What 180.407(a) means in plain language
FMCSR 180.407(a) requires that cargo tanks meet specific inspection and testing standards before they're used to transport hazardous materials. The regulation mandates that these specialized containers must not be put into service unless they have been inspected and tested as required by the hazmat transportation rules.
In practical terms: if you're hauling hazmat in a cargo tank, that tank must have current, documented proof that it passed required safety checks. Those checks verify the structural integrity, welding quality, and safe operation of the tank itself. Inspectors at roadside look for evidence that these tests were performed within the required timeframe and that records are available.
A citation for 180.407(a) means an inspector found that your cargo tank either lacked required inspection documentation, had expired test certificates, or the tank itself showed no evidence of having been tested at all.
What our enforcement data actually shows
Across 13 million inspections, we have recorded 324 all-time citations for 180.407(a). In the last 12 months, no citations for this code have been recorded in our database. In the last 90 days, zero citations were issued.
Out of the 324 all-time citations, only 6 resulted in an out-of-service order—an OOS rate of 1.9%. This is substantially lower than the all-FMCSR average OOS rate of 31.4%. That gap suggests inspectors typically issue warnings or record violations that don't immediately ground your vehicle. However, the very low enforcement volume in recent periods indicates this violation has become rare, likely due to improved compliance and stricter pre-trip practices in the hazmat transport industry.
180.407(a) ranks #1065 of 3,036 FMCSR codes by citation volume, placing it well outside the most-cited violations.
Who gets cited most
Our inspection records show that cargo tank inspection citations cluster among carriers operating specialized hazmat equipment. A W YANDELL TRUCKING LLC (USDOT 1577701) leads the all-time list with 6 citations, followed by LOMBARDO ENVIRONMENTAL INC (USDOT 3120681), H2 ENERGY INC (USDOT 3981047), and WINDSTAR TRUCKING LLC (USDOT 2126272), each with 4 citations.
The citation data does not break down by state within our current snapshot, so we cannot identify specific high-risk jurisdictions for this particular code. What is clear is that the carriers appearing in our records are primarily those operating cargo tanks for liquid transport—environmental services, energy products, and construction-related liquid hauls.
How severe is this compared to similar codes
Within the Hazardous Materials category, 180.407(a) sits at the low end of enforcement severity. Compare it to peer violations:
- 177.834(a) — General loading/unloading hazmat: 3,839 citations and a 97.9% OOS rate. This code sees over 11 times more citations than 180.407(a), and nearly every violation results in immediate out-of-service action.
- 177.817(a) — Placarding violation: 2,274 citations and a 75.1% OOS rate. Placard violations are 7 times more common and far more likely to ground a vehicle.
- 172.516(c)(6) — Placard damaged, deteriorated or obscured: 1,796 citations and a 1.6% OOS rate. This peer code has a similarly low OOS rate to 180.407(a), indicating that documentation and condition defects in hazmat transport are often correctable on the roadside.
The pattern suggests that 180.407(a) violations are taken seriously in terms of compliance, but enforcement is rare and consequences for first-time or isolated violations tend to be administrative rather than operational.
How to avoid it
Preventing a 180.407(a) citation requires documenting proof of your cargo tank's current inspection and test status before you hook up and before you roll.
Concrete pre-trip steps:
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Verify inspection certificates are on board or accessible: Before accepting a cargo tank for a load, confirm that inspection and test certificates are present and legible. Know the expiration dates of all required certifications. Federal regulations specify inspection intervals; your dispatcher or the tank owner should provide dated paperwork.
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Inspect the tank's physical condition during pre-trip: Walk around the tank. Look for obvious damage, deterioration, rust, or signs of repair that might not be documented. If you spot structural issues, report them immediately and do not use the tank until maintenance records are complete.
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Confirm the tank is registered for the hazmat you're hauling: Different hazmat types require different tank specifications and certification categories. A tank certified for non-flammable liquids may not be approved for flammables. Verify that the specific commodity you're transporting matches the tank's authorized use.
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Keep records organized and within reach: Store inspection and test documents in a plastic sleeve in your cab or a digital backup on your phone. Inspectors need to see them quickly; delays or missing paperwork trigger citations even if the tank itself is compliant.
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Work with carriers that maintain tank inventories properly: If you lease tanks, partner with operators who stay current on inspections. Our data shows that dedicated hazmat carriers maintain higher compliance rates because they manage their tank fleets centrally.
The rarity of recent 180.407(a) citations suggests the industry has tightened inspection discipline. Your best defense is treating cargo tank certification as non-negotiable, not optional.