49 CFR 391: DOT Driver Qualification Files

Regulatory citation: 49 CFR Part 391, Qualifications of Drivers and Longer Combination Vehicle (LCV) Driver Instructors (Federal Motor Carrier Safety Administration)

What Are the FMCSA Driver Qualification Rules?

Part 391 sets the minimum standards a person must meet to drive a commercial motor vehicle (CMV) in interstate commerce, and the records a motor carrier must keep to prove it. It applies to drivers of vehicles with a gross vehicle weight rating or gross combination weight rating of 10,001 pounds or more, vehicles designed or used to carry more than 8 passengers including the driver for compensation or more than 15 without compensation, and vehicles carrying placarded hazardous materials. That means it covers many non-CDL drivers of box trucks, pickups with trailers and service vans, as well as CDL holders.

The central record is the driver qualification (DQ) file. A carrier must keep one for every driver it employs, including owner-operators under lease and drivers who only drive occasionally. Missing or incomplete DQ files are among the most common violations found in FMCSA compliance investigations.

Why Driver Qualification Matters

Hiring is the first and most important safety control a carrier has. A driver with a poor driving record, an expired medical certificate or no real experience with the equipment brings risk into the fleet before any training or monitoring begins. Driver qualification is also central in crash litigation, where plaintiffs often argue negligent hiring or retention by pointing to gaps in the DQ file.

Core Obligations

1. Confirm Basic Qualifications (391.11)

A person may drive a CMV only if they are at least 21 years old for interstate driving, can read and speak English well enough to talk with the public, understand highway signs, respond to official questions and make entries on reports and records, can safely operate the vehicle by reason of experience or training, are physically qualified, hold one currently valid CMV operator's license, are not disqualified under 391.15, and have completed a road test or equivalent. Since June 25, 2025, roadside inspectors have placed drivers who fail English language proficiency checks out of service under the Commercial Vehicle Safety Alliance criteria.

2. Collect a Complete Employment Application (391.21)

Before a person drives, they must complete and sign an application with their name, address and date of birth, addresses for the previous 3 years, every license held in the previous 3 years, the nature and extent of their driving experience, a list of accidents and traffic convictions for the previous 3 years, details of any license denial, suspension or revocation, and a list of employers for the previous 3 years. For CDL applicants, the application must also cover any employer they drove a CMV for during the 7 years before that. The application must include the required notice about the driver's rights to review and correct previous employer information.

3. Run Pre-Hire Inquiries (391.23)

Within 30 days of the date employment begins, the carrier must obtain the driver's motor vehicle record (MVR) from every state where the driver held a license or permit in the past 3 years. The carrier must also investigate the driver's safety performance history with all DOT-regulated employers from the previous 3 years, including accident history and, for drivers subject to drug and alcohol testing, testing history. For CDL drivers, a pre-employment full query of the FMCSA Drug and Alcohol Clearinghouse covers the drug and alcohol history from FMCSA-regulated employers. Previous employers must respond within 30 days, and the carrier must document good-faith efforts if they do not.

4. Verify Driving Skill (391.31 and 391.33)

A driver must pass a road test given by the carrier or a qualified person and receive a certificate of road test. A carrier may instead accept a valid CDL for the type of vehicle the driver will operate, or a certificate of road test issued to the driver within the previous 3 years. A copy of the license or certificate accepted as equivalent must go in the DQ file.

5. Confirm Medical Qualification (391.41 to 391.49)

A driver must be medically examined and certified as physically qualified by a medical examiner listed on the National Registry of Certified Medical Examiners. Certificates are valid for up to 24 months, and examiners may issue shorter certificates for conditions such as high blood pressure. Since June 2025, medical examiners have sent exam results for CDL and CLP holders electronically to FMCSA, which passes them to the state licensing agency for the driver's record. For CDL and CLP drivers, the carrier verifies medical status through the MVR. As of October 12, 2026, only drivers licensed in Alaska may still rely on a paper medical certificate, and only under a one-year exemption. Non-CDL drivers still receive and carry a paper medical examiner's certificate, and the carrier keeps a copy in the DQ file along with a note verifying that the examiner is on the National Registry.

