Driver Qualification File Requirements: The Complete 49 CFR Part 391 Guide

By CarrierLens Compliance Team • Last updated: 2025-04-01

Under 49 CFR Part 391, every motor carrier that operates commercial motor vehicles (CMVs) in interstate commerce must maintain a driver qualification file (DQF) for each driver they employ. The DQF is not optional — it is a federal requirement, and FMCSA investigators check it during compliance reviews and roadside inspections. Missing documents are among the most cited violations and carry fines up to $16,000 per infraction.

Who Is Subject to 49 CFR Part 391?

49 CFR Part 391 applies to motor carriers that operate in interstate commerce and use CMVs that:

• Have a gross vehicle weight rating (GVWR) or gross combination weight rating (GCWR) over 10,001 lbs, or
• Are designed to transport 9 or more passengers (including the driver) for compensation, or
• Are designed to transport 16 or more passengers (including the driver) not for compensation, or
• Transport hazardous materials in quantities requiring placarding

Owner-operators are also considered motor carriers under this definition and must maintain their own DQF.

What Is a Driver Qualification File?

A driver qualification file (DQF) is a federally mandated personnel dossier that documents a CDL driver's legal qualifications to operate a commercial motor vehicle. It must be created before the driver makes their first revenue-generating trip and kept current throughout their employment. The carrier must retain most DQF records for at least three years after the driver leaves, and certain records (like accident records) must be kept for three years, while safety performance history records require a 3-year minimum at the new carrier.

Core DQF Document Requirements (§ 391.51)

1. DOT Employment Application (§ 391.21)

The DOT employment application is more detailed than a standard job application. It must cover at least 10 years of prior employment history and ask the driver to disclose:

• All employers for the past 3 years where the driver held a safety-sensitive position
• Any DUI/DWI convictions or license suspensions in the past 3 years
• Any accidents in the past 3 years
• Whether the driver has tested positive on a DOT drug/alcohol test or refused to test
• Whether the driver has ever been denied a license, permit, or CDL

The application must be signed and dated by the driver. A standard HR application does not satisfy this requirement — it must use a DOT-compliant form.

2. CDL License Copy (§ 391.11, § 391.51(b)(1))

The file must contain a copy of the driver's current commercial driver's license (CDL). The carrier must verify the license is:

• Valid for the class of vehicle operated (Class A, B, or C)
• Issued by only one state (CDL holders may not hold a commercial license from more than one state)
• Not suspended, revoked, or otherwise disqualified
• Bearing all required endorsements (T for tanker, H for HAZMAT, P for passenger, N for tank, X for combo)

Update the file within 15 days any time the driver renews or obtains a new license.

3. Medical Examiner's Certificate (DOT Physical) (§ 391.43, § 391.51(b)(7))

Every CDL driver must pass a DOT physical examination performed by an FMCSA-registered medical examiner listed on the National Registry. The medical certificate:

• Is valid for up to 24 months, but the examiner may certify for a shorter period
• Must be from a National Registry Medical Examiner (NRME) — a regular physician is not sufficient
• Results are transmitted to the State Driver Licensing Agency (SDLA) and linked to the CDL
• Drivers with certain conditions (hypertension, diabetes, sleep apnea) may need annual or more frequent exams

4. Road Test Certificate or Equivalent (§ 391.31, § 391.33)

Before a driver operates a CMV, the carrier must test or verify the driver's ability to operate the specific type of vehicle. Acceptable methods:

• Road test — Administer a road test and issue a certificate signed by the examiner (retained for 3 years after employment ends)
• CDL equivalence — A valid CDL for the vehicle class satisfies the road test requirement under § 391.33
• Prior employer test — A road test certificate from a previous employer within the past 3 years is acceptable

5. Motor Vehicle Record (MVR) — Initial and Annual (§ 391.23, § 391.25)

Motor vehicle records must be obtained twice:

• Pre-employment MVR — Obtained from every state where the driver held a license in the past 3 years, before the driver's first trip
• Annual MVR review — Obtain a current MVR at least once every 12 months and review it against the disqualifying offenses in § 391.15

The annual MVR review must be documented with a signed certification by the person who reviewed it. Failure to conduct the annual review is one of the most common DQF violations cited in compliance reviews.

6. Safety Performance History (Previous Employer Inquiry) (§ 391.23)

Before a driver operates a CMV, the carrier must contact every DOT-regulated employer that employed the driver in a safety-sensitive capacity in the past 3 years. The inquiry must cover:

• Accidents involving the driver in the past 3 years (date, location, fatalities/injuries, HAZMAT spills)
• Any positive drug or alcohol tests
• Any refusals to submit to testing
• Any other FMCSA violations

Previous employers are required by law to respond. If an employer does not respond after a good-faith effort, document the attempt. Retain inquiry results for 3 years.

7. Pre-Employment Drug Test Result (49 CFR Part 40, § 382.301)

Before a driver performs any safety-sensitive function, the carrier must receive a verified negative result from a pre-employment drug test. The test must:

• Be conducted at a SAMHSA-certified laboratory
• Test for the DOT 5-panel: marijuana (THC), cocaine, opiates (including heroin), phencyclidine (PCP), and amphetamines
• Have results reviewed by a Medical Review Officer (MRO)

If a driver tested negative at a previous employer within the past 30 days and has not had a gap in safety-sensitive service of more than 30 days, the carrier may use the prior test result under certain consortium arrangements.

8. FMCSA Clearinghouse Pre-Employment Query (§ 382.701)

Since January 6, 2020, carriers must query the FMCSA Drug & Alcohol Clearinghouse before a driver performs any safety-sensitive function. The full query requires the driver's written consent. If the full query result is not received within 24 hours, a limited query can serve as a temporary measure, followed by a full query within 3 business days.

The Clearinghouse pre-employment query result must be retained for 3 years.

Driver Disqualification Rules (§ 391.15)

A driver is disqualified from operating a CMV if they have been convicted of, or forfeit bond for, any of the following within a specified period:

DQF Retention Requirements

Common DQF Violations Found During Compliance Reviews

1. Missing or expired Medical Examiner's Certificate
2. Annual MVR review not completed within 12 months
3. Pre-employment drug test result not in file
4. No Clearinghouse pre-employment query on file
5. Previous employer safety performance history not obtained
6. Non-DOT compliant employment application used
7. Road test certificate missing (CDL equivalence not documented)
8. DQF not retained for 3 years after driver leaves

How Driver Qualification File Software Eliminates These Violations

Manual DQF management using spreadsheets, paper files, or generic HR software is the leading cause of compliance violations. Dedicated driver qualification file software like CarrierLens solves this by:

• Tracking expiration dates for medical certificates, CDL renewals, and annual MVR review deadlines — with automated alerts before they expire
• Storing all DQF documents securely in the cloud with instant access during roadside inspections or compliance reviews
• Providing a built-in compliance checklist for each driver so you always know exactly which documents are missing or expired
• Integrating with MVR monitoring services for automatic annual record pulls
• Tracking Clearinghouse query status and due dates for annual limited queries
• Generating audit-ready reports showing compliance status across your entire fleet in seconds

CarrierLens is used by trucking companies, owner-operators, and DOT compliance firms across the country to maintain audit-ready driver qualification files. Plans start at $99/month for fleets up to 10 trucks.