Search violations
FMCSA SMS Appendix A + MCMIS catalog · 5 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.
5 results
Missing code? Submit it →Defective and/or prohibited heaters
Improper location of bus heater fuel tank
Tampering with bus heater
Heaters - Use of Prohibited Type of Heater.
Heaters - Heater does not comply with specifications.
| Code ↑ | Description ↕ | Pts ↕ | OOS | ||
|---|---|---|---|---|---|
| 393.77 | Defective and/or prohibited heaters Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.77(b)(11) | Improper location of bus heater fuel tank Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.77(b)(5) | Tampering with bus heater Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.77A-HT | Heaters - Use of Prohibited Type of Heater. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.77B-HT | Heaters - Heater does not comply with specifications. Vehicle Maintenance | Vehicle Maintenance | 3 | 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