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 |
|---|---|---|---|---|
| 392.5A3-IDUI | Intoxicating - No driver shall be on duty or operate a commercial motor vehicle while the driver possesses an intoxicating beverage, regardless of its alcohol con | 1,640 | 1,686 | 0.07% |
| 393.9A-LRLIWR | Lighting - Tail lamp - Both lamps on rearmost vehicle inoperative when required to be on | 1,548 | 1,641 | 0.06% |
| 395.3B2-HOSPDIT | HOS (Property) - Driving after being on duty more than 70 hours in the previous 8 consecutive days at the time of inspection. Time | 1,521 | 1,948 | 0.06% |
| 383.95-LCDL | Restriction - (CDL) - Operate a CMV in violation of a restriction. | 1,518 | 1,532 | 0.06% |
| 393.104B | Damaged securement system/tiedowns | 1,475 | 6,707 | 0.06% |
| 393.47A-BRC | Brake - Rotor (disc) with a crack in length of more than 75% of the friction surface or thru the rotor | 1,470 | 1,484 | 0.06% |
| 392.3-F | Fatigue - Operating a commercial motor vehicle while impaired, through fatigue. | 1,466 | 1,481 | 0.06% |
| 177.823A-HMPMCNP50% | HM (Placarding) - 50% or more of the required placards for a category of material (hazard class or division) are missing. CVSA Inspection Bulletin 2017-03 - Displ | 1,456 | 1,465 | 0.06% |
| 393.47D | All Brakes - Insufficient brake lining thickness | 1,449 | 4,362 | 0.06% |
| 393.75A4 | Tire-cut exposing ply and/or belt material | 1,435 | 5,284 | 0.06% |
| 393.9B-LTSO | Lighting - Turn signal - Any obscured on the rearmost vehicle. | 1,431 | 1,506 | 0.06% |
| 396.5B-HWSLOW | Hubs - Wheel seal leaking - outer wheel | 1,429 | 4,975 | 0.06% |
| 393.75A1-TBSP | Tires - All others - Has damaged plies evident in the sidewall up to 2 square inches | 1,424 | 1,682 | 0.06% |
| 396.3A1-CH | Brake - Hole in Spring Brake Housing | 1,415 | 1,521 | 0.06% |
| 396.3A1-LC | Brake - Leak from air chamber | 1,401 | 7,676 | 0.06% |
| 393.126 | Failure to ensure intermodal container securement | 1,392 | 1,527 | 0.06% |
| 393.75A3-ATIS | Tires - All others, leaking in tread area with inflation more than 50% of the maximum inflation pressure on tire equipped with ATIS | 1,391 | 6,071 | 0.06% |
| 391.11B1-A | Age - Operate a CMV while not at least 21 years of age in interstate commerce | 1,385 | 1,419 | 0.06% |
| 393.106D | Insufficient aggregate working load limit | 1,368 | 1,394 | 0.06% |
| 393.70B1I | Defective latching fasteners - Fasteners on either side of the vehicle are missing or ineffective | 1,343 | 2,355 | 0.06% |
| 393.70B1I-CDSLI-MT25 | Coupling - Slider latching fasteners - More than 25% ineffective on either side. | 1,342 | 1,346 | 0.06% |
| 392.9AA2 | Operating beyond the Scope of Operating Authority Granted | 1,324 | 1,524 | 0.05% |
| 393.45A-BHTBS | Air Brake - Hose/tubing with a bulge/swelling when air pressure is applied | 1,310 | 1,369 | 0.05% |
| 393.205A-WRTC | Wheel/Rim - Two or more cracks anywhere. | 1,291 | 1,304 | 0.05% |
| 383.25A1 | Learner's Permit (CLP) - Is not accompanied by the holder of a valid CDL that is fully authorized to operate the CMV. | 1,286 | 1,296 | 0.05% |
| 391.41A-F | Operating a property-carrying vehicle without possessing a valid medical certificate. | 1,259 | 4,183 | 0.05% |
| 392.2AU | State Operating Authority violation | 1,251 | 15,897 | 0.05% |
| 393.87A | Warning flag required on projecting load | 1,240 | 2,418 | 0.05% |
| 393.17A1-LSLDMWR | Lighting - Stop lamps - Driveaway - both missing. | 1,225 | 1,247 | 0.05% |
| 393.134B3 | Rear of container not properly secured | 1,223 | 1,241 | 0.05% |
| 393.47A-BCFSAD-SA | Air Disc Brake - Contaminated friction surface on a steering axle | 1,218 | 1,249 | 0.05% |
| 396.3A1DSYE | Drive Shaft Yoke Ends Cracked / Loose / Broken / Missing | 1,202 | 1,289 | 0.05% |
| 393.70D-CDTSDD | Coupling - Trailer, safety devices wire/chain damaged. | 1,195 | 1,259 | 0.05% |
| 393.116 | No/improper securement of logs | 1,172 | 1,203 | 0.05% |
| 393.25F | Stop lamp violations | 1,166 | 4,234 | 0.05% |
| 393.104F3 | Loose or unfastened tiedown | 1,155 | 5,891 | 0.05% |
| 393.207A-SAPPCBLM | Suspension - Axle positioning part cracked/broken/loose/missing. | 1,141 | 12,753 | 0.05% |
| 393.45D-BHTC | Air Brake - Damaged by heat, broken, or crimped in such a manner as to restrict air flow | 1,134 | 1,202 | 0.05% |
| 396.3A1-DLDSCBBP | Driveline/Driveshaft - More than 1/2 inch (12.7mm) vertical movement (with hand pressure only) of the shaft in the center bearing carrier. | 1,131 | 1,217 | 0.05% |
| 393.207F-SASMD | Suspension - Air spring/bag is missing or is detached at the top or bottom. | 1,127 | 1,549 | 0.05% |
| 395.8A | HOS (Form) - Paper Log/Logging Programs Form and Manner | 1,102 | 69,731 | 0.05% |
| 383.91A | Operating a cmv with improper CDL group | 1,101 | 1,134 | 0.05% |
| 392.2-SLLED | State/Local Laws - Excessive dimension (width/height/length) | 1,096 | 55,391 | 0.05% |
| 393.100C | Failure to prevent cargo shifting | 1,085 | 1,239 | 0.05% |
| 393.11A1-LRLMWR | Lighting - Tail lamp - Both lamps on rearmost vehicle missing when required to be on. | 1,084 | 1,188 | 0.04% |
| 396.5A-HNLOW | Hubs - No visible or measurable lubricant showing in the hub - outer wheel | 1,076 | 1,277 | 0.04% |
| 393.71H10-CDDSDM | Coupling - Driveaway, safety devices missing | 1,063 | 1,068 | 0.04% |
| 393.132C-CHVE | Flattened/Crushed Vehicles - Improper securement of flattened or crushed vehicles. | 1,062 | 1,064 | 0.04% |
| 393.83G | Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment | 1,061 | 51,680 | 0.04% |
| 396.3A1DLDSYEL | Driveline/Driveshaft - Any yoke-mounting hardware loose (with hand pressure), broken or missing | 1,046 | 1,059 | 0.04% |
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 ↗