A DOT inspection is a check by the Federal Motor Carrier Safety Administration (FMCSA). It ensures that trucks, trailers, and drivers follow safety rules.
These inspections are important. DOT violations can hurt Compliance, Safety, Accountability (CSA) scores. They can also lead to service orders and may stop a truck immediately. For drivers and any trucking company, a failed inspection means lost time, higher costs, and more headaches.
This guide explains what a DOT inspection is, the most common violations, their consequences, and how drivers and fleets can avoid them.
What Is a DOT Inspection?
A DOT inspection is a formal review by the Department of Transportation. It checks both driver qualifications and vehicle condition. The goal is to improve safety and prevent accidents on public roads.
Levels of DOT inspections:
- Level I: Full driver and vehicle inspection.
- Level II: Walk-around inspection of driver and vehicle.
- Level III: Driver-only inspection (license, logs, medical card).
- Level IV: Special one-time inspection.
- Level V: Vehicle-only inspection without driver.
- Level VI: Inspection for radioactive or special cargo.
DOT inspections protect road safety, reduce accidents, and keep truck drivers accountable.
The 10 Most Common DOT Inspection Violations
These are the violations most often found in DOT reports.
1. Brake System Violations
Worn pads, leaks, or poor adjustment. Brakes remain the top violation in FMCSA charts.
2. Tire and Wheel Violations
Underinflation, bald tread depth, or damaged rims cause failed inspections.
3. Lighting and Signal Violations
Broken headlights, missing reflectors, or other lighting violations reduce visibility.
4. Cargo Securement Violations
Improper tie-downs or shifting loads create major safety risks.
5. Hours-of-Service (HOS) Violations
Drivers exceed allowed hours, falsify record of duty status, or miss electronic logging device (ELD) entries.
6. Driver Qualification Violations
Missing CDL, expired medical certificate, or driving without the correct class license.
7. Recordkeeping Violations
Incomplete or falsified reports from pre trip or post trip inspection logs.
8. Suspension & Steering Violations
Cracked springs, loose steering parts, or worn bushings.
9. Hazardous Materials Violations
Improper labeling or leaking containers of regulated materials.
10. Alcohol & Drug Testing Violations
Drivers refuse or fail random testing requirements.
DOT Violations by Category (With CSA Impact)
| Category | Example Violations | CSA Impact |
|---|---|---|
| Vehicle Maintenance | Brakes, tires, lights | High (OOS risk) |
| Driver Compliance | HOS, CDL, medical card | High |
| Documentation | Logbooks, inspection reports | Moderate |
| Hazardous Materials | Labeling, packaging failures | Severe |
Consequences of Common DOT Violations
The consequences of DOT violations affect both drivers and fleets.
- Out-of-service orders that stop a truck immediately.
- Fines ranging from $1,000 to $10,000 or more.
- Lower CSA scores, which increase inspections, raise insurance rates, and reduce contracts for carriers.
How to Avoid the Most Common DOT Inspection Violations
DOT violations can be avoided with consistent habits and proactive planning.
Proactive Vehicle Maintenance
Do daily walkarounds and keep up with scheduled preventive maintenance.
Accurate Recordkeeping
Use ELD systems correctly, review logs daily, and maintain inspection reports.
Driver Training and Awareness
Teach HOS rules, proper cargo securement, and reinforce seat belt use.
Use of Compliance Tools
Adopt fleet management software, DVIR apps, and telematics for better tracking.
FAQs About DOT Inspection Violations
What is the most common DOT inspection violation?
Brake system violations are the most common and lead to many out-of-service orders.
How often do trucks fail DOT inspections?
About one in five trucks inspected each year receives at least one violation.
What happens if you fail a DOT inspection?
The driver or vehicle may get a service order and must correct the issue before returning to the road.
Do DOT violations affect insurance rates?
Yes. Frequent DOT violations and poor CSA scores raise insurance premiums for trucking companies.
Final Word
DOT inspections are routine, but passing them takes discipline. With proper maintenance, accurate logs, and driver awareness, compliance is possible.
Ferguson Truck Center provides DOT inspection services in Houston, TX. Our team helps truck drivers and fleets stay compliant, improve CSA scores, and avoid the cost of repeat violations.
