DOT Audit Checklist: The Complete 2026 Guide
A DOT audit is really a records review. If your paperwork is organized and complete across six areas, the audit is straightforward. This checklist walks through every area an investigator looks at.
What a DOT audit actually reviews
Whether it is a new entrant safety audit, a compliance review, or a focused investigation, a DOT auditor is checking whether your records prove you are following the Federal Motor Carrier Safety Regulations. The review is organized into six broad areas. Get each one in order and you are audit-ready.
1. General & operating authority
- Active USDOT number and operating authority (MC number) if you are a for-hire carrier
- Proof of insurance filings (BMC-91 / BMC-34 as applicable) on file with FMCSA
- Current MCS-150 biennial update — filed at least every two years, even if nothing changed
- Process agent (BOC-3) designation if required
2. Driver qualification (DQ) files
Every driver needs a complete DQ file. Missing medical certificates and Clearinghouse queries are two of the most common findings. See our full driver qualification file checklist for the item-by-item list.
3. Hours of service & ELD records
- Records of duty status (ELD logs) for the last 6 months
- Supporting documents (bills of lading, fuel receipts, dispatch records) to verify logs
- ELD registration, malfunction records, and driver ELD instruction packets
Log falsification and missing supporting documents are frequent violations — see the most common HOS violations.
4. Drug & alcohol testing program
You must run a compliant testing program with pre-employment, random, post-accident, reasonable-suspicion, and return-to-duty testing, plus Clearinghouse enrollment. Details in our drug & alcohol testing guide.
5. Vehicle maintenance records
- An annual inspection on file for every vehicle
- Driver vehicle inspection reports (DVIRs) showing defects were repaired
- Maintenance and repair history for each unit you operate
6. Accident register
Keep a register of DOT-recordable accidents for the past three years, with copies of accident reports. Even a "no accidents" register should exist and be current.
Frequently asked questions
How far back does a DOT audit look?
Most record areas are reviewed for the current period plus the recent past — hours-of-service logs for about 6 months, the accident register for 3 years, and driver qualification files for the length of employment plus 3 years after.
How long does a DOT audit take?
A new entrant safety audit is often completed in a day or less if records are organized. A full compliance review can take longer depending on fleet size and how quickly you can produce documents.
See where your records stand
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