Annex OrbisFMCSA · SAFETY STATISTICS
What puts trucks and drivers out of service?
The most frequent out-of-service violations in our indexed FMCSA inspection records, ranked by violation code.
Recorded violations13,571,170
Out-of-service violations2,411,961
Violation codes2,379
All violation codes
Highest OOS count first. Codes with no recorded OOS occurrences appear last.
| Violation code | Description | OOS occurrences | All occurrences | Share of all OOS |
|---|---|---|---|---|
| 383.93B2 | No passenger vehicle endorsement on CDL | 40 | 42 | 0.0% |
| 391.11B7 | No or invalid driver license - Disqualified to drive under 49 CFR 391.15 | 40 | 40 | 0.0% |
| 393.75B-TFV | Tires - Front, less than 4/32 inch tread depth | 40 | 11,557 | 0.0% |
| 396.3A1-CDCHS | Coupling - Semi-Trailer, cracks anywhere on the hitch system (excluding fifth wheel and pintle hooks) | 40 | 41 | 0.0% |
| 393.25B | Lamps are not visible as required | 39 | 534 | 0.0% |
| 393.9B-LPLOWR | Lighting - Projecting load - Any lamp on projecting load obscured when required to be on | 39 | 43 | 0.0% |
| 172.506A1 | Placards not affixed to vehicle | 38 | 218 | 0.0% |
| 393.70B1I-CDPBRW | Coupling - Mounting plate or pivot bracket repair weld is cracked. | 38 | 42 | 0.0% |
| 393.87A-FPLA | Flag - Required flag(s) - any missing flag on a projecting load when more than one is required | 38 | 1,885 | 0.0% |
| 393.91-BTSNS | Buses - Equipped with temporary seating not secured to the vehicle in a workman-like manner | 38 | 40 | 0.0% |
| 393.9B-LTSONR | Lighting - Turn signal - Any obscured not on the rearmost vehicle. | 38 | 542 | 0.0% |
| 172.516C6 | Placard damaged, deteriorated, or obscured | 37 | 2,157 | 0.0% |
| 178.345-5D | DOT406/407/412 manhole securement | 37 | 46 | 0.0% |
| 392.2-SLLIRP | State/Local Laws - IRP apportioned tag or registration violation | 37 | 78,405 | 0.0% |
| 393.128B2 | Tiedown(s) not affixed to mounting points | 37 | 44 | 0.0% |
| 393.207F-SLAS | Suspension - Leaking 3 PSI in 5 minutes | 37 | 8,783 | 0.0% |
| 393.48ABLMCHE-SA | Hydraulic/Electric Brake - Loose or missing brake caliper mounting bolt on steering axle | 37 | 38 | 0.0% |
| 393.70B1I-CDRW | Coupling - A repair weld is cracked. | 37 | 49 | 0.0% |
| 393.70B1II-CDUC-MT20 | Coupling - Upper coupler has more than 20% of the total original welds are cracked on either side of the vehicle. | 37 | 38 | 0.0% |
| 395.13D1-DDOOS | HOS (Manner) - Driving after being declared out of service. | 37 | 51 | 0.0% |
| 172.514A | Offering a bulk package that is not properly placarded | 36 | 80 | 0.0% |
| 173.24B2-HMBPMC | HM (Bulk Packages) - More than 25% percent of the supporting and/or anchoring mechanisms are ineffective. NOTE: A bulk package which is also an intermodal contain | 36 | 39 | 0.0% |
| 392.2-SLLTL | State/Local Laws - Misc. traffic law violation | 36 | 59,292 | 0.0% |
| 393.136 | No/improper securement of large boulders | 36 | 39 | 0.0% |
| 393.203B-CBP | Cab and Body Parts - Cab/body mounts loose/broken/missing | 36 | 8,845 | 0.0% |
| 396.3A1-STTSCNL | Steering - Tilt steering wheel column does not lock in one position | 36 | 36 | 0.0% |
