DOT Audit Document Checklist: The Files You Better Have Ready

When the auditor walks in — or more likely, sends that email requesting documents — you don't want to be scrambling through filing cabinets. We've built this checklist from hundreds of audits we've seen carriers go through. Print it. Use it. Keep everything on this list within arm's reach.

Company-Level Documents

• USDOT registration confirmation
• MC (Motor Carrier — your operating authority number) authority grant letter
• BOC-3 proof of filing (a legal document designating a process agent in every state where you operate)
• Current insurance certificate and BMC-91 (the insurance filing your insurer submits to the FMCSA proving you have liability coverage) confirmation
• UCR (Unified Carrier Registration — an annual registration required for interstate carriers) receipt (current year)
• MCS-150 filing confirmation (your biennial update form that keeps your USDOT information current)
• Accident register (past 3 years — every DOT recordable accident)
• Written drug & alcohol policy with driver acknowledgments
• Reasonable suspicion training certificates for supervisors
• FMCSA Clearinghouse (the FMCSA's online database tracking CDL driver drug and alcohol violations) employer registration confirmation

Per-Driver Documents (DQF — Driver Qualification File)

A DQF is the collection of records you're required to maintain for every driver who operates a CMV (commercial motor vehicle — any vehicle over 10,001 lbs GVWR) on your behalf.

• Employment application with 10-year history
• CDL (Commercial Driver's License) copy (front and back, current) — required for drivers operating vehicles over 26,001 lbs GVWR, vehicles designed to transport 16+ passengers, or hazmat vehicles
• Medical examiner's certificate (current, not expired)
• Annual MVR (Motor Vehicle Record — a driving history report pulled from the state) for each year of employment
• Road test certificate or CDL equivalent documentation
• Previous employer inquiries (3 years, or Clearinghouse full query)
• Annual certificate of violations
• Pre-employment drug test result (required for CDL drivers only)
• Annual Clearinghouse limited query record (required for CDL drivers only)
• Random/post-accident/reasonable suspicion test results (if any — applies to CDL drivers operating CMVs)

HOS (Hours of Service) Records

HOS rules limit how long drivers can be on the road before they must rest. These are the records that prove your drivers are following those limits.

• ELD (Electronic Logging Device — the device in the truck that automatically records driving time) data for the past 6 months (must be exportable in standard format)
• Supporting documents: toll receipts, fuel receipts, delivery receipts (6 months)
• Evidence of daily log review by carrier
• Corrective action documentation for any HOS violations found

Vehicle Records

• Annual DOT inspection reports (current, plus 14 months of history)
• DVIRs (Driver Vehicle Inspection Reports — the written report a driver completes after each trip noting any vehicle defects) (past 3 months)
• Preventive maintenance schedule per vehicle
• Maintenance and repair records (1 year while active, 6 months after disposal)
• Vehicle registration for each unit

Drug & Alcohol Program Records

These records apply specifically to CDL (Commercial Driver's License) drivers who operate CMVs over 26,001 lbs GVWR, transport 16+ passengers, or haul hazmat. Non-CDL drivers operating lighter CMVs (10,001-26,000 lbs) are not subject to FMCSA drug and alcohol testing requirements.

• Random selection records with dates (2 years)
• All drug test results: negatives (1 year), positives (5 years)
• MRO (Medical Review Officer — the licensed physician who reviews and verifies drug test results) name and contact information
• Collection site information
• Consortium/TPA (Third Party Administrator — a service that manages your testing program) agreement (if using one)

Organization Tips

Keep everything in a logical structure — either physical or digital. We recommend digital with backups. Name files consistently: DriverLastName_DocumentType_Date. If an auditor asks for John Smith's 2025 MVR, you should be able to produce it in under 60 seconds. That kind of organization makes a strong first impression on an auditor.