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Top 20 commercial vehicle violations of 2025
2026-01-22T06:00:00Z
As they do most years, lamps, tires, and brakes dominated the list of commercial vehicle components failing roadside inspections in 2025.
Nearly 2 million roadside commercial motor vehicle inspections took place in 2025 (out of 3.1 million total inspections), resulting in more than 3.3 million violations of DOT safety regulations.
Being familiar with the most common violations can help drivers and motor carriers take steps to avoid them. Key among those steps are comprehensive pre-trip, post-trip, annual, and systematic inspections — to catch violations before an officer does.
The following table lists the top 20 vehicle safety violations cited during roadside inspections in 2025, including:
- The (rounded) percentage of those violations that resulted in an out-of-service (OOS) order, and
- The severity points assigned to each violation in the Compliance, Safety, Accountability (CSA) system.
| Rank | Code | Description | Violations | OOS | CSA |
| 1 | 393.9 | Required lamp(s) broken or obscured | 660,792 | 14% | 6 |
| 2 | 393.75 | Tire tread/inflation/load limit | 311,932 | 27% | 3-8 |
| 3 | 393.45 | Brake hose/tubing | 230,677 | 7% | 4 |
| 4 | 396.17 | No proof of annual inspection | 227,662 | 0% | 4 |
| 5 | 393.95 | Emergency equipment | 209,669 | 0% | 2 |
| 6 | 393.11-.13 | Conspicuity and lighting | 185,828 | 1% | 3-6 |
| 7 | 393.47 | Brake component defect(s) | 163,705 | 1% | 4 |
| 8 | 396.3(a)(1) | Other brake defects | 131,077 | 11% | 4 |
| 9 | 393.55(b), (d)-(e) | ABS malfunction circuit/lamp | 115,148 | 0% | 4 |
| 10 | 396.5 | Lubrication | 102,572 | 2% | 2-3 |
| 11 | 393.78 | Washer/wiper system | 99,720 | 0% | 1 |
| 12 | 393.100-.136 | Improper cargo securement | 91,197 | 9% | 7 |
| 13 | 393.60 | Windshield violation | 85,724 | 0% | 1 |
| 14 | 393.53 | Brake adjustors | 77,790 | 0% | 4 |
| 15 | 393.48 | Inoperative/defective brakes | 68,560 | 1% | 4 |
| 16 | 393.43 | Breakaway/emergency brake defect | 49,414 | 6% | 4 |
| 17 | 393.207 | Suspension system | 46,172 | 4% | 7 |
| 18 | 393.55(c) | No ABS on air-brake vehicle | 31,217 | 0% | 4 |
| 19 | 396.3(a)(1) | General inspection/repair/maintenance | 30,220 | 0% | 2 |
| 20 | 393.201 | Frame defect(s) | 26,944 | 1% | 2 |
















































