What 180.605K means in plain language
FMCSR 180.605K regulates how you mark the test date on hazardous materials containers and packaging. When you transport hazmat, the containers and packages must show when they were last tested or certified for safe transport—and that date marking must be visible, accurate, and legible.
This rule exists because hazmat containers degrade over time. A properly marked test date lets inspectors and handlers verify that a container is still certified for the dangerous goods it holds. If the date is missing, wrong, or illegible, you're in violation of 180.605K.
Unlike many hazmat rules, this violation does not automatically ground your truck. The requirement is straightforward: mark the date correctly and keep it readable.
What our enforcement data actually shows
Across our 13 million+ roadside inspection records, 180.605K is cited infrequently. We've recorded 14 all-time citations for this code, with 5 citations in the last 12 months and 1 in the last 90 days. This makes 180.605K ranked 2083rd out of 3,036 FMCSR codes by citation volume.
The out-of-service rate for 180.605K is 0.0%—none of the 14 drivers cited were placed out of service. This is substantially lower than the all-FMCSR average out-of-service rate of 31.4%, reflecting that test date marking violations are treated as minor documentation defects rather than safety-critical failures.
The rarity of enforcement suggests that most carriers mark test dates correctly, or that inspectors prioritize more serious hazmat violations when they conduct roadside checks.
Who gets cited most
Over the last 180 days, our inspection records show 3 citations for 180.605K, all in Texas. None resulted in an out-of-service order. The low volume means the data does not show material variation in enforcement severity across states.
Our all-time data shows citations spread across nine different carriers, each with a single citation. No carrier shows a pattern of repeat 180.605K violations in our database.
How severe is this compared to similar codes
Hazmat marking and labeling codes cover a spectrum of severity. Our data reveals stark differences:
General loading/unloading violations (177.834A-HMC and 177.834(a)) dominate enforcement with 3,954 and 3,839 citations respectively, and carry out-of-service rates of 99.2% and 97.9%—nearly certain OOS decisions.
Placarding violations (177.817(a)) show 2,274 citations with a 75.1% out-of-service rate, indicating that missing or incorrect placards are treated as serious breaches.
Placard condition issues (177.817(e)) and general hazmat packaging maintenance (172.602(c)(1)) have 0.0% out-of-service rates—the same as 180.605K—with 2,038 and 1,464 citations respectively. This suggests that marking and condition defects are often cited but rarely result in vehicle impoundment.
180.605K sits at the lower end of hazmat enforcement severity: rare citations, no out-of-service orders, and grouped with other documentation-level violations.
How to avoid it
Test date marking violations can be prevented with a straightforward pre-trip routine:
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Inspect all hazmat containers and packages before loading. Check that each one displays a legible, current test date. If a date is faded, worn, or missing, do not load that container.
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Verify the date format matches the shipper's documentation. Cross-check the date on the container against the shipping papers. Mismatches can trigger an inspection.
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Document what you inspect. Keep a brief log or photo record of test dates on hazmat loads. If stopped, you can quickly show an inspector that you performed due diligence.
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Know your fleet's hazmat containers. If you regularly haul the same types of goods, ask your safety manager which containers require test date marking and what the acceptable date range is.
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Pay attention during hazmat refresher training. Many drivers encounter this rule once in a classroom and forget it. Test date marking is a straightforward requirement—cement it into your pre-trip routine.
Our data shows that when 180.605K appears in an inspection, it often co-occurs with other hazmat violations such as placarding defects and movement of damaged packages. This suggests that test date marking issues sometimes reflect broader hazmat handling problems. If you receive a 180.605K citation alongside codes like 177.817A (Placarding violation), treat it as a sign to review your entire hazmat loading and documentation process, not just the test date.