Search violations
FMCSA SMS Appendix A + MCMIS catalog · 12 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.
12 results
Missing code? Submit it →Defective / Improper fifth wheel assembly upper half
Coupling - Bolted upper coupler has any loose bolt.
Coupling - Bolted upper coupler has less than the required number of bolts.
Coupling - Upper coupler has 20% or less of the total original welds are cracked on either side of the vehicle.
Coupling - Upper coupler has more than 20% of the total original welds are cracked on either side of the vehicle.
Coupling - Upper coupler repair weld is cracked.
Fifth wheel - any movement between components
Upper coupler assembly parent metal cracked, extending more than 20 percent of the distance across the metal in the direction of the crack.
Upper coupler assembly crack or gap caused by corrosion more than 1/8 inch (3.2 mm) or more in width.
Upper coupler assembly welds are crack on either side, front or back of the upper coupler, more than 20 percent of the total length of all original welds.
Upper coupler assembly repair weld cracked.
Coupling - Countersunk screw coupler has any loose or broken bolt
| Code ↑ | Description ↕ | Pts ↕ | OOS | ||
|---|---|---|---|---|---|
| 393.70B1II | Defective / Improper fifth wheel assembly upper half Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-CDBL | Coupling - Bolted upper coupler has any loose bolt. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-CDBUC | Coupling - Bolted upper coupler has less than the required number of bolts. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-CDUC-LT20 | Coupling - Upper coupler has 20% or less of the total original welds are cracked on either side of the vehicle. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-CDUC-MT20 | Coupling - Upper coupler has more than 20% of the total original welds are cracked on either side of the vehicle. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-CDUCRW | Coupling - Upper coupler repair weld is cracked. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-FWCM | Fifth wheel - any movement between components Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-FWUC | Upper coupler assembly parent metal cracked, extending more than 20 percent of the distance across the metal in the direction of the crack. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-FWUCG | Upper coupler assembly crack or gap caused by corrosion more than 1/8 inch (3.2 mm) or more in width. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-FWUCW | Upper coupler assembly welds are crack on either side, front or back of the upper coupler, more than 20 percent of the total length of all original welds. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1II-FWURW | Upper coupler assembly repair weld cracked. Vehicle Maintenance | Vehicle Maintenance | 3 | Non-OOS | View → |
| 393.70B1IICDCSBL | Coupling - Countersunk screw coupler has any loose or broken bolt 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