If you've ever been pulled over at a weigh station or roadside checkpoint, you know the stress of a DOT inspection. This guide covers the main types of CMV inspections, why violations get written up, and what to do after an inspection.
These are the inspections drivers run into most often:
Pre-trip inspections: The walk-around check you do before you drive. Its goal is to catch obvious safety issues early.
Post-trip inspections / defect reporting: After the day, you document defects you found. Follow your carrier’s policy.
Periodic inspections (initial and annual): A mechanic’s inspection to confirm the truck and trailer meet minimum safety standards.
Roadside inspection: The one that happens at a scale, weigh station, or on the road.
Carrier compliance review / audit: This is aimed at the company’s safety program. Drivers may be contacted, but it’s a carrier-level review.
Not every stop is the same, but many inspections look like this:
Initial contact: You’re directed in or stopped.
Driver and documents: Driver license, medical card, registration and permits, and shipping papers.
Logbook check: Your hours-of-service log, recent driving, edits, exemptions, and device issues.
Truck / trailer check: Lights, tires, brakes/air leaks, leaks, load securement, and general condition.
Result: Clean inspection, or violations written up, a ticket may be issued, or the driver/vehicle is placed out of service and cannot continue until fixed.
Some inspections are random. Others happen because of:
Where you are: weigh stations/ports of entry, or known enforcement areas.
What’s visible: lights out, tire condition, leaks, obvious equipment problems, or load/securement concerns.
Driving behavior: speeding or unsafe driving.
Targeting: officers may focus on certain carriers, loads, or problem patterns during enforcement campaigns.
Most violations fall into a few buckets:
Paperwork: missing/expired documents, incorrect permits, medical card issues.
Logbook problems: log not current, exemptions used incorrectly, missing documentation, unassigned driving not handled.
Truck/trailer condition: lights, tires, brakes/air system issues, leaks, required equipment.
Load securement: loose/insufficient securement, damaged straps/chains, missing protection.
Important: A violation can be written on the inspection report even if you don’t get a ticket.
Keep a copy. Your carrier may want it for records.
You might also get a ticket, but the inspection report itself still matters. Fix what was cited and document the repair.
This is the most serious outcome.
Do not drive until the issue is fixed and you’re properly released.
Follow the officer/inspector’s instructions and contact your carrier.
Save the report: keep a photo/copy.
Check the basics: verify truck/trailer/unit info, location/date/time.
Tell your carrier/safety team: follow company policy.
If out of service, stop: do not move until fixed and released.
Fix the issues and keep paperwork (repair orders/receipts).
Take photos of anything cited (before/after repair if possible).
If you believe the report has a mistake, gather proof (photos, logs, repair records, shipping papers).
Ticket: handled through the state court process (follow the ticket instructions).
Wrong info on the inspection report: can be challenged through FMCSA DataQs (a data review system). It works best with documentation.
Link: https://dataqs.fmcsa.dot.gov/
Roadside inspections check you, your logbook/paperwork, and your equipment.
Violations can be written up even without a ticket.
If you’re out of service, don’t move until fixed and released.
Save the report, tell your carrier, fix the issues, and document everything.