What 392.22A-D means in plain language
When your commercial motor vehicle is stopped on or near a roadway, federal rules require you to both carry and actually deploy specific warning devices — typically reflective triangles — to alert other traffic. It is not enough to have the equipment stowed somewhere in the cab. If an inspector finds your truck stopped without those devices placed in the required positions around the vehicle, you are looking at a violation of 392.22A-D.
The regulation covers a range of scenarios: a breakdown, a tire change, a brief mechanical stop, or any other situation where your CMV sits in or adjacent to a lane of traffic. The type of warning device required and exactly where it must be placed depends on the road environment — a divided highway calls for a different setup than a two-lane rural road — but the core obligation is the same in every case: the devices must be out and visible.
This is fundamentally a driver behavior violation, not a defective equipment violation. The truck usually works fine. The problem is that the triangles stayed in their case.
What our enforcement data actually shows
Across our database of 13 million+ inspections, 392.22A-D has generated 8,324 all-time citations — and not a single one resulted in an out-of-service order. The OOS rate sits at 0.0%, which stands in sharp contrast to the all-FMCSR average OOS rate of 31.4%. You will not be parked by this violation alone, but that does not mean it disappears.
Enforcement is accelerating. Our inspection records show 6,581 citations in the last 12 months and 1,063 citations in just the last 90 days, signaling that inspectors are actively writing this code. The monthly trend data tells a clear story: citations climbed from 116 in April 2025 to a peak of 758 in August 2025, and volumes have remained elevated through early 2026. This is not a rarely-enforced obscurity — at #252 out of 3,036 FMCSR codes by citation volume, it sits squarely in the upper tier of enforcement activity.
The CSA severity weight is 4. That score attaches to your safety measurement system record and compounds if you accumulate additional violations in the Unsafe Driving or Vehicle Maintenance BASICs.
Who gets cited most
Looking at the last 180 days in our database, Louisiana dominates the citation landscape by an enormous margin — 2,687 citations with a 0.0% OOS rate. That number alone accounts for the majority of recent enforcement and suggests concentrated inspection activity or enforcement campaigns in that state. Virginia is a distant second at 56 citations, followed by Pennsylvania at 50 citations. Both also show a 0.0% OOS rate, consistent with the national picture for this code.
The variation in raw volume across states is material and worth understanding if you regularly run through Louisiana. If your routes take you through that state, the data in our database indicates the probability of an inspector checking your warning device deployment is significantly higher than in most other states.
On the carrier side, our data shows fleets such as NEW PRIME INC (USDOT 3706) with 57 all-time citations and SWIFT TRANSPORTATION CO OF ARIZONA LLC (USDOT 54283) with 34 citations appearing at the top of the list. These are high-volume carriers with large driver populations, and the citation counts reflect that scale — not any particular pattern of negligence.
Freightliner-badged equipment shows up in 3,553 of all-time citations under this code, more than any other make. Volvo (1,164 citations), Wabash National (1,162 citations), and Great Dane (962 citations) also appear frequently, spanning both power units and trailers. The distribution suggests this is a universal issue across equipment types, not specific to one platform.
How severe is this compared to similar codes
Within the Vehicle Maintenance category, 392.22A-D is a relatively low-stakes violation on the OOS dimension but a real one on the CSA scoreboard. Consider the context:
- 393.9(a) — Inoperable required lamps has generated 660,737 citations in our database and carries a 15.4% OOS rate. That code is nearly 80 times more common and far more likely to park you.
- 396.3(a)(1) — Inspection, repair, and maintenance (general) shows 236,919 citations and a 45.3% OOS rate — one of the highest in the category. A violation there is very likely to result in an immediate out-of-service order.
- 396.17C-PI — No proof of periodic inspection carries 212,081 citations and, like 392.22A-D, has a 0.0% OOS rate. Both codes hit your CSA record without parking the truck.
The pattern is clear: 392.22A-D will not shut you down at the roadside, but it is not harmless. The severity weight of 4 adds up across a fleet or across multiple inspections on a single driver's record.
How to avoid it
The co-occurring violation data from our inspection records is instructive. In the last 90 days, 392.22B-DFPWD — the specific sub-code for failing to physically place warning devices on the road surface — appeared in 927 of the same inspections as 392.22A-D. That pairing tells you inspectors are citing both the equipment requirement and the placement requirement together. Having the triangles on the truck is step one; getting them out of the case and onto the pavement is step two.
Beyond the core warning device issue, 167 inspections in the last 90 days also included an operating-while-fatigued citation (392.2-SLLUP), and 32 included a hours-of-service record violation (395.8A1-HOSP). That pattern suggests some of these stops involve drivers who are already in a compromised or non-compliant situation when they pull over. Staying current on your logs and managing fatigue reduces the likelihood that a routine stop turns into a multi-violation inspection.
Actionable steps before and during every trip:
- Verify your warning device kit during pre-trip. Open the case, confirm three reflective triangles are present and undamaged. A missing or cracked triangle is still a violation waiting to happen.
- Practice the placement sequence now, not at the roadside. Know the required placement distances for highway versus non-highway stops before you ever need them under stress or in bad weather.
- Deploy immediately upon stopping. The moment the truck comes to rest in or near a lane, the clock is running. Get the triangles out before you pop the hood or reach for the phone.
- Check your ELD and log compliance before you stop. The co-occurrence data shows HOS violations appearing alongside this code. An inspector who finds undeployed triangles will look at everything else.
- Confirm trailer marker and reflector condition on pre-trip. Freightliner, Wabash National, and Great Dane equipment appear heavily in our citation data. Inspectors covering this code are already looking at the rear of your unit — make sure reflectors and conspicuity tape are clean and intact so they have nothing else to write.