Search violations
FMCSA SMS Appendix A + MCMIS catalog · 7 codes
Search any FMCSA violation code from the SMS Methodology (Appendix A) by code, keyword, or BASIC category. Every entry shows the CSA severity weight (points), whether the violation is out-of-service (OOS) eligible, and which of the seven BASICs it counts against — including codes that appear on roadside inspections but aren't used in SMS scoring.
7 results
Missing code? Submit it →Inadequate reservoir for air/vacuum brakes
Failing to have sufficient air/vacuum reserve
Failing to equip vehicle air brake system with adequate reserve capacity or reservoir
No means to ensure operable check valve
No/Defective air reservoir drain valve
Brake - Insufficient vacuum reserve to permit one full brake application after the engine is shut off.
Air Brake - Missing or defective drain valve.
| Code ↑ | Description ↕ | Pts ↕ | OOS | ||
|---|---|---|---|---|---|
| 393.50 | Inadequate reservoir for air/vacuum brakes Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50(a) | Failing to have sufficient air/vacuum reserve Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50(b) | Failing to equip vehicle air brake system with adequate reserve capacity or reservoir Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50(c) | No means to ensure operable check valve Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50(d) | No/Defective air reservoir drain valve Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50B-B | Brake - Insufficient vacuum reserve to permit one full brake application after the engine is shut off. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.50D-B | Air Brake - Missing or defective drain valve. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
Statistics
Most-cited violation codes
Ranked by roadside-inspection citation count across FMCSA public data.
- 393.9
Inoperable Required Lamp
- 392.2RG
State vehicle registration or License Plate violation
- 393.47(e)
Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt
- 396.17(c)
Operating a CMV without proof of a periodic inspection
- 396.17C-PI
Operating a CMV without documentation of a periodic inspection.
- 393.95(a)
No/discharged/unsecured fire extinguisher
- 393.9TS
Inoperative turn signal
- 392.2SLLSR
State/Local Laws - State registration/tag violation.
- 393.75(a)(3)
Tire-flat and/or audible air leak
- 393.78
Wipers - Inoperative / missing / damaged wipers.
- 393.95(f)
Emergency Equipment - Stopped vehicle warning devices missing or impr…
- 392.2
Violation of Local Laws - Explain:
- 392.2-SLLS2
State/Local Laws - Speeding 6-10 miles per hour over the speed limit.
- 396.3A1BOS
Brake - Defective brake(s) are equal to or greater than 20% of the se…
- 393.11
No or defective lighting devices or reflective material as required
- 396.3(a)(1)
Inspection, repair and maintenance of parts and accessories
- 393.75A3-TAOL
Tires - All others, leaking or inflation less than 50% of the maximum…
- 393.53(b)
CMV manufactured after 10/19/94 has an automatic airbrake adjustment …
- 393.75(c)
Tire-other tread depth less than 2/32 of inch measured in a major tre…
- 393.60(c)
Windshield - Damaged or Discolored