Truck driver qualifications: who can legally drive your truck
A CDL gets a driver through the gate. Federal rules add seven qualifications on top of it, and a short list of convictions that can take a qualified driver off the road for 60 days, a year, or for life.
Written by Gabriel Gonzalez
Driver qualification in numbers
Truck driver qualifications are set by 49 CFR 391.11: an interstate truck driver must be at least 21, read and speak enough English, be able to handle the vehicle, be physically qualified, hold one valid license, pass a road test or accepted equivalent, and not be disqualified by a listed conviction.
Owners often treat a CDL as the whole answer to whether a driver can run their freight. It is the starting point. The federal standard adds age, English, a physical, a road test, and a conviction record, and several of those can change after the driver is hired.
I have spent more than 22 years at Simplex, nearly 16 of them as COO, and I now lead revenue strategy. From that seat, a driver who doesn't qualify is a truck that doesn't move. This guide covers what the rule requires, who it reaches, what disqualifies a driver, and where endorsements fit.
The full briefing, read aloud
7 chapters. Select one to jump to it.
Generated with AI text-to-speech from this article's key insights, in order, rather than reading it word for word. Chapter times come from a transcript of the audio. The article itself was written and reviewed by Gabriel Gonzalez.
Key takeaways
Seven qualifications, binding both sides
Under 49 CFR 391.11, an unqualified person may not drive, and a carrier may not require or permit them to.
The rules start at 10,001 pounds
Interstate drivers of trucks rated or weighing 10,001 pounds or more must qualify, even when the truck needs no CDL.
Some convictions count in a personal car
A CDL holder convicted of DUI or leaving the scene in their own car is disqualified from commercial driving for a year.
Tanker and doubles endorsements are written tests
A CDL with N or T can't replace your road test for tank or doubles work, so test the driver in that equipment.
Hazmat takes training and a TSA check
First-time H applicants need entry-level theory training from a registered provider and a TSA security threat assessment.
In this articleContents
What are the federal truck driver qualifications?
Federal truck driver qualifications are the seven conditions in 49 CFR 391.11. The rule binds both sides: a person may not drive a commercial motor vehicle unless qualified, and a motor carrier may not require or permit an unqualified person to drive.
| Qualification | What the rule says | In practice |
|---|---|---|
| Age | At least 21 years old | Intrastate drivers can be as young as 18 where the state allows it |
| English | Reads and speaks English well enough to talk with the public, understand signs, answer officials, and complete records | An out-of-service violation at roadside since June 25, 2025 |
| Ability | Can safely operate the type of vehicle, through experience, training, or both | The carrier judges this, and the road test is the usual evidence |
| Physical | Physically qualified under Subpart E of Part 391 | A medical exam at least every 24 months, more often for some conditions |
| License | One currently valid commercial motor vehicle operator's license, issued by one state or jurisdiction | A CDL from 26,001 pounds, 16 or more passengers, or placarded hazmat |
| Record | Not disqualified under 49 CFR 391.15 | Suspensions, listed convictions, and out-of-service violations |
| Road test | Passed a road test with a certificate, or a license or certificate the carrier accepts as the equivalent | A CDL tested in that vehicle type, or a road test certificate from the past 3 years |
The list used to include one more item. Since May 9, 2022, drivers no longer give their employer an annual list of traffic convictions; the carrier's own yearly driving record check replaced it (Federal Register).
Each qualification leaves a record. Our DQF checklist lists the documents that prove them, and our guide to hiring truck drivers safely puts the checks in order before the first dispatch.
Who has to meet truck driver qualifications?
Every driver of a commercial motor vehicle in interstate commerce. Under 49 CFR 390.5T, that includes any vehicle or combination rated or weighing 10,001 pounds or more. The CDL line sits higher, at 26,001 pounds, so a non-CDL box truck driver who crosses state lines must still qualify. Our guide to CDL vs non-CDL requirements explains both lines.
