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 |
|---|---|---|---|---|
| 383.93B1 | No double or triple trailer endorsement on CDL | 10 | 10 | 0.0% |
| 392.2SAFCH | State / Local Laws - Missing, Damaged, or Ineffective safety chains when required | 10 | 205 | 0.0% |
| 392.2-SLLIFTA | State/Local Laws - State tax/International Fuel Tax (IFTA) violation | 10 | 83,052 | 0.0% |
| 392.3-FPASS | Fatigue - Operate a passenger-carrying CMV while impaired by fatigue | 10 | 10 | 0.0% |
| 392.9B3-DFRCLS | Driver - Failing to reexamine the CMV's cargo and its load securement devices during the course of transportation and make any necessary adjustments. | 10 | 503 | 0.0% |
| 393.102C1-C | Cargo - Immobilized, such so that it cannot shift or tip to the extent that the vehicle's stability or maneuverability is adversely affected | 10 | 200 | 0.0% |
| 393.106A | No/improper front end structure/headerboard | 10 | 26 | 0.0% |
| 393.118B | Improper placement of bundles | 10 | 12 | 0.0% |
| 393.124E | Improper securement of concrete pipe with an inside diameter up to 45 inches (1143 mm) | 10 | 10 | 0.0% |
| 393.126D4 | Empty intermodal container not properly secured to prevent shifting when transported on vehicle other than container chassis vehicle | 10 | 10 | 0.0% |
| 393.136D | Improper secure; cubic boulder | 10 | 10 | 0.0% |
| 393.25A | Improper Lamp Mounting | 10 | 865 | 0.0% |
| 393.47G | Insufficient Brake Drum or Rotor thickness | 10 | 38 | 0.0% |
| 393.70C-CDTMC-MT20 | Coupling - 20% or more of the original welds (or repaired original welds) or parent metal cracked | 10 | 10 | 0.0% |
| 393.71H-CDDDMF | Coupling - Driveaway, drawbar missing fasteners | 10 | 10 | 0.0% |
| 393.93A-SBA | Seatbelts - Drivers seatbelt or passenger seatbelt (if equipped) - missing or defective | 10 | 1,819 | 0.0% |
| 393.93B-TS | Temporary Seating - Any vehicle that has a temporary seating for the driver | 10 | 15 | 0.0% |
| 395.13D2-OOSO | OOS Order (HOS) - Operating a CMV after being placed out-of-service and before preparing a record of duty status | 10 | 100 | 0.0% |
| 395.24C2II | Driver failed to manually add the trailer number | 10 | 8,111 | 0.0% |
| 396.3A1-BAR | Air Brake - Leaking air tank | 10 | 207 | 0.0% |
| 396.3A1-CDFWRW | Coupling - Fifth wheel plate repair weld is cracked. | 10 | 13 | 0.0% |
| 396.3A1-CRAMRH72B | Cargo (RAM) - RH-72B Cask Accessories - Hydraulic arm not securely attached (if equipped) | 10 | 66 | 0.0% |
| 396.3A1-DLDSCC | Driveline/Driveshaft - Any center bearing bracket crack equaling 50% or more of the original bracket width | 10 | 11 | 0.0% |
| 396.3A1-FWPC | Crack in the fifth wheel plate (parent metal) extending more than 20 percent of the distance across the metal in the direction of the crack | 10 | 11 | 0.0% |
| 396.3A1-STTSNL | Steering - Telescopic steering does not lock | 10 | 11 | 0.0% |
| 171.2B | Failed to comply with exemption | 9 | 151 | 0.0% |
| 172.301A3-HMM | HM (Markings) - Failing to display ID number on transport vehicle with large quantity of single HM as required. | 9 | 74 | 0.0% |
| 391.11B2S | Driver must be able to understand highway traffic signs and signals in the English language | 9 | 248 | 0.0% |
| 392.62C2 | Bus - Exit(s) obstructed by baggage/freight | 9 | 15 | 0.0% |
| 392.9AA2/H | Household Goods carrier operating beyond the Scope of Operating Authority (49 USC 14901(d)(3)) | 9 | 11 | 0.0% |
| 393.124C | Improper blocking of concrete pipe | 9 | 9 | 0.0% |
| 393.209E-STPAL | Steering - Auxiliary power-assist cylinder separated at either end from the attachment point(s) allowing movement of more than 1 inch (25.4 mm) in any direction. | 9 | 10 | 0.0% |
| 393.60E-WS | Windshield - Obstructed | 9 | 5,919 | 0.0% |
| 393.95A | No/discharged/unsecured fire extinguisher | 9 | 114,663 | 0.0% |
| 395.22H3 | Driver failed to maintain instruction sheet for ELD malfunction reporting requirements | 9 | 4,198 | 0.0% |
| 395.28 | Driver failed to select/deselect or annotate a special driving category or exempt status | 9 | 91 | 0.0% |
| 395.8A1 | Not using the appropriate method to record hours of service | 9 | 26 | 0.0% |
| 396.3A1-CDTDC | Coupling - Semi-Trailer, drawbar cracked | 9 | 10 | 0.0% |
| 396.3A1-EC | Bus - Electrical Mountings broken or unsecured | 9 | 11 | 0.0% |
| 172.332A-HMM | HM (Markings) - Failing to display ID number(s) as required | 8 | 86 | 0.0% |
| 172.336B | ID Numbers not properly displayed other than on placards | 8 | 31 | 0.0% |
| 177.823A-HMPIHMBPM | HM (Poison Inhalation Hazard (PIH) Markings) - Required markings are missing on a bulk package | 8 | 8 | 0.0% |
| 385.13D | Failing to comply with an Unsatisfactory Out of Service Order | 8 | 12 | 0.0% |
| 390.19A2 | HMSP Motor Carrier failed to file required biennial update of MCS-150B as required | 8 | 6,207 | 0.0% |
| 391.11A-QMC | Qualifications - Having operated or authorized a person to operate a CMV without being qualified | 8 | 1,392 | 0.0% |
| 391.15A | Driving a CMV while disqualified | 8 | 9 | 0.0% |
| 391.43H | Improper medical examiner's certificate form | 8 | 107 | 0.0% |
| 393.120E | No protection against shifting or tipping of metal coils transported in sided vehicle or intermodal container without anchor points | 8 | 8 | 0.0% |
| 393.17B2-LRLDM | Lighting - Tail lamp - Driveaway - missing | 8 | 513 | 0.0% |
| 393.30 | Improper battery installation | 8 | 9,201 | 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 ↗