Every document required to keep a CDL driver qualified under 49 CFR Part 391 — with retention rules, audit pitfalls, and the citations DOT investigators write most often.
A DQ file is the paper (or digital) proof that one CDL driver is medically, legally, and operationally qualified to drive a commercial motor vehicle. It must be ready for FMCSA inspection within 48 hours of request, kept for the duration of employment plus 3 years, and updated annually for MVRs and violation certifications.
Each item below cites the regulation, the retention rule, and the specific gotcha that trips carriers up in an audit.
Must capture 10 years of employment history for CDL drivers, including every motor carrier the driver worked for, addresses, dates, reasons for leaving, and FMCSR/HM regulation status.
Written investigation of every DOT-regulated employer for the past 3 years. Must include accident history and, for CDL drivers, drug & alcohol testing history under Part 40.
MVR from every state in which the driver held a CDL or operator's license in the past 3 years. Must be obtained within 30 days of hire.
A fresh MVR pulled at least once every 12 months, plus a written note of the carrier's review and any actions taken.
Driver-signed list of every moving traffic violation in the previous 12 months — separate from the MVR and required every year.
Either a passed road test administered by the carrier, or an equivalent CDL/road test certificate from another employer.
Issued by an examiner on the FMCSA National Registry. For non-excepted interstate CDL drivers, the state of licensure now holds the current med cert electronically.
Documented verification that the medical examiner was listed on the National Registry on the date of the exam.
Includes the Clearinghouse pre-employment query (full or limited) and any positive tests or refusals from DOT-regulated employers in the prior 3 years.
Required for any driver who obtained a Class A or B CDL, upgraded class, or added a P/S/H endorsement on or after Feb 7, 2022.
Records that the driver is not disqualified, plus any driver-reported convictions sent to the carrier within 30 days.
Proof of valid CDL with the correct class and endorsements for the vehicle the driver operates.
Application, road test, prior-employer inquiries, ELDT cert, CDL copy → duration of employment + 3 years.
Annual MVR, annual violation cert, National Registry verification → 3 years from the date of the record.
Keep the current MCSA-5876 plus prior certificates going back 3 years.
Negative results: 1 year. Positives, refusals, and SAP records: 5 years (49 CFR 382.401).
FMCSA's MCMIS database makes the same handful of citations show up on audit reports over and over. All four are preventable with automatic expiration tracking.
Med cards expire silently. Without an automatic 30/60/90-day alert, drivers run on expired certs.
Pulling the MVR is not enough — FMCSA wants a dated, signed note proving someone reviewed it.
Smaller carriers often skip the written inquiry. Auditors check for one document per past employer, not a summary.
Required before the first day a driver performs a safety-sensitive function. Often forgotten on rehires.
Driver Compliance Manager keeps every document above on file, alerts you 30/60/90 days before anything expires, and exports a clean DQ packet for inspectors in one click.
Start your 7-day free trialNothing on this page is legal advice. Always verify against the current 49 CFR Part 391.