An owner-operator with their own authority is both carrier and driver, and must meet the duties of each under 49 CFR 391.1(b). They also can't road-test themselves: under 49 CFR 391.31(b), a driver who is a motor carrier must be tested by someone else.
Where the rules bend
- Intrastate drivers: states may write their own rules for trucks that stay in the state, but every intrastate CMV driver must be at least 18, and states may keep drivers whose medical conditions predate their standards, under 49 CFR 350.305.
- Farm and seasonal exceptions: under 49 CFR 391.2, Part 391 does not apply to drivers for custom harvesting operations, beekeepers moving bees seasonally, or farm vehicle drivers outside combination vehicles. They remain subject to the texting and hand-held phone disqualifications.
- Farm combinations: a farm vehicle driver 18 or older in a combination vehicle is excused from the age 21 and road test items, among others, under 49 CFR 391.67.
What disqualifies a truck driver?
A truck driver is disqualified by a suspended or revoked license, by certain convictions, and by driving through an out-of-service order. Under 49 CFR 391.15, a driver who loses the license is disqualified until it is restored, and must tell the carrier before the end of the business day after receiving the notice.
For CLP and CDL holders, 49 CFR 383.51 sets the periods, and many of its offenses count even in a personal vehicle:
| Conviction | First | Repeat |
|---|---|---|
| DUI, refusing an alcohol test, leaving the scene, or a felony using the vehicle, in a CMV or a personal vehicle | 1 year; 3 years if hauling placarded hazmat | Life, on a second conviction |
| Alcohol concentration of 0.04 or more in a CMV, or causing a death through negligent CMV operation | 1 year; 3 years with hazmat | Life |
| A drug-distribution or human-trafficking felony using the vehicle | Life, with no reinstatement | Life, with no reinstatement |
| Serious traffic violations in a CMV: speeding 15 mph or more over, reckless driving, improper lane changes, following too closely, texting, a hand-held phone, or the wrong CDL class or endorsement | 60 days, at the second within 3 years | 120 days, at the third within 3 years |
| Railroad crossing offenses, such as failing to stop when required or lacking room to clear the tracks | At least 60 days | At least 120 days for a second in 3 years; at least 1 year for a third |
| Violating an out-of-service order | 180 days to 1 year; up to 2 years with hazmat or 16 or more passengers | 2 to 5 years for a second in 10 years; 3 to 5 with hazmat or passengers |
A state may reinstate a lifetime disqualification after 10 years if the driver completes a state-approved rehabilitation program, except for the drug-distribution and trafficking felonies. Serious traffic violations in a personal vehicle count only when the conviction costs the driver their license.
Two more gates sit outside the table. A driver in prohibited status in the Drug and Alcohol Clearinghouse may not perform safety-sensitive work under 49 CFR 382.501, and since November 18, 2024, a state may not issue, renew, or upgrade that driver's CDL. And failing the English standard has been a driver out-of-service violation at roadside since June 25, 2025 (CVSA).
How do truck driver endorsements fit the qualifications?
Truck driver endorsements add equipment or cargo to a CDL, and each needs its own test under 49 CFR 383.93. Our CDL compliance guide matches each endorsement to the load. Here is what the three freight endorsements take, and what each means for your road test:
| Endorsement | What the driver must do | Your road test |
|---|---|---|
| N: tank vehicle | Pass a knowledge test. N can go on a learner's permit, for training in an empty tank only | Test in a tank vehicle: a CDL with N can't count as the equivalent |
| T: double or triple trailers | Pass a knowledge test | Test in doubles: a CDL with T can't count as the equivalent |
| H: hazardous materials | First time: entry-level theory training, then a knowledge test and a TSA security threat assessment, or a valid TWIC | Hazmat adds no road-test item; test in the vehicle type you'll assign |
The road-test column comes from 49 CFR 391.33, which lets you accept a CDL as the road-test equivalent except for its double/triple and tank endorsements. The reason is practical: those endorsements prove the driver passed a written test, not that they can handle the equipment, which is what 391.11(b)(3) asks.