6. Review Driving Records Every Year (391.25)

At least once every 12 months, the carrier must obtain an MVR from each state where the driver held a license or permit in the past year and review it to decide whether the driver meets the minimum requirements for safe driving and is not disqualified. The carrier must keep a copy of the MVR and a note, including the reviewer's name and the date, showing the review was done. The separate annual list of violations that drivers once had to provide under 391.27 was removed in 2022.

7. Know the Disqualifying Offenses (391.15)

A driver is disqualified while their license is suspended, revoked or cancelled. Conviction of certain offenses while operating a CMV, such as driving under the influence, leaving the scene of an accident, or using a CMV to commit a felony, also leads to disqualification for set periods. CDL holders face separate and stricter disqualifications under 49 CFR 383.51.

8. Assemble and Keep the DQ File (391.51)

The DQ file must include the application, the pre-hire MVRs, the road test certificate or equivalent, the annual MVR and review note, medical certification records and the National Registry verification note, and any medical variance. The safety performance history records go in a separate investigation file that must be kept secure. The DQ file must be kept for as long as the driver is employed and for 3 years afterward. The annual review, annual MVRs, medical certificates and their verification notes may be removed 3 years after they were made.

Common Compliance Approaches

Use a Hiring Checklist With Hard Stops

Build a checklist that blocks dispatch until every pre-hire item is complete, including the Clearinghouse query, pre-employment drug test result for CDL drivers, MVRs, medical status and road test or equivalent.

Track Expirations Automatically

Set alerts at 60 and 30 days before each medical certificate and annual review date. Many violations come from a single lapsed date, not a missing document.

Enroll in Continuous MVR Monitoring

Many states and vendors offer employer notification services that alert carriers to new convictions or suspensions between annual reviews. These do not replace the annual MVR but help the carrier act sooner.

Include Non-CDL Drivers

Fleets with service vans, hotshot pickups or rental box trucks over 10,000 pounds often forget that those drivers need full DQ files and paper medical certificates.

Example: Driver Qualification in Practice

A plumbing contractor runs 12 service trucks with trailers that push the combined rating over 10,001 pounds, and its crews cross state lines to jobs in a neighboring state. None of the drivers hold CDLs, but they are still covered by Part 391. During a new-entrant safety audit, the auditor finds that four drivers have no medical certificates on file and two have no annual MVR review. The contractor sends the four drivers for DOT physicals with National Registry examiners, files their certificates with verification notes, pulls MVRs for all 12 drivers and records each review. It then sets up compliance software to flag expirations. When it hires a new technician the next month, the office collects the application, orders MVRs from the two states where he held licenses, sends safety performance history requests to his previous employer and gives him a road test before he drives.

Related regulations: DOT drug and alcohol testing, DOT hours of service, DOT vehicle inspection and maintenance.

Note: This summary covers federal FMCSA requirements for interstate commerce. Intrastate drivers follow their state's rules, which often mirror Part 391 but may allow drivers aged 18 to 20 and have other differences. CDL licensing, entry-level driver training and non-domiciled CDL rules are in Parts 380 and 383. Always check the current regulation text and FMCSA guidance.

Frequently Asked Questions

Do non-CDL drivers need a driver qualification file?

Yes, if they drive a CMV in interstate commerce, such as a vehicle with a gross weight rating of 10,001 pounds or more. The CDL threshold of 26,001 pounds does not decide whether Part 391 applies.

How long must a DQ file be kept?

For as long as the driver is employed and for 3 years after the employment ends. Some items, such as annual reviews and old medical certificates, may be removed 3 years after they were made.

Do I still need a paper medical card for CDL drivers?

Generally no. Since the medical certification integration rule took effect, CDL and CLP medical status appears on the driver's MVR, which the carrier keeps in the DQ file. As of October 12, 2026, only Alaska-licensed drivers may still rely on a paper certificate under a temporary exemption. Non-CDL drivers still need paper certificates.

Can a CDL replace the road test?

In most cases, yes. A carrier may accept a valid CDL as equivalent to its road test and keep a copy in the DQ file, though it may still choose to road test drivers on its own equipment.