Direct answers on 393.22(b) enforcement, out-of-service risk, and next steps based on 31 million+ roadside inspections.
Ranks #1,825 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.0% is below the FMCSR-wide average of 33.3%.
Direct answers grounded in TruckCodex inspection data
No. Across our 13 million+ inspection records, 393.22(b) has a 0.0% out-of-service rate—meaning no citations for this code resulted in an OOS order. This is significantly lower than the 31.4% average OOS rate across all FMCSR codes. Your truck will not be placed out of service for this violation, though you will still need to correct the underlying issue.
393.22(b) is among the least cited vehicle maintenance violations in our database, ranked #1789 of 3,036 FMCSR codes by volume. We have recorded only 31 all-time citations. For context, similar codes like 393.9(a) (inoperable lamps) have 660,737 citations with a 15.4% OOS rate, and 396.3(a)(1) has 236,919 citations with a 45.3% OOS rate. This code is rarely enforced relative to peer violations.
First, obtain the full citation paperwork and photograph or document the defect noted by the inspector. Second, contact your fleet maintenance manager or mechanic with the specific equipment or component cited. Third, schedule repairs immediately—do not operate the vehicle in violation. Fourth, keep documentation of the repair work, parts replaced, and dates completed. Fifth, if you believe the citation is incorrect, understand that DataQs allows formal challenges to roadside inspection records, though the process typically requires detailed evidence of inspector error or false documentation.
Our inspection records show zero citations for 393.22(b) in the last 12 months and zero in the last 90 days, despite 31 all-time citations in our database. This indicates the code is effectively inactive in current roadside enforcement. However, do not assume it has been removed—enforcement patterns can shift. Focus compliance efforts on higher-volume violations like lighting and brake defects instead.
Among the 31 citations in our database, Kenworth trucks account for 6 citations, International for 5, and Freightliner for 5. Peterbilt, Utility, and Freightliner (FRHT variant) each have 3 citations. However, the total citation volume is so low that these counts reflect minimal data. Enforcement has been too sparse to identify a meaningful pattern by manufacturer.
ElitIst Inc (USDOT 3467706) and TSL Highway Inc (USDOT 3751251) each have 2 citations for 393.22(b) in our records. Eight other carriers—including Pomps Tire Service Inc, Dependable Hawaiian Express Inc, and STG Drayage LLC—have 1 citation each. The spread across small carrier counts reflects the overall rarity of this citation.
Yes. DataQs (the FMCSA's challenge system) allows drivers and carriers to contest roadside inspection records if you believe the inspection was conducted improperly or the finding was documented incorrectly. You have a limited window to file and must provide evidence (photos, maintenance records, witness statements, or expert reports). Documentation-based violations are often easier to challenge than equipment defects, but success depends on the specifics of your case.
FMCSA safety records track violations by both driver and carrier in the Compliance, Safety, Accountability (CSA) system. A 393.22(b) citation will appear on both your safety profile and your carrier's BASIC category record (Vehicle Maintenance). The violation affects your company's safety rating and may trigger audit risk. Inform your fleet safety manager immediately so the carrier can document corrective action and mitigate CSA impact.
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.