| 396.3A1-TARPSW | Tires - Presence of rubber-coated cord or cured rubber plug in the sidewall on a dual set of tires. | 36 | 49 | 0.0% |
| 383.23A2-P | Operating a CMV without a valid CDL: No passenger vehicle endorsement | 35 | 36 | 0.0% |
| 393.104F1-C | Cargo - Knotted tiedown | 35 | 1,121 | 0.0% |
| 393.47C-BSALMAD-SA | Air Disc Brake - Slack adjuster length mismatched on a steering axle | 35 | 68 | 0.0% |
| 396.3A1-AALPHTS | More than 25% of the locking pin holes in use have torn or split material from the hole in use to an adjacent hole or from the hole in use to the edge of the rail | 35 | 39 | 0.0% |
| 393.70B1I-CDSLI-LT25 | Coupling - Slider latching fasteners - 25% or less ineffective on either side. | 34 | 384 | 0.0% |
| 393.70C-CDTC | Coupling - Turntable cracked flange | 34 | 55 | 0.0% |
| 396.9C2-OOSO | OOS Order (Repairs) - Operating a CMV after being declared out-of-service when not having completed all required repairs | 34 | 1,437 | 0.0% |
| 393.48A-BIAD | Air Disc Brake - Inoperative other than a steering axle | 33 | 3,156 | 0.0% |
| 393.67C7V-FPVI | Fuel - Missing/improper filler cap on a bus | 33 | 37 | 0.0% |
| 393.9B-LSLO | Lighting - Stop lamps - Any obscured | 33 | 1,001 | 0.0% |
| 396.3A1-CDTPHC | Coupling - Semi-Trailer, pintle hook cracked | 33 | 33 | 0.0% |
| 392.2SAFCH-ATTCH | Coupling - Semi-Trailer, safety devices not attached/not able to be secured | 32 | 501 | 0.0% |
| 393.48A-BSRFSHE-SA | Hydraulic/Electric Brake - Severe rusting of brake rotor (disc) on a steering axle | 32 | 34 | 0.0% |
| 395.22G | Portable ELD not mounted in a fixed position and visible to driver | 32 | 11,926 | 0.0% |
| 395.24 | HOS (ELD) - ELD Form and Manner | 32 | 129,079 | 0.0% |
| 396.3A1-AABRC | A sliding suspension attachment member (undercarriage body rail) is cracked completely through along a 4 foot (1.2 m) continuous length. | 32 | 44 | 0.0% |
| 172.200A-HMSPS | HM (Shipping Papers) - Shipper failed to offer properly prepared shipping document(s) | 31 | 446 | 0.0% |
| 390.35 | Fraudulent record(s) | 31 | 1,027 | 0.0% |
| 393.201C | Frame rail flange improperly bent/cut/notched other than by vehicle manufacturer | 31 | 2,151 | 0.0% |
| 393.207D-S | Suspension - Broken coil spring | 31 | 37 | 0.0% |
| 396.3A1-TS | Tilt or Telescopic Steering defective | 31 | 32 | 0.0% |
| 396.7-CDPHNU | Coupling - Semi-Trailer, pintle hook not in use, when required | 31 | 31 | 0.0% |
| 172.506A-HMPMC | HM (Placarding) - Failure to provide/affix placards when required. | 30 | 503 | 0.0% |
How to read this report
Each indexed violation identity counts once. Only a violation explicitly marked out of service contributes to the OOS count. Repeated copies are counted once; conflicting code or OOS values are excluded. Unknown flags remain in all occurrences but not in the OOS count. Missing codes appear as “Code not reported”.
These are violation counts, not unique inspections, trucks, drivers, or carrier-wide out-of-service orders. Coverage describes the currently indexed inspection dataset, not all historical FMCSA records. Frequencies do not establish crash causation or a carrier’s safety rating.
Unknown OOS flags: 112 · Conflicting records excluded: 0
FMCSA source data ↗