FMCSA · 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.

Inspection coverage: Oct 6, 2023 – Oct 4, 2026Report refreshed: Oct 7, 2026Violation source updated: Oct 6, 2026

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.

All violation codes
Violation code	Description	OOS occurrences	All occurrences	Share of all OOS
178.338-13	MC338 Supports and anchoring	2	7	0.0%
178.340-6-HMP	HM (Packaging) - MC 306/307/312 supports and anchoring requirements.	2	61	0.0%
178.341-5A	MC306 internal valves	2	2	0.0%
178.345-10	DOT406/407/412 Pressure Relief	2	16	0.0%
178.345-11B1	DOT406/407/412 self closing system and remote means of closure	2	70	0.0%
180.405B	Cargo tank specifications	2	10	0.0%
383.23A2-S	Operating a CMV (School Bus) without a valid CDL: No school bus endorsement as described in 383.93(b)(5)	2	2	0.0%
383.23C	Operating on learner permit without CDL holder	2	2	0.0%
383.25A5II	Learner's Permit (CLP) - Failing to have a school bus endorsement	2	2	0.0%
385.13A1	Operating a commercial motor vehicle after the effective date of an Unsatisfactory rating - HM and Passenger carriers	2	2	0.0%
386.72B4-OOSOIEP	OOS Order - IEP offering a CMV while an existing out-of-service order is in effect: Imminent Hazard - Intermodal Equipment Provider	2	2	0.0%
387.31B3II	No insurance ID card (MCS-90B) - Mexican Passenger Carrier	2	22	0.0%
390.17	Carrier - Operating a CMV with additional equipment/accessories which decreases the safe operation of the CMV. Explain	2	3,805	0.0%
390.21TA	CMV not marked in accordance with regulations	2	10,708	0.0%
390.33-XS	Operating a Motor Coach or other Passenger Carrying vehicle with seating, secured or unsecured, in excess of the manufacturer's (manufacturer, remanufacturer, or	2	6	0.0%
392.16AD	Driver - Failed to use seat belt while operating a CMV.	2	12,839	0.0%
392.16B	Operating a property-carrying commercial motor vehicle while all other occupants are not properly restrained	2	2,119	0.0%
392.2-ML	Failure to Maintain Lane	2	4,935	0.0%
392.2-SLLEWPB	State/Local Laws - Excessive weight - Posted bridge	2	4,426	0.0%
392.2-SLLS3	State/Local Laws - Speeding 11-14 miles per hour over the speed limit	2	81,673	0.0%
392.2-SLLTCD	State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other	2	129,918	0.0%
392.2SLTRS	State/Local Laws - Truck routing restriction	2	2,128	0.0%
392.2Y	Failure to yield right of way	2	1,752	0.0%
392.62B-PC	Passenger Carrier - Operating a bus with aisle seats not conforming to the requirements	2	11	0.0%
392.7A	Driver failing to conduct pre-trip inspection	2	3,745	0.0%
392.9B2-DFICD	Driver - Failing to inspect the cargo and devices used to secure the cargo within the first 50 miles after beginning a trip	2	203	0.0%
392.9BA-INACT	OPERATING A COMMERCIAL MOTOR VEHICLE IN INTERSTATE COMMERCE WITHOUT AN ACTIVE USDOT NUMBER.	2	4	0.0%
393.116C-CLET	Logs - Logs not properly secured by the ExTe Com90 Load Securement System	2	2	0.0%
393.116D4	No center stakes and/or high log not secured on shortwood vehicles more than 10m (33ft) long	2	2	0.0%
393.11TL	Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997	2	44,761	0.0%
393.122H-CPR	Paper Rolls - Improper securement of stacked loads of paper rolls transported with the eyes lengthwise in a sided vehicle.	2	2	0.0%
393.124D	Improper arrangement of concrete pipe	2	2	0.0%
393.136B	Improper placement/positioning for boulder	2	2	0.0%
393.203D	Cab seats not securely mounted	2	119	0.0%
393.22B-LPL	Lighting - Prohibited combination of lamps	2	516	0.0%
393.24C	Improper Headlamp mounting	2	514	0.0%
393.25A-L	Lighting - Lamps (other than headlamps), not securely mounted	2	3,198	0.0%
393.43E-BBST	Brake - Bleedback system is defective on trailer	2	2,466	0.0%
393.45C-BSG	Air Brake - Missing or inadequate Nonmetallic tubing spring guard	2	3,311	0.0%
393.47A-LJN	Brakes - Loose/Missing Jam Nut	2	2,577	0.0%
393.48A-BCMHE	Hydraulic/Electric Brake - Hydraulic brake caliper movement exceeds 1/8 inch.	2	73	0.0%
393.48A-BSRFSHE	Hydraulic/Electric Brake - Severe rusting of brake rotor (disc)	2	107	0.0%
393.55C2	CMV other than truck-tractor manufactured on or after March 1, 1998 not equipped with an antilock brake system	2	15,870	0.0%
393.67C8	Improper fuel tank safety vent	2	113	0.0%
393.70B1I-CDFWC-LT20	Coupling - Less than 20% of the fifth wheel mounting angle iron cracked/broken	2	132	0.0%
393.70C-CDTDW	Coupling - Full Trailer, drawbar has welded repair	2	3	0.0%
393.70D-CDTISD	Coupling - Full Trailer, improper safety device	2	61	0.0%
393.71D-CDBTB	Coupling - Bumper tow-bar used for towed vehicle weighing more than 5,000 lbs	2	5	0.0%
393.71G-CDIMT	Coupling - Improper means of towing	2	61	0.0%
393.71H-CDDC	Coupling - Driveaway, drawbar eye cracked	2	2	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 ↗