FMCSR 392.22B: Warning Devices Citation — Q&A

No. Across our 13 million inspection records, 392.22B has never resulted in an out-of-service order. Our data shows a 0.0% OOS rate for this violation across all 1,241 all-time citations. This is significantly lower than the 31.4% national average OOS rate across all FMCSR codes, meaning inspectors cite this as a recordable violation but not as an immediate safety threat that requires you off the road.

392.22B is among the less severe violations in its category. Across our inspection database, it ranks #664 of 3,036 FMCSR codes by citation volume. Similar violations like 392.2 (operating while ill or fatigued) generate over 1.2 million citations and carry a 0.8% OOS rate. The fact that 392.22B has never triggered an out-of-service order suggests inspectors treat it as a compliance issue rather than an immediate operational hazard.

First, verify your warning device placement before your next trip—that's the direct fix. Second, get a pre-trip inspection completed: our data shows 392.22B is often cited alongside 396.17C (no proof of periodic inspection) in 23 shared inspections over the last 90 days, suggesting the violation may be caught during formal inspections. Third, photograph your warning device setup and keep records of placement checks. Fourth, request the inspection report from the roadside officer and review any photos or notes about device location or visibility.

Yes. In the last 180 days, our inspection records show Texas leads with 111 citations, followed by Iowa with 32, and Illinois with 10. Texas accounts for roughly two-thirds of recent 392.22B citations in our database. If you operate in Texas, this violation is more likely to be enforced during roadside safety inspections, so extra attention to warning device placement is especially important in that state.

Our data on co-occurring violations in the last 90 days shows 392.22B is most frequently cited alongside 396.17C (no proof of periodic inspection) in 23 shared inspections. It also commonly appears with 392.2RG (operating while ill or fatigued, 22 co-occurrences), inoperable lights (393.9, 17 co-occurrences), and windshield defects (393.78, 17 co-occurrences). This pattern suggests that warning device violations often surface during broader pre-trip or brake safety inspections.

Enforcement has been steady and modest. In the last 12 months, we recorded 383 citations for 392.22B across our 13 million inspection records. The last 90 days show 62 citations. July 2025 was the peak month with 54 citations, but most months fall in the 24–43 range. This suggests consistent low-level enforcement rather than a sudden crackdown, so the violation remains a regular roadside finding but not a widespread compliance crisis.

Yes, you can use the DataQs system to contest a citation on your record. The FMCSA allows drivers and carriers to challenge roadside inspection findings through the Identification of Incorrect Data (DataQs) process. For a violation like 392.22B, which is equipment-placement-based rather than a measurement or test result, your dispute should focus on photographic evidence, dash-camera footage, or witness statements showing proper device placement at the time of inspection. Success depends on documentary proof that contradicts the inspector's finding.

A 392.22B citation is recorded against both the carrier and the driver under FMCSA CSA scoring rules. The violation appears in your Unsafe Driving BASIC and affects your personal safety record if you're the cited driver. It also impacts your carrier's safety profile. If you change carriers, your citation history travels with you and influences future safety compliance reviews and insurance rates, so addressing the root cause—proper pre-trip warning device checks—benefits your long-term record.