For the endorsement, a tank vehicle carries liquids or gases in tanks rated over 119 gallons each and 1,000 gallons or more in total. X on a license means N and H together. The H endorsement must be renewed at least every 5 years with a new TSA check, under 49 CFR 383.141, and the theory training must come from a provider on FMCSA's Training Provider Registry before the knowledge test.
What should your hiring standard add to the minimum?
Write your own standard by seat: the truck, the trailer, the cargo, and the lanes each driver will run. The federal list is a floor, and the rule lets you go further, for example by requiring a road test even from a driver whose license counts as the equivalent (391.33(c)).
- Profile the seat first: list the class, endorsements, and road-test equipment each truck needs before you advertise, so you recruit for the endorsement instead of working around a missing one.
- Ask your insurer early: get its driver criteria in writing before you recruit, so every hire is one your policy will accept.
- Count the idle weeks: a disqualification parks the driver for the whole period, so weigh a candidate's recent convictions against how many trucks you have to cover the gap.
- Plan for the dates after hire: medical certification lasts up to 24 months, and you must pull and review each driver's record at least every 12 months under 49 CFR 391.25. Our guide to driver compliance tracking covers who watches each date.
If you'd rather have the criteria set and checked for you, our driver qualification criteria service builds them around the trucks you run.
How Simplex helps you qualify drivers
The standard, the files that prove it, and the testing behind it. We help with each one.
Qualification criteria
Our driver qualification criteria service helps you set a hiring standard that matches each truck and load.
Driver qualification files
We help build and maintain the driver qualification file for each driver, so every check and renewal is on record.
Drug and alcohol testing
Our drug screen compliance service helps you run pre-employment tests and Clearinghouse queries before the first dispatch.
Frequently asked questions
What are the minimum qualifications to be a truck driver?+
Can you drive a truck at 18?+
How do you get a tanker endorsement?+
Can a ticket in my personal car disqualify my CDL?+
Do non-CDL truck drivers have to meet DOT qualifications?+
Where this information comes from
The requirements below come from the Federal Motor Carrier Safety Regulations and the Commercial Vehicle Safety Alliance, checked on October 20, 2026.
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1
49 CFR 391.11: General qualifications of drivers
The seven qualifications and the duty on both driver and carrier.
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2
49 CFR 391.15: Disqualification of drivers
Loss of license, criminal offenses, out-of-service violations, and phone and texting disqualifications under Part 391.
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3
49 CFR 383.51: Disqualification of drivers (CDL)
Major offenses, serious traffic violations, railroad crossing and out-of-service periods for CLP and CDL holders.
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4
49 CFR 391.2: General exceptions
Custom harvesting, beekeeping, farm vehicle, and pipeline welding truck exceptions.
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5
49 CFR 391.33: Equivalent of road test
Accepting a CDL or a 3-year-old certificate instead of a road test, except for tank and double/triple endorsements.
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6
49 CFR 383.93: Endorsements
The endorsements, which ones a learner's permit may carry, and the test each requires.
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7
49 CFR 383.141: Hazardous materials endorsement
The TSA security threat assessment or TWIC requirement and the 5-year renewal cycle.
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8
CVSA: English proficiency becomes an out-of-service violation
Non-compliance with 391.11(b)(2) is a driver out-of-service violation from June 25, 2025.
Written by
Gabriel Gonzalez
Chief Revenue Officer, Simplex Group
Chief Revenue Officer at Simplex Group, with more than 22 years at the company, including nearly 16 years as Chief Operating Officer. His background combines revenue strategy with deep operational experience, giving him a strong perspective on how compliance, risk, permits, cash flow, and operational readiness affect a carrier's ability to grow profitably.
Published · Updated
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Qualify the driver for the seat, not just the license
A CDL tells you a driver passed the state's tests. The federal qualifications, the conviction record, and your own road test in the right equipment tell you whether that driver can take your truck today.
If you want help writing a hiring standard and keeping every driver qualified after hire, talk to our team.