What 172.313(b) means in plain language
172.313(b) falls under the hazardous materials regulations and addresses specific packaging or documentation requirements for materials classified as hazardous. This rule ensures that hazmat shipments meet federal standards for safe transport, protecting you, other road users, and the environment.
When you transport hazardous materials, the regulation requires compliance with detailed handling, marking, and preparation rules before the load ever leaves the shipper's facility. If an inspector finds that your shipment doesn't meet these packaging or documentation standards, you can be cited at roadside—even if the violation didn't cause an accident or immediate danger.
The violation focuses on the condition and correctness of how the hazmat load was prepared or documented, not on your driving behavior or vehicle maintenance.
What our enforcement data actually shows
Our inspection records show 172.313(b) is rarely cited. Across our database of 13 million roadside inspections, we recorded just 1 citation all-time for this code, with 0 citations in the last 12 months and 0 in the last 90 days. That single citation resulted in 0 out-of-service placements, giving this code a 0.0% out-of-service rate.
For context, the all-FMCSR average out-of-service rate stands at 31.4%, meaning 172.313(b) sits well below the typical enforcement severity. This code ranks #2796 of 3,036 FMCSR codes by citation volume, placing it among the least-cited regulations in the federal framework.
The extremely low citation frequency suggests that most carriers and drivers are meeting this requirement, or that inspectors rarely encounter violations in the field. Either way, the data indicates this is not a high-enforcement priority in routine roadside operations.
Who gets cited most
With only 1 citation in our database, meaningful state-level or fleet-level patterns cannot be established. Our data shows LEESER TX INC (USDOT 66011) received 1 citation for this code. The limited enforcement volume means you should not infer that any particular carrier, fleet type, or region faces elevated risk for this violation.
However, the fact that even one citation was recorded in Texas suggests that hazmat shipments originating from or passing through that state may be subject to inspection. If you regularly haul hazmat loads, your risk of encountering this code at scale remains minimal based on historical data.
How severe is this compared to similar codes
Hazmat-related codes in the same category show dramatically different enforcement patterns. Our data reveals that similar loading and placarding violations are cited far more frequently and carry much higher out-of-service rates.
For example, 177.834A-HMC (general loading/unloading hazmat violations) generated 3,954 citations with a 99.2% out-of-service rate—meaning nearly all drivers cited were placed immediately out of service. Similarly, 177.834(a) resulted in 3,839 citations with a 97.9% OOS rate. Even placard-related violations like 177.817(a) saw 2,274 citations with a 75.1% OOS rate.
By contrast, 172.313(b)'s single citation and 0.0% OOS rate suggest this particular packaging or documentation requirement is either easier to comply with or rarely inspected. Some hazmat codes like 172.516(c)(6) (placard damaged, deteriorated, or obscured) show 1,796 citations with only a 1.6% OOS rate, indicating that even when hazmat violations are found, not all result in immediate out-of-service action. This suggests 172.313(b) may involve a more technical or documentation-focused element rather than a critical safety violation that stops vehicles on the spot.
How to avoid it
Because enforcement data for 172.313(b) is minimal, prevention guidance must center on best practices for hazmat compliance:
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Verify shipper compliance before accepting the load. Check that the shipper has properly classified the material, applied correct markings, and completed all required documentation. Do not assume the paperwork is complete just because it's attached to the manifest.
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Inspect packaging integrity before departure. Look for damage, leaks, or deterioration on boxes, drums, or containers. If you spot any issue, refuse the load or request that the shipper repackage it. Do not attempt to repair or wrap damaged hazmat packaging yourself.
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Match the physical shipment to the shipping papers. Count packages, verify hazard classes, and confirm that the number of units matches the paperwork. Discrepancies between documentation and what's on your truck invite inspection focus.
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Request clarification on any ambiguous label or marking. If you don't understand a placard, marking, or classification on the paperwork, ask the shipper before you leave the dock. Hazmat rules are strict, and guessing can result in a citation.
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Keep hazmat documentation easily accessible and legible. During an inspection, you need to produce shipping papers, emergency response information, and any required placards within seconds. Faded, water-damaged, or missing paperwork can trigger a violation even if the load itself is fine.
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Use a pre-trip checklist specific to your hazmat routes. Note the hazard class, proper placarding location, required documentation, and emergency procedures for each load type you regularly carry. This muscle memory helps catch problems before an inspector does.
Given the rarity of this citation in our database, focus your compliance effort on the high-frequency hazmat violations—loading, unloading, and placarding—which carry much steeper enforcement rates and immediate out-of-service consequences.