1 yr
First major offense (general rule)
3 yr
Repeat major offense within 3 years
90d–5yr
Out-of-service order violations
60 / 120d
Repeat texting / phone convictions
The Carrier's Duty: Don't Require or Permit
Section 391.15(a) states the rule in two halves. The first half is on the driver: a driver who is disqualified shall not drive a commercial motor vehicle. The second half is on the carrier, and it is the one that generates violations: a motor carrier shall not require or permit a driver who is disqualified to drive a commercial motor vehicle.
That carrier-side duty is affirmative. It is not a defense that the carrier didn't know the driver was disqualified — the regulation expects the carrier to know. This is why driver disqualification is a records and monitoring problem, not just a hiring problem. A driver who was perfectly qualified on their start date can become disqualified mid-employment by a license suspension, a DUI conviction, or an out-of-service order violation, and the carrier's clock to pull them starts the moment the disqualifying condition exists.
"Permit" is the word that catches carriers
The violation is permitting a disqualified driver to drive. A carrier that fails to catch a suspended CDL, lets the driver keep running loads, and only discovers the problem at audit has permitted a disqualified driver to operate for the entire gap. The annual driving record review under §391.25 exists in part to surface exactly these conditions — but a once-a-year review can miss a suspension that lands in month two.
Disqualification for Loss of Driving Privileges (§391.15(b))
The most common disqualification has nothing to do with the offense categories — it is simply the loss of the license. Under §391.15(b), a driver is disqualified for the duration of any suspension, revocation, withdrawal, or denial of the operating privileges they need. If the CDL is suspended for 90 days, the driver is disqualified for those 90 days. When the privileges are restored, the disqualification ends.
The driver carries a notification duty here: they must notify the employing carrier within one business day of receiving notice that their license or permit has been suspended, revoked, withdrawn, or denied. But the carrier cannot rely solely on the driver's self-report — the §391.15(a) duty not to permit a disqualified driver to drive stands whether or not the driver actually told you. This is why carriers monitor license status rather than wait for a phone call.
Disqualifying Offenses and Their Periods (§391.15(c))
Section 391.15(c) lists offenses that disqualify a driver and the periods that attach. The disqualifying offenses include operating a CMV under the influence of alcohol or a controlled substance, leaving the scene of an accident involving a CMV the driver was operating, and using a CMV to commit a felony. The periods are measured from the date of conviction or forfeiture of bond or collateral.
| Situation | Disqualification Period | Regulation |
|---|---|---|
| First disqualifying offense (general) | 1 year from conviction or forfeiture | §391.15(c) |
| First offense — transporting/possessing a Schedule I substance | 6 months | §391.15(c) |
| Subsequent offense (prior disqualifying conviction within 3 years) | 3 years from conviction or forfeiture | §391.15(c) |
"Subsequent" depends on a 3-year look-back
The 3-year disqualification under §391.15(c) applies when a prior disqualifying conviction occurred within the 3 years preceding the new conviction. This means the carrier needs the driver's conviction history — not just the current event — to apply the correct period. Getting this wrong in either direction (under-disqualifying or over-disqualifying) is a documentation failure.
Out-of-Service Order Violations (§391.15(d))
Violating an out-of-service order is treated severely because it means a driver kept operating after a safety official ordered them to stop. Section 391.15(d) sets escalating periods, and a separate, longer schedule applies to drivers hauling placarded hazardous materials or operating vehicles designed for 16 or more passengers.
General OOS violations
- First violation: 90 days to 1 year
- Second within 10 years: 1 to 5 years
- Third+ within 10 years: 3 to 5 years
Hazmat / passenger (16+) OOS
- First violation: 180 days to 2 years
- Subsequent within 10 years: 3 to 5 years
Texting and Hand-Held Phone Violations (§391.15(e) and (f))
Distracted-driving convictions become disqualifying on repeat. Under §391.15(e), a second conviction for texting while operating a CMV within a 3-year period disqualifies the driver for 60 days; a third or subsequent conviction within 3 years disqualifies for 120 days. Under §391.15(f), the identical 60-day and 120-day periods apply to repeat convictions for using a hand-held mobile telephone while operating a CMV.
The count matters — track it
A single texting or hand-held phone conviction is not disqualifying under §391.15(e) or (f). The disqualification turns on it being the second (60 days) or third-plus (120 days) conviction within a rolling 3-year window. To apply the right period — or to know none applies yet — the carrier has to track each driver's conviction count over time, which is precisely the kind of running record a paper file struggles to maintain.
§391.15 vs. §383.51: Two Sides of the Same Coin
It is easy to conflate §391.15 with §383.51, but they sit in different parts of the regulations and serve different actors. Keeping them distinct matters for understanding the carrier's obligation.
| 49 CFR 391.15 | 49 CFR 383.51 | |
|---|---|---|
| Located in | Part 391 — driver qualification rules | Part 383 — CDL standards |
| Primary actor | The motor carrier (and driver) | The state and the driver's CDL |
| Core thrust | Carrier must not require/permit a disqualified driver to drive | Lists disqualifying offenses and CDL disqualification periods |
| Carrier takeaway | Pull the driver and document it | Reference for the offense periods applied to the CDL |
The two provisions overlap heavily in the offenses they cover, but the operative duty for a fleet lives in §391.15: once a disqualifying condition exists — by license action under (b), by offense under (c), by out-of-service violation under (d), or by repeat distracted-driving conviction under (e)/(f) — the carrier must stop using that driver for the applicable period and keep a record showing it acted. The license-side offense periods in §383.51 are the reference the state applies; §391.15 is the duty the auditor checks against the carrier.
