Direct answers about 393.93A citations, OOS risk, compliance steps, and what the data shows from 13M+ roadside inspections.
Ranks #2,664 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.0% is below the FMCSR-wide average of 33.3%.
Failure to equip bus with seat belts
Direct answers grounded in TruckCodex inspection data
No. Across our inspection records, this violation has never resulted in an out-of-service order. Of the 2 all-time citations for 393.93A in our database, 100% were not placed out of service (0.0% OOS rate). For context, the national average OOS rate across all FMCSR codes is 31.4%, so this code sits well below that threshold for enforcement severity.
Very rare. Our inspection records show only 2 citations for this code in the entire 13-million-inspection database, with zero citations issued in the last 12 months and zero in the last 90 days. This ranks 393.93A at #2651 of 3,036 FMCSR codes by citation volume—among the least-cited vehicle maintenance violations on the road.
393.93A sits at the low end of enforcement severity. The peer code 393.9(a) (inoperable required lamps) has 660,737 citations and a 15.4% OOS rate. 396.3(a)(1) (general inspection/repair/maintenance) has 236,919 citations and 45.3% OOS rate. By contrast, 393.93A's 0.0% OOS rate and near-zero citation volume suggest regulators rarely encounter or cite this specific defect compared to lighting and general maintenance violations.
Low severity for enforcement. Because 393.93A is not OOS-eligible and cited extremely rarely, it does not trigger the higher-consequence pathways that lead to carrier enforcement action or fleet audits. Your focus should be on correcting the defect and ensuring proper documentation. One citation in isolation is unlikely to elevate your or your carrier's CSA percentile.
Yes. If you believe the citation was issued in error or does not reflect the actual condition of your vehicle, you can file a DataQs (FMCSA's Crash and Roadside Inspection Database Quality System) dispute. You'll need to submit evidence—photos, service records, or inspection reports—showing that seat belt equipment was properly installed and functional. Focus on documentation-backed rebuttal rather than subjective claims.
Our inspection records show only 2 all-time citations for this code. One carrier (Transborder de Nogales SA de CV, USDOT 1852066) and one carrier (Hucks Trucking LLC, USDOT 4171513) each received 1 citation. Because the sample size is so small, no meaningful geographic or carrier-specific trend exists. This violation is genuinely uncommon in roadside enforcement data.
Moderate priority. While this code is not OOS-eligible, you should schedule repair promptly to prevent repeat citations. The zero citations in the last 90 days suggests inspectors may be enforcing this sporadically. Ensure all required seat belt hardware, anchors, and webbing meet FMVSS standards and are documented in your vehicle maintenance records before your next inspection.
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.