DOT Audit Preparation Checklist: The Six Factors
An FMCSA compliance review examines your safety management across six factors — General, Driver, Operational, Vehicle, HazMat, and Accident — and assigns a Satisfactory, Conditional, or Unsatisfactory rating with real commercial consequences. Preparation means complete DQ files, HOS records with supporting documents, current vehicle inspections, Clearinghouse queries, and an accident register with documented follow-up. Per FMCSA — verify current requirements against official sources; this is distinct from the new-entrant safety audit.
An FMCSA compliance review — the industry calls it a DOT audit — is not a roadside inspection scaled up. It is a systematic examination of your entire safety management operation, conducted at your place of business, scored across six factors, and capable of producing the safety rating that follows your company for years.
Most carriers meet their first compliance review unprepared: driver files incomplete, maintenance records scattered, hours-of-service supporting documents missing. The review does not grade on effort. It grades on documents, and the documents either exist or they do not.
This guide covers the general compliance review — distinct from the new-entrant safety audit that new carriers face in their first months of operation. Per FMCSA — verify current requirements against official FMCSA sources before your review.
What a Compliance Review Actually Is
A compliance review is an on-site examination by FMCSA (or a state partner) of your safety management controls. The investigator samples your records — driver qualification files, hours-of-service records, vehicle maintenance files, drug and alcohol program records, accident records, and more — and evaluates whether your company has working systems to stay compliant, not just whether individual records look clean.
The review produces a safety rating: Satisfactory, Conditional, or Unsatisfactory. Satisfactory means your safety management controls are adequate. Conditional means they are inadequate in ways that could lead to safety violations — and many shippers and brokers will not use Conditional carriers, which makes the rating a commercial problem, not just a regulatory one. Unsatisfactory can put you out of service.
Reviews are triggered by many things: poor CSA scores, crashes, complaints, or simply your turn in the rotation. You usually get some notice — use every day of it. The carriers who do well are the ones who were ready before the letter arrived.
Factor 1: General — Your Company's Foundation
The General factor covers your company's basic compliance posture: valid operating authority and insurance on file with FMCSA (MCS-90 endorsement, BMC-91 filing), current MCS-150 registration, proper DOT number display, and accident register maintenance. It sounds administrative because it is — and carriers fail it by letting the basics lapse.
Checklist for this factor: MCS-150 updated within the required biennial cycle, active authority matching your operations, proof of financial responsibility current, DOT numbers properly displayed on every power unit, and the accident register complete and retained. Our accident register guide details exactly what FMCSA requires there.
The investigator will also look at whether you have designated safety responsibility — someone in the company who owns compliance. For a one-truck carrier, that is you. Have an answer ready for 'who manages safety here,' because 'nobody in particular' is the wrong one.
Factor 2: Driver — Qualification and Fitness
The Driver factor examines your driver qualification files and your controls over who drives your trucks. Every driver needs a complete DQ file: application, motor vehicle record, medical examiner's certificate, road test or equivalent, annual reviews, and Clearinghouse queries. Missing items in DQ files are among the most common review findings in the industry.
Beyond the files, the investigator tests your systems: how do you verify a new hire's employment history, how do you track medical certificate expirations, how do you run the required annual MVR reviews, and how do you handle Clearinghouse results? A carrier with complete files but no system for keeping them current will still draw findings — the review grades the system, not just the snapshot.
Preparation here is continuous MVR monitoring and a tickler system for every expiration. If you have not audited your own DQ files in the last year, do it now — before the investigator does. Our new driver onboarding checklist gives you the assembly sequence for getting files right from day one.
Factor 3: Operational — Hours of Service and Records
The Operational factor is hours of service: ELD records, supporting documents, and your controls against HOS violations. The investigator samples log data and cross-checks it against supporting documents — fuel receipts, toll records, dispatch records, bills of lading — looking for discrepancies that indicate false logs or hours violations.
