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 |
|---|---|---|---|---|
| 393.110C | Insufficient tiedowns for an article blocked with a headerboard, bulkhead, or other cargo | 1,045 | 1,079 | 0.04% |
| 396.3A1-DLDSUJM | Driveline/Driveshaft - Any independent vertical movement between opposing yoke ends greater than 1/8 inch, with hand pressure only. | 1,024 | 1,058 | 0.04% |
| 383.51A-NSIN | Driving a CMV while CDL is suspended for a non-safety-related reason and in the state of driver's license issuance | 1,012 | 2,699 | 0.04% |
| 393.45A-BLHF | Hydraulic Any Observed Leaking Hydraulic Fluid | 1,001 | 1,095 | 0.04% |
| 393.9B-LSLOWR | Lighting - Stop lamps - Both obscured when required to be on. | 992 | 1,016 | 0.04% |
| 396.7 | Unsafe operations forbidden | 984 | 2,023 | 0.04% |
| 393.128B1 | Vehicle not secured, front and rear | 960 | 968 | 0.04% |
| 396.3A1E-PNCNB | Brakes - Electric brakes on trailer inoperative due to electrical cable unplugged | 950 | 998 | 0.04% |
| 393.70B1I-CDFWFMI-MT20 | Coupling - More than 20% of the fifth wheel fasteners on either side missing/ineffective | 947 | 963 | 0.04% |
| 391.11B1 | Age - Operate a CMV while not at least 21 years of age in interstate commerce | 944 | 989 | 0.04% |
| 393.75B | Tire-front tread depth less than 4/32 of inch on a major tread groove | 926 | 7,484 | 0.04% |
| 393.75B-OOS | Tire-front tread depth less than 2/32 of inch on a major tread groove | 925 | 1,512 | 0.04% |
| 393.205A-WRCC | Wheel/Rim - Circumferential crack | 924 | 962 | 0.04% |
| 392.5A3 | Driver having possession of alcohol while on duty, or operating, or in physical control of a CMV | 910 | 919 | 0.04% |
| 391.41A-FPC | Operating a property-carrying vehicle without possessing a valid medical certificate. Previously Cited on [DATE] | 907 | 934 | 0.04% |
| 391.15A-NSIN | Driving a CMV while disqualified. Suspended for non-safety-related reason and in the state of driver's license issuance | 906 | 1,221 | 0.04% |
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | 900 | 132,877 | 0.04% |
| 393.209D-STBSM | Steering - Ball and socket joint has movement under load of the stud nut | 899 | 1,176 | 0.04% |
| 393.17B | No/defective towaway lamps on rear unit | 892 | 965 | 0.04% |
| 396.3A1-STLN | Steering - Loose nuts on tie rods/pitman arm/drag link/steering arm/tie rod | 884 | 927 | 0.04% |
| 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | 882 | 53,465 | 0.04% |
| 396.3A1DSCB | Center Bearing (Carrier Bearing) Cracked / Loose / Broken / Missing | 880 | 1,011 | 0.04% |
| 393.205A-WRDC | Wheel/Rim - Any disc wheel or rim crack/missing piece of more than 3 inches | 877 | 900 | 0.04% |
| 393.65C-FNS | Fuel - Tank not secured. | 875 | 920 | 0.04% |
| 393.75A1-TEPBM | Tires - All others - Exposed ply or belt material in tread or sidewall area | 874 | 25,697 | 0.04% |
| 395.3A3-HOSPRNC | Driving beyond 11 hour driving limit in a 14-hour period at time of inspection. (Property carrying vehicle) - Nominal Violation | 873 | 1,267 | 0.04% |
| 393.209D-STSM | Steering - Modified or has a condition that interferes with the free movement of steering | 861 | 871 | 0.04% |
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | 857 | 28,520 | 0.04% |
| 393.43D-BSB | Brake - More than 25% of the spring brakes are inoperative | 840 | 855 | 0.03% |
| 393.47B-BMBCAD-SA | Air Disc Brake - Mismatched brake chamber sizes on a steering axle | 837 | 841 | 0.03% |
| 393.62-BENM | Buses - Required emergency exit not properly marked. (does not convey message) | 797 | 876 | 0.03% |
| 395.3A2-HOSPRNC | Driving beyond 14 hour duty period at time of inspection. (Property carrying vehicle) - Nominal Violation | 794 | 1,022 | 0.03% |
| 390.3E-DAC | Driver prohibited from performing safety sensitive functions per 382.501(a) in the Drug and Alcohol Clearinghouse | 789 | 801 | 0.03% |
| 393.106C2-C | Cargo - Transverse tiedowns - cargo without direct contact to prevent shifting | 789 | 818 | 0.03% |
| 393.106B | Cargo not immobilized or secured | 787 | 1,028 | 0.03% |
| 393.47A-BSF | Brake - Malfunction causing smoke or fire to emit from the wheel end | 787 | 803 | 0.03% |
| 392.2DL | Miscellaneous Drivers License Violation | 766 | 8,209 | 0.03% |
| 396.3A1-AASGMD | More than 25% of the slider-guide/hold-down brackets are missing or disengaged. | 762 | 847 | 0.03% |
| 396.3A1-DLDSCBB | Driveline/Driveshaft - Any broken or loose center bearing bracket, bracket bolts or mounting hardware | 757 | 786 | 0.03% |
| 392.5A2-IP | 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 | 755 | 762 | 0.03% |
| 385.337B | Operating in violation of FMCSA Operational Out of Service order for Failure to permit a Safety Audit | 747 | 845 | 0.03% |
| 393.116B-CL | Logs - Improper/insufficient/or damaged components of a securement system | 747 | 760 | 0.03% |
| 393.75A3-TALS | Tires - All others - Leaking in sidewall area on tire equipped with ATIS | 745 | 778 | 0.03% |
| 393.45DLPC | Brake Connections with Leaks - Connection to Power Unit | 738 | 22,141 | 0.03% |
| 173.24B1-HMBPMC | HM (Bulk Packages) - HM/DG leaking from a bulk package (including associated piping) | 734 | 744 | 0.03% |
| 396.3A1-TRDL | Tie Rods / Drag Links - Defective Clamps / Holes / Missing nuts | 734 | 850 | 0.03% |
| 393.71H10-CDDSDNS | Coupling - Driveaway, safety devices not attached/not able to be secured | 729 | 736 | 0.03% |
| 173.24B1 | Release of Hazardous Materials from package | 724 | 741 | 0.03% |
| 177.823A | No placards/markings when required | 724 | 1,276 | 0.03% |
| 392.2-NCDLR | License - Restriction (non-CDL) - Operate a CMV in violation of restriction. | 708 | 712 | 0.03% |
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 ↗