Search violations
FMCSA SMS Appendix A + MCMIS catalog · 15 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.
15 results
Missing code? Submit it →All Brakes - Insufficient brake lining thickness
Drum Brake - Inadequate lining/pad thickness on a steering axle.
Hydraulic/Electric Brake - Inadequate lining/pad thickness on a steering axle.
Air Disc Brake - Pad thickness (air disc brakes less than 1/16‿) on a steering axle.
Air Disc Brake - Pad thickness (air disc brakes less than 1/8‿) on a steering axle.
Air Disc Brake - Rotor (disc) metal to metal contact on a steering axle.
Hydraulic/Electric Brake - Rotor (disc) metal to metal contact on a steering axle.
Air Disc Brake - Pad thickness (air disc brakes less than 1/16) on a steering axle.
Air Disc Brake - Pad thickness (air disc brakes less than 1/8) on a steering axle.
Air Disc Brake - Lining/pad thickness less than 1/16 inch.
Drum Brake - Inadequate lining/pad thickness.
Hydraulic/Electric Brake - Iining/pad thickness less than 1/16 inch.
Air Disc Brake - Rotor (disc) metal to metal contact.
Hydraulic/Electric Brake - Rotor (disc) metal to metal contact.
Air Disc Brake - Lining/pad thickness less than 1/16 inch.
| Code ↑ | Description ↕ | Pts ↕ | OOS | ||
|---|---|---|---|---|---|
| 393.47(d) | All Brakes - Insufficient brake lining thickness Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BLTBD-SA | Drum Brake - Inadequate lining/pad thickness on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BLTHE-SA | Hydraulic/Electric Brake - Inadequate lining/pad thickness on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BPTAD-SA-1/16 | Air Disc Brake - Pad thickness (air disc brakes less than 1/16‿) on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BPTAD-SA-1/8 | Air Disc Brake - Pad thickness (air disc brakes less than 1/8‿) on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BRMMCAD-SA | Air Disc Brake - Rotor (disc) metal to metal contact on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1-BRMMCHE-SA | Hydraulic/Electric Brake - Rotor (disc) metal to metal contact on a steering axle. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D1BPTADSA116 | Air Disc Brake - Pad thickness (air disc brakes less than 1/16) on a steering axle. Not in SMS | Not in SMS | — | OOS | View → |
| 393.47D1BPTADSA18 | Air Disc Brake - Pad thickness (air disc brakes less than 1/8) on a steering axle. Not in SMS | Not in SMS | — | OOS | View → |
| 393.47D2-BLT-1/16AD | Air Disc Brake - Lining/pad thickness less than 1/16 inch. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D2-BLTBD | Drum Brake - Inadequate lining/pad thickness. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D2-BLTHE | Hydraulic/Electric Brake - Iining/pad thickness less than 1/16 inch. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D2-BRMMCAD | Air Disc Brake - Rotor (disc) metal to metal contact. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D2-BRMMCHE | Hydraulic/Electric Brake - Rotor (disc) metal to metal contact. Vehicle Maintenance | Vehicle Maintenance | 4 | Non-OOS | View → |
| 393.47D2BLT116AD | Air Disc Brake - Lining/pad thickness less than 1/16 inch. Not in SMS | Not in SMS | — | 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