CDL Disqualifications: The Full List (2026)
CDL disqualifications come from a single federal rule that works the same way in every state. Here's exactly what counts, how long you lose your CDL, and the details people most often get wrong — without the scare tactics.
Quick answer
- Where the rules come from
- One federal regulation, 49 CFR 383.51 — the same in every state
- Your personal car counts
- A DUI or serious offense in your own vehicle can disqualify your CDL
- Major offense (DUI, refusal, etc.)
- 1 year first time (3 years if hauling placarded hazmat); lifetime on a second
- One serious violation
- Does NOT disqualify — only a 2nd or 3rd within 3 years does
- Drug-trafficking felony with a vehicle
- Lifetime with no reinstatement — the one that never comes back
Requirements verified July 20, 2026 against FMCSA (49 CFR 383.51)
How CDL disqualifications work
Every disqualification below comes from one federal regulation,49 CFR 383.51. Because it's federal, the offenses and time periods are the same whether you drive in Texas, California, or any other state — your state runs the process, but it can't shorten the federal minimums.
Two things surprise people most. First, major offenses count even when you were driving your personal car, not a commercial vehicle (49 CFR 383.51(a)(3)). A DUI on a weekend in your own pickup can disqualify the CDL you use for work. Second, disqualification periods arecumulative — a second offense stacks on top of the first, it doesn't reset the clock.
Major offenses
These are the most serious: DUI or driving under the influence of a controlled substance, a 0.04% or higher blood alcohol level while driving a CMV, refusing a required alcohol or drug test, leaving the scene of a crash, using a vehicle to commit a felony, driving while already disqualified, or causing a fatality through negligent driving.
These count whether you were in a commercial vehicle or your own car. Examples: DUI, a 0.04+ blood alcohol level in a CMV, refusing a required alcohol test, leaving the scene of a crash, or using a vehicle to commit a felony.
| Situation | Disqualification |
|---|---|
| First offense | 1-year disqualification (3 years if you were hauling placarded hazmat) |
| Second offense (any combination) | Lifetime — a state may allow reinstatement after 10 years and rehab |
| Using a vehicle in a drug-trafficking felony | Lifetime — no reinstatement |
Lifetime, but not always forever — with one exception
A second major offense (any combination of the ones above, in separate incidents) is a lifetime disqualification. But a state may let you apply for reinstatement after 10 years if you complete an approved rehabilitation program. That is a real difference from the one offense that never comes back: using a vehicle in afelony involving manufacturing or distributing a controlled substance is a lifetime disqualification with no reinstatement — no 10-year path, no rehab option.
Serious traffic violations
This is the category people worry about most and misunderstand most. Examples include speeding 15+ mph over the limit, reckless driving, following too closely, an improper or erratic lane change, texting or holding a phone while driving a CMV, and driving without the correct class or endorsement.
A single serious violation does not disqualify you.One 15-over ticket, by itself, carries no CDL disqualification. The penalty only applies to a second serious violation within 3 years (60 days) or a third within 3 years (120 days). The 3-year window is measured between the dates of the offenses.
Examples: speeding 15+ mph over the limit, reckless driving, following too closely, an improper lane change, texting or holding a phone while driving a CMV, or driving without the right class or endorsement.
| Situation | Disqualification |
|---|---|
| First offense | No disqualification |
| Second within 3 years | 60-day disqualification |
| Third or more within 3 years | 120-day disqualification |
Railroad grade-crossing violations
Unlike serious violations, grade-crossing violations disqualify you on thefirst offense. These are violations at railroad crossings — failing to slow down and check, failing to stop when required, or not leaving enough room to fully clear the tracks.
Violations at railroad crossings — failing to slow and check, failing to stop, or not having room to fully clear the tracks.
| Situation | Disqualification |
|---|---|
| First offense | At least 60 days |
| Second within 3 years | At least 120 days |
| Third or more within 3 years | At least 1 year |
Out-of-service order violations
If a roadside inspector places you or your vehicle out of service and you drive anyway, that's an out-of-service violation. The key detail here is the lookback window: repeat out-of-service violations are counted over10 years, not the 3-year window used for serious violations.
Driving after an inspector places you or your vehicle out of service. The lookback for repeat offenses is 10 years.
| Situation | Disqualification |
|---|---|
| First offense | At least 180 days (up to 1 year; up to 2 years hauling hazmat or 16+ passengers) |
| Second within 10 years | At least 2 years (3 years hazmat/passengers) |
| Third or more within 10 years | At least 3 years |
Why you can't hide a CDL conviction
Non-commercial drivers can sometimes take traffic school or accept a deferred-judgment deal to keep a ticket off their record. That option does not exist for CDL holders. Federal law at49 CFR 384.226 prohibits states frommasking — hiding, deferring judgment, or offering diversion — for any traffic conviction of a CDL or commercial-permit holder, in any vehicle. The conviction goes on your commercial driving record. The only exceptions are parking, vehicle-weight, and vehicle-defect violations.
Related pages
Disqualifications are only one way to lose a CDL. A lapsed or failed medical exam is another — seeDOT physical disqualifications. If you're just starting out, ourhow to get a CDL guide walks through the full process.
CDL Disqualification FAQ
Can a DUI in my personal car disqualify my CDL?
Yes. Federal rules count major offenses whether you were in a commercial vehicle or your own car (49 CFR 383.51(a)(3)). A DUI, a refusal to test, or leaving the scene of a crash in your personal vehicle can disqualify your CDL just as if it happened in a truck.
Does one speeding ticket disqualify my CDL?
No. A single serious violation — like one ticket for going 15+ mph over the limit — does not disqualify you. Disqualification only kicks in on a second serious violation within 3 years (60 days) or a third within 3 years (120 days). Grade-crossing and out-of-service violations work differently, and a first offense there does count.
What is the difference between a lifetime disqualification and a lifetime with no reinstatement?
A second major offense brings a lifetime disqualification, but a state may allow you to apply for reinstatement after 10 years if you complete an approved rehabilitation program (49 CFR 383.51(a)(6)). Using a vehicle to commit a felony involving manufacturing or distributing a controlled substance is different: it is a lifetime disqualification with no reinstatement, ever.
Can I keep a CDL conviction off my record with traffic school or a plea deal?
No. Federal law (49 CFR 384.226) prohibits states from "masking" — hiding, deferring, or diverting — any traffic conviction for a CDL or permit holder so that it stays off the driving record. The traffic-school route that non-commercial drivers sometimes use is not available to CDL holders. Parking, weight, and vehicle-defect violations are the only exceptions.
How far back do out-of-service violations count?
Out-of-service order violations use a 10-year lookback for repeat offenses, not the 3-year window used for serious violations. A second out-of-service violation within 10 years of the first means at least a 2-year disqualification.
Official sources
Every requirement on this page traces to one of these official sources.