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 |
|---|---|---|---|---|
| 393.83D-ELNGPB | Exhaust System - Other than Gasoline - Exhaust system leaking or discharging under the chassis more than 15 inches (38.1 cm) forward of the rear-most part of the | 348 | 428 | 0.01% |
| 383.25A2 | Learner's Permit (CLP) - Operate a CMV without a valid state driver's license | 343 | 347 | 0.01% |
| 393.75A1-TRPES | Tires - Has damaged plies evident in the sidewall up to 2 square inches | 343 | 416 | 0.01% |
| 393.45D-B | Air Brake - Audible air leak at a proper connection | 339 | 121,495 | 0.01% |
| 393.78-WOOS | Wipers - Inoperative/missing/damaged on drivers side, during inclement weather requiring use of the windshield wipers | 332 | 1,167 | 0.01% |
| 173.24B1-HMNBP | HM (Non-Bulk Packaging) -HM/DG leaking in or from a package | 319 | 322 | 0.01% |
| 393.70C | Defective coupling devices for full trailer | 318 | 453 | 0.01% |
| 393.201A-VLRB | Van/OT Trailers - Lower rail broken with complete separation in bay area | 317 | 351 | 0.01% |
| 393.70D | No or improper safety chains or cables for full trailer | 316 | 432 | 0.01% |
| 393.83C-ELGPB | Exhaust System - Gasoline-Powered Buses - Any gasoline-powered bus exhaust system that is leaking or discharging under the chassis more than 6 inches (15.24 cm) f | 307 | 317 | 0.01% |
| 393.70B | Defective/improper fifth wheel assemblies | 306 | 1,286 | 0.01% |
| 396.5B | Oil and/or grease leak | 305 | 84,226 | 0.01% |
| 396.3A1-CDHSLMII | Semi-Trailer - Loose mounting, missing or ineffective fasteners, insecure latch, or not in use when required. | 301 | 328 | 0.01% |
| 392.5A2-DETECT | Driver having any measured alcohol concentration, or any detected presence of alcohol while on duty,or operating, or in physical control of a commercial motor veh | 300 | 301 | 0.01% |
| 395.8F01 | Drivers record of duty status not current | 297 | 18,430 | 0.01% |
| 393.209B-STWLOOS | Steering - Steering wheel lash (free play) meets or exceeds OOS chart limit | 295 | 296 | 0.01% |
| 393.47A-BCLMBD | Drum Brake - Cracked/loose/missing lining/pad | 293 | 8,977 | 0.01% |
| 393.47A-CR | Rotor (disc) cracked more than 75 percent of the friction surface completely through the rotor or completely through a solid rotor or completely through a structu | 293 | 298 | 0.01% |
| 172.200A | No shipping paper provided by offeror | 290 | 922 | 0.01% |
| 177.834J | Manholes and valves not closed or leak free | 289 | 318 | 0.01% |
| 396.3A1-SSF | Sliding subframe rail defective | 288 | 1,010 | 0.01% |
| 396.3A1-BMC | Hydraulic Master Cylinder Less Than 1/4 Full on Hydraulic Brakes | 284 | 287 | 0.01% |
| 393.209B | Excessive steering wheel lash | 283 | 663 | 0.01% |
| 393.48A-BLMACBD | Drum Brake - Loose chamber/spider/camshaft support bracket | 278 | 7,006 | 0.01% |
| 393.11A1-LTNRV | Lighting - Turn signal - Any missing not on the rearmost vehicle. | 275 | 2,907 | 0.01% |
| 393.47A-CD | Brake drum with external crack or crack that opens upon application | 267 | 334 | 0.01% |
| 392.2-SLL | State/Local Laws - | 266 | 124,960 | 0.01% |
| 393.102B | Insufficient means to prevent vertical movement | 263 | 309 | 0.01% |
| 393.126B | Damaged or Missing tiedown or securement device for intermodal containers transported on container chassis vehicle | 263 | 352 | 0.01% |
| 393.47D1-BRMMCAD-SA | Air Disc Brake - Rotor (disc) metal to metal contact on a steering axle | 263 | 270 | 0.01% |
| 393.78 | Wipers - Inoperative / missing / damaged wipers | 263 | 141,359 | 0.01% |
| 393.45DCUV | Brake Connections with Constrictions Under Vehicle | 262 | 2,899 | 0.01% |
| 395.3A3-PROPN | Driving beyond 11 hour driving limit in a 14 hour period. (Property carrying vehicle) - Nominal Violation | 259 | 3,185 | 0.01% |
| 393.42A-BM-SA | Brake - Missing on a steering axle | 258 | 261 | 0.01% |
| 393.132 | No/improper securement of crushed vehicles | 257 | 309 | 0.01% |
| 395.3B1-HOSPDIT | HOS (Property) - Driving after being on duty more than 60 hours in the previous 7 consecutive days at the time of inspection. Time | 254 | 326 | 0.01% |
| 393.207C-SDLS | Suspension - Displaced leaf spring that could result in contact with a vehicle component | 253 | 269 | 0.01% |
| 393.106C1 | No means to prevent cargo from rolling | 251 | 262 | 0.01% |
| 391.41A1-P | Operating a passenger-carrying vehicle without possessing a valid medical certificate | 250 | 411 | 0.01% |
| 393.11A1-LHLMWR | Lighting - Headlamps - Both missing when required to be on | 249 | 296 | 0.01% |
| 393.9A-LTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | 249 | 32,916 | 0.01% |
| 177.801-LEAK | Accepting/transporting HM not prepared in accordance with the regulations. Package has identifiable (without the use of instruments) release of HM to the environ | 248 | 250 | 0.01% |
| 392.15-NONCDL | Driver Prohibited from Performing Safety Sensitive Functions per 382.501(a) in the Drug and Alcohol Clearinghouse in a CMV that does not require a CDL | 248 | 258 | 0.01% |
| 393.205B-WR | Wheel/Rim - Elongated stud hole | 248 | 253 | 0.01% |
| 390.35B-MED | Operating a CMV while possessing a fraudulent medical certificate | 247 | 262 | 0.01% |
| 395.8E-HOSPVELDT | HOS (Passenger) - Tampering with an ELD so that the device does not accurately record and retain required data. Explain: | 246 | 272 | 0.01% |
| 393.48A-BIHE | Hydraulic/Electric Brake - Inoperative other than a steering axle. | 245 | 29,782 | 0.01% |
| 392.2RG | State vehicle registration or License Plate violation | 238 | 238,950 | 0.01% |
| 392.5A2-OPER | Intoxicating - No driver shall use alcohol, be under the influence of alcohol, or have any measured alcohol concentration or detected presence of alcohol, while o | 237 | 239 | 0.01% |
| 393.9A1-LPLOWR | Lighting - Projecting load - Any lamp on projecting load inoperative when required to be on | 237 | 246 | 0.01% |
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 ↗