DOT Audit Preparation: The Complete Carrier Checklist
Everything a motor carrier needs to prepare for a DOT compliance review — documents, driver files, ELD records, vehicle maintenance, and how to identify your biggest risks before the auditor arrives.
A DOT compliance review — whether a roadside inspection, a targeted audit, or a full compliance safety audit (CSA) — evaluates whether a motor carrier is operating within federal and provincial safety regulations. Preparation is not about hiding problems; it's about knowing your exposure before the auditor does and having your documentation in order.
Driver Files: What Must Be Present
For each driver, auditors will typically request:
• Commercial driver's license (current, correct class) • Medical examiner's certificate (current, within 24 months) • Drug and alcohol testing records (pre-employment, random, post-accident) • Previous employer safety inquiry responses • Annual motor vehicle record review • Driver's written test results (if applicable) • Training records for hazmat, if applicable
Missing or expired medical certificates are the single most common administrative violation found in CSA audits.
ELD Records: The 8-Day Lookback
Auditors will typically request 6 months of driver logs. At minimum, be prepared to produce:
• The previous 8 days of ELD records for each driver (the minimum drivers must have accessible) • Supporting documents for the audit period (fuel, toll, scale, BOL) • Vehicle inspection reports (DVIR) for the period • Any malfunction records or data diagnostic events from the ELD
The audit engine review should match what the ELD vendor provides. Unexplained gaps, malfunction periods without corresponding paper logs, and missing certification signatures are all red flags.
Vehicle Maintenance Records
The FMCSA and Transport Canada both require systematic preventive maintenance programs. Auditors check:
• Preventive maintenance intervals and completion records • Annual inspection records (within the past 12 months for each vehicle) • Out-of-service order documentation and resolution records • Driver DVIR and vehicle defect resolution documentation • Tire, brake, and lighting inspection records
How to Identify Your Biggest Risks First
Before an audit, run your ELD data through an independent compliance review to surface:
• Any HOS violations by driver over the past 90 days • Drivers with high edit rates or unidentified driving time • Missing or incomplete supporting documents • Vehicles with expired inspection records • Any falsification indicators (ghost movement, odometer jumps)
Prioritize resolving Critical violations first — these are the categories where monetary penalties are highest and where repeat violations trigger out-of-service orders.
Ready to apply this to your fleet?
Run a pre-audit compliance scan to identify your biggest risks before a DOT auditor does.
