What 172.407D-HML means in plain language
172.407D-HML covers hazardous materials labeling requirements for specific package types and shipment conditions. The regulation ensures that packages containing hazardous materials are labeled in ways that comply with DOT standards—covering everything from label placement to the durability and visibility of markings under normal transport conditions.
When an inspector cites you for this code, they've found that labeling on a hazmat package didn't meet the required standard. This could mean a label was missing, placed incorrectly, wasn't durable enough for the transport environment, or failed to display required information clearly. Unlike violations that involve active loading/unloading or placard placement errors, this one focuses on the labeling of the hazmat cargo itself before or during transport.
What our enforcement data actually shows
Across our 13 million+ inspection records, 172.407D-HML ranks #1938 out of 3,036 FMCSR codes by citation volume. This is a relatively infrequent violation: we've recorded 20 all-time citations, with 15 in the last 12 months and just 1 in the last 90 days.
Most importantly: the OOS rate for this code is 0.0%. None of the 20 citations on record resulted in a vehicle being placed out of service. This stands in sharp contrast to the all-FMCSR average OOS rate of 31.4%. That means inspectors are citing this violation but not considering it severe enough to remove your vehicle from the road immediately.
That said, receiving a citation still creates a record that can be reviewed during future inspections and may factor into your carrier's safety profile.
Who gets cited most
Our inspection records show citations for this code are concentrated in a small number of states. In the last 180 days, New York recorded 1 citation with a 0.0% OOS rate.
At the carrier level, our data shows fleets such as Suntech Group Inc (USDOT 659646) and Headrick Signs & Graphics Inc (USDOT 1546191) with 2 citations each across our database. The low overall volume means no single fleet dominates this violation category. Vehicle makes most frequently cited include Ford (6 citations), followed by International and unpublished makes (3 each).
How severe is this compared to similar codes
Hazmat labeling violations sit on the milder end of the hazmat enforcement spectrum. Consider these peer codes in the hazardous materials category:
- 177.834A-HMC (General loading/unloading hazmat) has 3,954 citations with a 99.2% OOS rate—meaning nearly every citation results in immediate vehicle removal.
- 177.817(a) (Placarding violation) has 2,274 citations with a 75.1% OOS rate—significantly more severe.
- 172.516(c)(6) (Placard damaged, deteriorated, or obscured) has 1,796 citations but only a 1.6% OOS rate, similar in severity to your citation.
The data indicates that labeling defects on packages are treated less severely than active loading/unloading problems or placard failures. Inspectors appear to distinguish between labeling errors and operational hazmat handling violations.
How to avoid it
Our enforcement data reveals patterns that point to concrete prevention steps:
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Inspect labels before loading: The co-occurring violations in our database show this code frequently appears alongside 172.400A1-HML (Hazmat labeling on packages). Make a pre-trip habit of verifying that every hazmat package you're transporting has legible, properly positioned labels that match the contents.
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Check label durability for your vehicle type: Ford vehicles appear most frequently in the citation record for this code (6 citations). This may reflect exposure (higher volume of Ford units on the road) rather than a vehicle defect, but it signals that labeling integrity matters across all truck types. Before departure, confirm labels won't degrade during transport—exposure to weather, vibration, or abrasion can render labels illegible.
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Verify label placement and content: Labels must be on the proper surface of the package (typically the top two layers of outer packaging for hazmat shipments) and oriented for easy viewing. A quick visual scan during pre-trip can catch misplaced or obscured labels before you leave the dock.
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Work with shippers on compliance: If you regularly transport hazmat from certain shippers, flag any labeling issues you observe to the shipper's hazmat coordinator. Our data shows this violation is infrequent enough that shipper processes—not driver error alone—may be the root cause in some cases.
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Document and photograph: Keep records of hazmat package conditions at the point of pickup. If a citation arises and the label condition changed during transit, documentation helps your defense.