How FileFlo Surfaces Disqualifying Conditions
FileFlo is the records and proof layer for driver qualification — it is not an MVR-monitoring service and does not adjudicate offenses or pull license status from the states. What it does is keep the driver qualification record organized so the conditions that trigger a §391.15 duty are visible, dated, and documented when you act on them.
- Qualification status at a glance: See which drivers have a current, valid license and medical certificate on file versus those with a flagged or lapsed status, so a suspended or expired credential doesn't sit unnoticed.
- Annual review documentation: Capture the §391.25 annual driving record review and its date in the file, the recurring checkpoint where disqualifying conditions are meant to surface.
- Dated action record: When you pull a disqualified driver, record the condition and the date you acted, building the proof that the carrier met its §391.15(a) duty rather than permitting a disqualified driver to drive.
- Audit-ready export: Produce a driver's complete qualification record — license, medical, annual review, and your documented actions — in minutes when FMCSA reviews how you handled disqualification.
Key Takeaways
- A carrier must not require or permit a disqualified driver to drive — even unknowingly (§391.15(a)).
- Loss of license = disqualification for the duration; the driver must notify the carrier within one business day (§391.15(b)).
- Major offenses generally disqualify 1 year, or 3 years for a repeat within 3 years (§391.15(c)).
- Out-of-service order violations escalate from 90 days to 5 years, with a longer schedule for hazmat/passenger drivers (§391.15(d)).
- Repeat texting or hand-held phone convictions disqualify 60 or 120 days within a 3-year window (§391.15(e), (f)).
Driver Disqualification (§391.15): FAQ
Common questions about the carrier's duty under 49 CFR 391.15 and the disqualification periods.
Under 49 CFR 391.15(a), a driver who is disqualified shall not drive a commercial motor vehicle, and a motor carrier shall not require or permit a disqualified driver to drive. That second clause is the carrier's affirmative duty: it is a violation for the carrier to let a disqualified driver operate, even unknowingly. The regulation puts the burden on the carrier to know each driver's qualification status and to pull a disqualified driver off the road. Section 391.15 is about the carrier's obligation to act once a disqualifying condition exists.
Yes. Under 49 CFR 391.15(b), a driver is disqualified for the duration of any suspension, revocation, withdrawal, or denial of the license or permit they need to operate a CMV. The disqualification lasts as long as the loss of privileges lasts. The driver is also required to notify the employing carrier within one business day of receiving notice of such an action. A carrier that keeps dispatching a driver whose CDL has been suspended is permitting a disqualified driver to drive — a direct 391.15(a) violation.
Under 49 CFR 391.15(c), a first disqualifying offense — such as driving a CMV under the influence, leaving the scene of an accident involving a CMV, or a felony involving a CMV — generally results in disqualification for 1 year after the date of conviction or forfeiture of bond. If a prior disqualifying conviction occurred within the preceding 3 years, the period is 3 years. A 6-month period applies in the narrow case of a first conviction for transporting or possessing a Schedule I controlled substance. The carrier's job is to remove the driver for the applicable period.
Under 49 CFR 391.15(d), violating an out-of-service order carries escalating periods. A first violation results in disqualification of 90 days to 1 year. A second violation within a 10-year period is 1 to 5 years. A third or subsequent violation within 10 years is 3 to 5 years. For drivers transporting hazardous materials requiring placards or operating vehicles designed for 16 or more passengers, a first violation is 180 days to 2 years, and subsequent violations are 3 to 5 years. These are among the most serious carrier-facing disqualifications.
Yes, on repeat offenses. Under 49 CFR 391.15(e), a second conviction for texting while operating a CMV within a 3-year period disqualifies the driver for 60 days, and a third or subsequent conviction within 3 years disqualifies for 120 days. Under 391.15(f), the same 60-day and 120-day periods apply to repeat convictions for using a hand-held mobile phone while operating a CMV. A single violation is not disqualifying under these paragraphs, but a pattern is — and the carrier must track the count to apply the correct period.
They operate on different sides. Section 391.15 sits in the driver qualification rules and frames the carrier's duty: do not require or permit a disqualified driver to drive, and remove the driver for the applicable period. Section 383.51 sits in the CDL standards and lists the disqualifying offenses and major/serious traffic violation periods that the state applies to the driver's CDL. The two overlap heavily in substance, but for a motor carrier the operative question is the 391.15 duty: once a disqualifying condition exists, the carrier must pull the driver off the road and document it.
Don't let a disqualified driver slip through
FileFlo keeps every driver's qualification status, annual review, and credential dates organized so disqualifying conditions surface — and your action is documented. It is the records and proof layer for your DQFs: automated expiration alerts, gap detection, and one-click audit export.
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