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 |
|---|---|---|---|---|
| 393.70B1II-CDCSBL | Coupling - Countersunk screw coupler has any loose or broken bolt | 6 | 6 | 0.0% |
| 393.71H-CDDDSIL | Coupling - Driveaway, drawbar slider ineffective latch | 6 | 6 | 0.0% |
| 393.87B | Improper warning flag placement | 6 | 269 | 0.0% |
| 393.9A-LBL | Lighting - Backup lamp inoperative | 6 | 48,334 | 0.0% |
| 395.15A2 | Driver failed to use automatic on-board recording device when required by the motor carrier | 6 | 69 | 0.0% |
| 395.5B2-HOSPVNC | Driving after 70 hours on duty in a 8 day period at time of inspection. (Passenger carrying vehicle) - Nominal Violation | 6 | 6 | 0.0% |
| 395.5B2-PASS | Driving after 70 hours on duty in a 8 day period. (Passenger carrying vehicle) | 6 | 6 | 0.0% |
| 396.3A1-CDHSWR | Semi-Trailer - Any welded repairs to the ball, ball-socket, pin or eye. | 6 | 6 | 0.0% |
| 396.3A1-CDTDMD | Coupling - Semi-Trailer, more than 1/4 inch movement between sub frame and drawbar. | 6 | 6 | 0.0% |
| 396.3A1-WRWRS | Wheel/Rim - Welded repair other than disc to rim attachment on steel wheel | 6 | 6 | 0.0% |
| 396.5A-HNLIW | Hubs - No visible or measurable lubricant showing in the hub - inner wheel | 6 | 10 | 0.0% |
| 397.3-SLL | State/Local Laws - Driving/parking a CMV containing hazardous materials in violation of local regulations/laws/ordinances in the jurisdiction being operated | 6 | 614 | 0.0% |
| 172.332C-HMM | HM (Markings) - Failing to display identification numbers on placard are required | 5 | 108 | 0.0% |
| 172.505A | Not placarded for subsidiary poison inhalation hazard | 5 | 6 | 0.0% |
| 172.514A-HMPS | HM (Placarding) - Failing to affix placards to a bulk package when required. | 5 | 64 | 0.0% |
| 173.24G4-HMBPVD | HM (Bulk Packages) - Missing or improperly secured venting devices. | 5 | 5 | 0.0% |
| 173.29A | Empty package improper transportation | 5 | 51 | 0.0% |
| 173.35F2 | IBC not secured to or within vehicle | 5 | 6 | 0.0% |
| 178.345-6-HMP | HM (Packaging) - DOT 406/407/412 supports and anchoring requirements. | 5 | 458 | 0.0% |
| 180.3 | Represent a package as meeting a specification that does not meet a specification | 5 | 9 | 0.0% |
| 365.511MX | MX Carrier - Mexican domiciled carrier operating a CMV in the U.S. with permanent operating authority without a current CVSA decal | 5 | 5 | 0.0% |
| 383.25A6 | Learner's Permit (CLP) - Operate a CMV transporting HM requiring placards on a learners permit | 5 | 5 | 0.0% |
| 385.13A1-OOSOPC | OOS Order - Motor carrier operating a CMV while an existing out-of-service order is in effect: UNSAT/UNFIT - Passenger Carriers | 5 | 5 | 0.0% |
| 392.14-D | Driver - Failing to use extreme caution in a CMV when hazardous conditions exist | 5 | 347 | 0.0% |
| 392.16 | Failing to use seat belt while operating a CMV | 5 | 40,796 | 0.0% |
| 392.2T | Improper turns | 5 | 1,527 | 0.0% |
| 392.82A1 | Using a hand-held mobile telephone while operating a CMV | 5 | 11,548 | 0.0% |
| 393.11A1-LRR | Lighting - Reflex reflector(s) missing or improper | 5 | 10,381 | 0.0% |
| 393.136F-CLB | Large Boulders - Improper securement of a non-cubic shaped boulder with an unstable base | 5 | 5 | 0.0% |
| 393.207G | No / defective air suspension exhaust control | 5 | 246 | 0.0% |
| 393.30-B | Battery - Not protected | 5 | 17,494 | 0.0% |
| 393.47B-BMBCAD | Air Disc Brake - Mismatched brake chamber sizes on the same axle other than a steering axle | 5 | 350 | 0.0% |
| 393.47D1-BPTAD-SA-1/8 | Air Disc Brake - Pad thickness (air disc brakes less than 1/8 inch) on a steering axle | 5 | 44 | 0.0% |
| 393.53BMAN | Air Brake - CMV manufactured on or after 10/20/1994 is not equipped with automatic air brake adjusters | 5 | 5,018 | 0.0% |
| 393.55D3 | No or Defective ABS Malfunction Indicator for towed vehicles on vehicles manufactured after February 2001 | 5 | 18,337 | 0.0% |
| 393.70B1I-RW | Fifth Wheel repair weld is cracked | 5 | 7 | 0.0% |
| 393.71H-CDDHSW | Coupling - Driveaway, pintle hook has more than 20% wear in the horn section | 5 | 6 | 0.0% |
| 393.71K-CDLSC | Coupling - Lower saddle-mount cracked | 5 | 5 | 0.0% |
| 393.95B | Emergency Equipment - A power unit requiring fuses - missing a spare fuse for a required part or accessory (e.g., lamps required by 393.11, ABS lights or low air | 5 | 19,741 | 0.0% |
| 393.9A-HLLH | Lighting - Headlamp(s) fail to operate on low and high beam | 5 | 39,989 | 0.0% |
| 393.9B-LRLO | Lighting - Tail lamp - Any obstructed. | 5 | 883 | 0.0% |
| 395.11G | Failing to provide supporting documents in the driver's possession upon request | 5 | 235 | 0.0% |
| 395.26B | Motor carrier failed to ensure that the ELD automatically recorded the required data elements. | 5 | 5,362 | 0.0% |
| 395.30B1-ELDDFR | HOS (ELD) - Driver failing to review records and certify the accuracy of the information. | 5 | 101,918 | 0.0% |
| 395.32B-ELDDFR | HOS (ELD) - Driver failed to review any unassigned driving time when prompted by the ELD | 5 | 17,112 | 0.0% |
| 395.3B2-HOSPRNP | Driving after 70 hours on duty in a 8 day period. (Property carrying vehicle) - Nominal Violation | 5 | 38 | 0.0% |
| 395.5B1-HOSPVIDIT | HOS (Passenger) - Driving after being on duty more than 60 hours in the previous 7 consecutive days at the time of inspection. Time | 5 | 6 | 0.0% |
| 396.3A1-CDTDSIS | Coupling - Semi-Trailer, drawbar slider ineffective stop | 5 | 6 | 0.0% |
| 396.3A1-SGB | Steering Gear Box - welded | 5 | 7 | 0.0% |
| 396.5A-L | Lubrication - Improper lubrication | 5 | 257 | 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 ↗