Common findings: incomplete ELD records, unassigned driving time never resolved, supporting documents missing or mismatched, and no system for reviewing logs for violations. The ELD mandate did not eliminate HOS enforcement; it moved it from the logbook to the data, and investigators are fluent in the data.
Your preparation: resolve unassigned drive time regularly, retain supporting documents for the required period, run your own log audits monthly, and document your disciplinary process for HOS violations. A carrier that finds and corrects its own violations before the review looks fundamentally different from one that never looked.
Factors 4-6: Vehicle, HazMat, and Accident
The Vehicle factor covers your maintenance program: annual inspections current on every unit, driver vehicle inspection reports completed and retained, maintenance records showing repairs actually performed, and brake and tire programs that work. Investigators look for the system — scheduled maintenance intervals, DVIR review procedures, out-of-service repair documentation — not just a stack of receipts.
The Hazardous Materials factor applies if you haul hazmat: shipping papers, placarding, hazmat employee training records, and security plans. Even carriers that haul hazmat occasionally need the training records current — 'we only do it sometimes' does not reduce the requirement. If you never haul hazmat, confirm that clearly and move on.
The Accident factor examines your accident register and your countermeasures: are recordable accidents logged, do you review preventability, and have you implemented corrective actions? A register with accidents listed and no evidence of any follow-up reads as a company that records crashes and learns nothing. Document your reviews and your actions.
The Week Before: Your Preparation Sprint
With notice in hand, run your own mock review. Pull a sample of DQ files and check every required item. Pull a sample of logs and cross-check supporting documents. Verify every vehicle's annual inspection is current. Confirm your accident register is complete and your MCS-150 is current. Fix what you find — investigators credit good-faith correction less than you would hope, but a corrected file still beats an uncorrected one.
Organize everything for the investigator's arrival: a quiet workspace, files organized by factor, and one knowledgeable person available to answer questions. Do not hover, do not argue findings on the spot, and do not volunteer problems beyond what is asked — answer honestly, provide what is requested, and take notes on every finding.
After the review, treat the findings as a work plan with deadlines. Corrective action documented and completed on time is what separates a Conditional rating that improves from one that hardens into a business problem. And remember the distinct new-entrant audit if you are in your first months of authority — our new-entrant safety audit guide covers that separate process.
Key takeaways
- Six factors: General, Driver, Operational, Vehicle, HazMat, Accident.
- The rating is commercial, not just regulatory — Conditional loses you shippers.
- The review grades your systems, not just your snapshots.
- Most findings are DQ files, HOS supporting documents, and lapsed inspections.
- Run your own mock review across all six factors before the investigator arrives.
- Document corrective actions after the review — on time.
Questions carriers ask
What are the six factors of a DOT compliance review?
General, Driver, Operational, Vehicle, Hazardous Materials, and Accident. The investigator evaluates your safety management controls across all six and assigns a Satisfactory, Conditional, or Unsatisfactory rating.
How is a compliance review different from a new-entrant audit?
The new-entrant safety audit happens in a new carrier's first months of operation and focuses on basic safety management implementation. A compliance review is the ongoing enforcement examination any carrier can face, scored across the six factors with a formal safety rating.
What safety rating can result from a review?
Satisfactory, Conditional, or Unsatisfactory. Conditional ratings cause many shippers and brokers to stop using the carrier, and Unsatisfactory can lead to out-of-service orders — so the commercial stakes are high.
How much notice do carriers get before a review?
Carriers typically receive advance notice of an on-site review. Use every day of it running a mock review of your own files across all six factors.
What are the most common review findings?
Incomplete driver qualification files, hours-of-service record and supporting-document gaps, lapsed vehicle inspections, missing Clearinghouse queries, and accident registers without evidence of follow-up.
Where do I verify current audit requirements?
FMCSA's official site (fmcsa.dot.gov) publishes current compliance review procedures and the safety fitness regulations. Verify there — requirements change.