CFR 383.51 – Disqualification of Drivers
2
eCFR. 49 CFR 384.210 – Limitation on Licensing
3
Federal Motor Carrier Safety Administration. May a State Issue a Conditional, Occupational, or Hardship License That Includes CDL Driving Privileges
4
eCFR. 49 CFR 384.226 – Prohibition on Masking Convictions
5
eCFR. 49 CFR 383.33 – Notification of Drivers License Suspensions
6
Federal Motor Carrier Safety Administration. How Long Will CDL Driver Violation Records Be Available for Release to Employers From the Clearinghouse
7
FMCSA Drug and Alcohol Clearinghouse. Query Plans
8
FMCSA Drug and Alcohol Clearinghouse. The Return-to-Duty Process and the Clearinghouse