What 172.202A1 means in plain language
When you're transporting hazardous materials, federal law requires that your shipping papers contain a complete and accurate description of what you're carrying. This description must include the proper shipping name of the material, the hazard class it belongs to, the UN or NA identification number, and the packing group if one applies.
A 172.202A1 citation means that when inspectors reviewed your shipping papers, they found one or more of these key pieces of information was missing or incomplete. This isn't a placard or labeling issue—it's about the paperwork itself. The shipping paper is your legal documentation that proves you, your carrier, and the shipper understand exactly what hazardous cargo is on your truck and how dangerous it is.
Incomplete shipping paper descriptions create a chain-of-custody problem. If an accident happens, emergency responders won't have the full picture of what they're dealing with. If your load is inspected at a different checkpoint, the next inspector can't verify the cargo against your documentation.
What our enforcement data actually shows
Across our database of 13 million+ roadside inspections, 172.202A1 has received 136 all-time citations, with 41 citations in the last 12 months and 6 in the last 90 days. This places the code at #1341 of 3,036 FMCSR codes by citation volume—a relatively uncommon violation overall.
The critical enforcement detail: our inspection records show that only 8 out of 136 cited vehicles (5.9% out-of-service rate) were placed out of service. This is substantially lower than the all-FMCSR average of 31.4%. In other words, inspectors treated most of these citations as correctable paperwork errors rather than imminent safety threats. However, the violation is still citeable and carries a CSA severity weight of 5, meaning it will affect your carrier's safety profile and your own compliance history.
Monthly trend data from our records indicates steady citation activity: December 2025 saw the highest volume with 7 citations; the most recent months (February and March 2026) averaged 2–3 citations per month. October 2025 was the only month in the last 12 with an out-of-service placement.
Who gets cited most
Our inspection records show that incomplete hazmat shipping paper descriptions are concentrated in specific jurisdictions. Over the last 180 days, Texas leads with 14 citations, followed by New Mexico with 4 and Illinois with 3. North Carolina had 1 citation.
The out-of-service rate varies significantly across these states. Texas showed a 7.1% OOS rate (1 out of 14 citations), while New Mexico and Illinois both had 0% OOS rates—meaning inspectors did not remove any vehicles from service. This suggests that in Texas, inspectors encountered one case serious enough to warrant immediate action, whereas in the other top states, citations were resolved through paperwork correction.
By carrier, our data shows that operations such as Quality Tank SA de CV (USDOT 2864600) have accumulated 11 citations all-time, and GSF Division Transporte S de RL de CV (USDOT 3911921) has 7 citations. These numbers reflect repeat exposure to the violation rather than an indication of negligent operations—it may reflect the higher volume of hazmat loads these carriers move, or gaps in their shipping paper preparation processes that training could address.
How severe is this compared to similar codes
Within the hazardous materials category, 172.202A1 occupies a middle enforcement tier. Compare it to peer codes in the same regulatory family:
Loading and unloading violations (such as 177.834A-HMC and 177.834(a)) are dramatically more severe: they carry 3,954 and 3,839 citations respectively, with OOS rates of 99.2% and 97.9%. These are imminent hazard violations.
Placarding violations vary widely. General placarding requirement violations (172.502(a)(1)) have 1,820 citations with an 18.5% OOS rate—three times the OOS rate of 172.202A1. Deteriorated placard violations (172.516(c)(6)) have an even lower OOS rate of 1.6%.
Emergency response information violations (172.602(c)(1)) have 1,464 citations but a 0.0% OOS rate—suggesting inspectors treat those as correctable paperwork deficiencies similar to 172.202A1.
In summary, incomplete shipping paper descriptions rank below active hazmat handling violations and general placarding failures in enforcement severity, placing them in the correctable-violation category.
How to avoid it
The co-occurring violations in our last 90 days of data show a pattern. Two inspections also cited 172.604 (missing or improper Emergency Response telephone number), and one citation co-occurred with 172.502A1 (placarding general requirements). This tells us that incomplete shipping paper descriptions often accompany other documentation gaps.
Here are concrete steps to prevent 172.202A1:
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Before accepting a load: Read the shipper's hazardous materials declaration or shipping paper line-by-line. Verify that the proper shipping name, hazard class, UN/NA ID number, and packing group are all present and legible. If any field is blank or unclear, contact the shipper and do not move the load.
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Maintain a checklist for every hazmat load: Create or use your carrier's pre-trip shipping paper verification form. Print or display it in your cab. Check off: proper shipping name, hazard class, ID number, packing group, total quantity, and Emergency Response phone number. This takes 60 seconds and catches most errors.
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Photograph or scan shipping papers: At pickup, take a photo of the completed shipping paper and send it to dispatch or your safety department. This creates a digital record and gives your carrier a chance to flag incomplete paperwork before you leave the facility.
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Ask the shipper, not the dispatcher: If a shipping paper looks incomplete, phone the shipper directly. They have the authoritative hazardous materials classification. Do not rely on the dispatcher to "correct it later."
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Recognize vehicle and carrier patterns: Our data shows Kenworth (KW) and Freightliner (FRHT) models account for the highest citation volume among vehicle makes—not because these trucks are defective, but because they are the most common hazmat carriers on the road. If you operate one of these models, you share exposure with thousands of other drivers, which means even higher inspector scrutiny on your documents.
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Partner with your carrier's safety team: If your carrier has higher-than-average citation counts (like those with 11 or 7 citations in our records), ask to see their shipping paper training materials. A few minutes of training on what constitutes a complete description can prevent a citation that will follow you for years.