What 180.415B means in plain language
When you operate a cargo tank vehicle transporting hazardous materials, federal regulators require specific test and inspection markings to be present and visible on the tank itself. These markings document that the tank has passed required safety tests and meets current inspection standards. They serve as proof that your cargo container is fit for the hazardous cargo it carries.
Think of these markings as the cargo tank's "safety certificate" painted or attached to the vessel. Inspectors at roadside checks are looking for evidence that your tank has been properly tested and inspected within the required timeframe. If those markings are missing, faded beyond legibility, or simply not present on the vehicle, you can be cited under 180.415B.
What our enforcement data actually shows
Across our 13 million+ real roadside inspection records, 180.415B citations are relatively uncommon. All-time, we have recorded 142 citations for this violation. In the last 12 months, we documented 77 citations, and in the last 90 days, 14 citations appeared in our database.
What stands out immediately: the OOS rate for 180.415B is 0.0%. None of the 142 all-time citations resulted in a vehicle being placed out of service. This is a dramatic difference from the all-FMCSR average OOS rate of 31.4%. Inspectors are citing this violation but are not deeming vehicles unsafe enough to remove from the road at the point of inspection. That does not mean the citation is inconsequential—it means the violation is being treated as a documentation or marking issue rather than an immediate safety hazard.
Ranked against all 3,036 FMCSR codes by citation volume, 180.415B sits at #1323, placing it well below the high-frequency violations that dominate enforcement activity.
Who gets cited most
Over the last 180 days, Texas leads all states with 39 citations for 180.415B, followed by Iowa with 2 citations and Illinois with 1 citation. All three states maintained a 0.0% OOS rate, meaning no vehicles were placed out of service in any of those jurisdictions for this violation. The enforcement pattern is heavily concentrated in Texas, which accounts for the vast majority of recent 180.415B activity in our database.
When looking at carriers over the all-time record, our data shows fleets such as QUALITY TANK SA DE CV with 10 citations and MAVERICK TANK LINES LLC with 5 citations leading the list. These numbers reflect the hazmat and fuel transportation sector, where cargo tanks are prevalent. The citation count does not indicate negligence on the part of any carrier—it reflects the volume of cargo tank operations those fleets conduct.
How severe is this compared to similar codes
Within the Hazardous Materials category, 180.415B sits in a much lower enforcement tier than related violations. For comparison:
- 177.834A-HMC (General loading/unloading hazmat) has generated 3,954 citations with a 99.2% OOS rate—meaning nearly every instance results in immediate vehicle removal.
- 172.502(a)(1) (Placarding general requirements) has 1,820 citations with an 18.5% OOS rate.
- 172.516(c)(6) (Placard damaged, deteriorated, or obscured) has 1,796 citations but only a 1.6% OOS rate, which is closer to 180.415B's enforcement philosophy.
The contrast is clear: inspectors treat 180.415B violations as administrative or cosmetic marking issues, not as immediate operational hazards. Loading and unloading violations, by contrast, carry severe consequences.
How to avoid it
Based on co-occurring violations in our recent data, here are concrete steps to stay compliant:
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Before every shift, inspect the cargo tank for visible markings. Look for the test date, inspection date, and certification labels on the side or top of the tank. If markings are faded, peeling, or missing, report it to your dispatcher or fleet safety manager before rolling. Our data shows that 4 recent 180.415B citations co-occurred with inoperable lighting violations (393.9), suggesting inspectors are conducting thorough vehicle walkarounds—marking inspection will be part of that.
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Coordinate with your fleet's maintenance team on marking replacement. If your tank operates under carriers like those in our top-cited list, you likely have high compliance expectations. Proactively schedule tank re-certification and remarking before existing markings degrade. This is cheaper than a citation.
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Understand your tank's certification timeline. Cargo tanks require periodic testing and re-inspection on defined schedules depending on the hazmat classification and tank type. Know when your vehicle's next test is due and ensure markings are updated immediately after testing. Two recent citations co-occurred with 396.17C (No proof of periodic inspection), indicating inspectors are cross-checking certification records.
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During pre-trip, photograph or document tank markings. If you're operating unfamiliar equipment or a leased tank, visually verify the markings are legible before accepting the vehicle. This protects you from inheriting a compliance issue from the lessor or previous operator.
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Pay special attention if you drive Kenworth, Peterbilt, or Heil models. Our historical data shows these vehicle makes appear frequently in 180.415B citations (KW: 30 citations, PTRB: 31, HEIL: 16). This likely reflects their prevalence in the tank truck sector, but be extra diligent with pre-trip marking checks if you operate one of these platforms.