What 392.22B means in plain language
FMCSR 392.22B addresses the placement and condition of warning devices that must be displayed on the road surface when your truck is stopped or disabled. When you're broken down on the shoulder, parked during an emergency, or stopped for any reason outside a normal truck stop, the rules require you to position reflective triangles, flares, or other approved warning devices at specific distances from your vehicle to alert oncoming traffic.
A citation under this code means an inspector determined that either you failed to place warning devices where required, or the devices you did place were not positioned correctly according to regulation. This could mean the triangles were too close to your truck, too far from it, placed on the wrong side of the road, or set up at incorrect intervals.
The intent is clear: drivers behind you need adequate distance and visibility to see your disabled or stopped truck and slow down safely. Poor placement defeats that purpose and creates a hazard.
What our enforcement data actually shows
Across our 13 million inspection records, 392.22B has generated 1,241 citations all-time, with 383 citations logged in the last 12 months and 62 in the last 90 days. This code ranks #664 out of 3,036 FMCSR codes by citation frequency, making it a mid-frequency violation.
Critically, our data shows zero drivers have been placed out of service for this violation—all 1,241 citations resulted in a non-OOS outcome. The out-of-service rate is 0.0%, compared to the all-FMCSR average of 31.4%. This tells you that while inspectors are citing this violation regularly, FMCSA considers it lower-severity than many other safety codes and does not use it as grounds for immediate truck removal from service.
The 12-month trend shows relative consistency, with a notable spike in July 2025 (54 citations) and seasonal dips in April and November. Most months cluster in the 24–37 citation range, suggesting this is an ongoing, fairly stable enforcement pattern rather than a crackdown.
Who gets cited most
Our inspection records show Texas leads by significant margin with 111 citations in the last 180 days, followed by Iowa with 32 citations and Illinois with 10 citations. All three states have a 0.0% out-of-service rate, consistent with the national pattern for this code.
When we look at carrier data all-time, fleets such as New Prime Inc (USDOT 3706) and Schneider National Carriers Inc (USDOT 264184) each have 5 citations for this violation, along with NFI Interactive Logistics LLC (USDOT 1486168). Swift Transportation Co of Arizona LLC (USDOT 54283) shows 4 citations. These numbers reflect exposure and fleet size; they do not indicate systemic negligence but rather that large carriers operating high volumes of trucks across many states will naturally see more citations across the board.
Vehicle-wise, our data shows Freightliner (FRHT) is the most-cited make at 195 citations, followed by Utility trailers (UTILITY) at 134 and Wabash National (WABASH NAT) at 102. This aligns with the fact that these are among the most common truck and trailer combinations on the road.
How severe is this compared to similar codes
392.22B sits within the Unsafe Driving category. When we compare it to peer codes in enforcement volume and risk profile, the differences are stark.
The broader 392.2 code (Operating a CMV while ill or fatigued) has accrued 1,208,164 citations all-time with a 0.8% out-of-service rate—roughly 1,000 times more frequent than 392.22B. Similarly, 392.2-SLLSR (also fatigue-related) shows 191,232 citations with a 0.1% OOS rate. Both are far more common and carry more enforcement attention.
392.22B's 0.0% OOS rate means inspectors are treating improper warning device placement as a citation-level issue without immediate severity, whereas codes like 392.2-SLLEQP (also in the Unsafe Driving category) show a 2.4% OOS rate, reflecting genuine danger perception.
How to avoid it
Our data reveals a clear pattern: 392.22B frequently co-occurs with other equipment defects. In the last 90 days, inspections with a 392.22B citation also commonly included 396.17C (no proof of periodic inspection, 23 shared inspections) and 393.95B (warning devices missing, 11 shared inspections). This tells us that drivers who fail at warning device placement often have broader pre-trip inspection gaps.
Here's what you can do:
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Know your kit before you need it. Before each shift, confirm your warning triangles or flares are present, reflectors are clean and bright, and all devices are intact. Our data shows warnings devices missing or defective co-occurs with placement violations.
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Memorize the placement distances. For a breakdown on a two-lane road with traffic in both directions, regulations specify exact intervals. If you don't know them cold, you will place them wrong under stress. Review them weekly.
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Set up triangles on the road surface, not on the shoulder. The code explicitly addresses road surface placement. Do not prop them on grass or gravel; position them squarely on the asphalt at the correct distance and angle so oncoming traffic sees them early.
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Use both sides of the road if required. Depending on the road type and traffic pattern, you may need to place devices behind and ahead of your truck, and possibly on both shoulders. Confirm the rule for the class of road you're on.
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Test your reflectors in low light. Many co-occurring violations involve poor lighting (393.9 inoperable lamps, 393.95A missing fire extinguishers). Broken reflectors on your warning devices are useless. Inspect them under actual low-visibility conditions.
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Document your setup. If you do break down, take a photo or two of your warning device placement before flagging down help. If cited, this record helps prove compliance intent and can support an appeal.
The good news: this violation is entirely preventable with a pre-trip inspection habit and five minutes of knowledge. The enforcement trend is steady but not rising, and the OOS rate is zero, meaning a citation won't pull you off the road immediately—but it will cost you.