What 172.404(a) means in plain language
FSMCR 172.404(a) addresses specific requirements for how hazardous materials must be described and documented during transport. The regulation sets the standard for the information that must accompany hazmat shipments—essentially, the accuracy and completeness of how you present what you're carrying to authorities, shipping partners, and emergency responders.
This code focuses on ensuring that the hazmat classification, proper shipping name, hazard class, and other technical identifiers are correctly recorded before your vehicle ever leaves the facility. It's about paperwork accuracy and completeness, not just placard visibility or physical condition of the load.
When an inspector cites 172.404(a), they've found that something critical about how your hazmat was identified, classified, or documented on the shipping papers doesn't match regulatory requirements. This might involve the shipping name, hazard class designation, or other technical data that must align with DOT's hazmat table.
What our enforcement data actually shows
Across our database of 13 million+ roadside inspection records, 172.404(a) has been cited only once in all-time history. In the last 12 months, we recorded zero citations. In the last 90 days, we also recorded zero citations.
When that one citation was issued, the driver or carrier was not placed out of service. This means the violation was handled as a warning or correctable issue rather than an immediate safety shutdown.
The 0.0% out-of-service rate for this code stands well below the all-FMCSR average of 31.4%, indicating inspectors treat this violation as less immediately dangerous than violations across other codes. Ranked #2796 out of 3,036 FMCSR codes by citation volume, 172.404(a) is exceptionally rare in the roadside enforcement landscape.
The scarcity of citations suggests either that most carriers and drivers comply consistently with hazmat documentation standards, or that inspectors prioritize more visible or immediately hazardous violations when they encounter documentation discrepancies.
Who gets cited most
Our inspection records show that TITAN TRANSFER INC (USDOT 845505) has one citation for 172.404(a) across all 13 million inspections. Because we have only one citation total for this code, we cannot meaningfully break down enforcement by state or compare violation patterns across multiple carriers.
The rarity of this citation means that if you receive one, you're in a statistically unusual position—and that's actually useful information. It suggests the violation you received involves a specific documentation or classification error rather than a systemic or widespread practice.
How severe is this compared to similar codes
Other hazmat documentation and placarding codes show much higher enforcement activity. For example, 177.834A (general loading/unloading of hazmat) has been cited 3,954 times with a 99.2% out-of-service rate. Similarly, 177.834(a) has 3,839 citations with a 97.9% OOS rate.
Placarding violations like 177.817(a) account for 2,274 citations with a 75.1% OOS rate. Even 172.502(a)(1), which addresses placarding general requirements, shows 1,820 citations with an 18.5% OOS rate.
Compared to these peers, 172.404(a) enforcement is dramatically lighter. The gap between the citation volumes and OOS rates suggests that while regulators aggressively enforce physical placarding and loading practices, they enforce documentation classification standards far less frequently at roadside.
How to avoid it
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Verify shipping papers before departure. Cross-check the hazmat classification, proper shipping name, hazard class, and packing group listed on your bill of lading against the DOT hazmat table. Don't assume the shipper got it right.
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Confirm the hazmat table match. If you carry hazmat regularly, familiarize yourself with the basic structure of DOT's hazmat table so you can spot obvious mismatches (wrong hazard class, missing subsidiary hazard, incorrect packing group).
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Reject load discrepancies. If the shipping papers don't match the product label or package marking, refuse to accept the load until the shipper corrects the documentation. This protects you and ensures compliance before you hit the road.
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Keep a reference copy. Carry a current copy of the DOT hazmat table or a hazmat transportation guide in your cab so you can reference it during pre-trip and if stopped by an inspector.
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Communicate with your dispatcher. If you notice documentation issues during pre-trip, report them immediately rather than assuming they're minor or will get sorted out later.