FMCSR 172.400 Hazmat Labeling: Will I Get Out of Service?

No. Our inspection records show a 0.0% out-of-service rate for code 172.400 across all citations in our database. This violation is not OOS-eligible, meaning even if cited, your vehicle will not be placed out of service solely for this violation. However, if hazmat labeling defects are found alongside other hazmat violations—such as placarding or loading issues—those co-occurring codes carry much higher OOS rates (up to 99.2% for general loading/unloading violations), so the combination matters.

172.400 carries a severity weight of 5 points. CSA point totals depend on when the citation occurred and how it rolls up in the 30-day and 12-month periods on your carrier's BASICS scorecard. A single 5-point violation during a 30-day window contributes to your carrier's Hazardous Materials BASIC score. The cumulative weight matters more than any single citation—what drives a high HM BASIC score is the frequency and severity pattern over time.

1. Document the finding. Get a copy of the inspection report and photograph the cited package/label if possible.
2. Contact your dispatcher or safety manager. Report the exact labeling defect and the package or shipment ID.
3. Verify the label requirement. Cross-check the hazard class against the shipper's documentation to confirm whether the label was truly missing or incorrect.
4. Correct and prevent. If the label was wrong or missing, ensure your pre-trip hazmat inspection process catches this before the next load.
5. Consider contacting your carrier's compliance team if the citation seems inconsistent with how you labeled the package per the bill of lading.

172.400 is relatively low-enforcement but sits in a category with much more serious violations. Peer codes in the same Hazardous Materials category show dramatically higher citation volumes and OOS rates: general loading/unloading violations (177.834A-HMC) have 3,954 citations with a 99.2% OOS rate, while placarding violations (177.817a) total 2,274 citations at 75.1% OOS. Our data shows 0 citations for 172.400 in the last 12 months, making it uncommon but not trivial when it does occur. The implication: inspectors focus more heavily on placard placement and cargo loading than package-level labeling.

Yes. The DataQs (Safer System for Carriers by Evaluation) roadside data review process allows you and your carrier to challenge inspection findings within 90 days of the citation. For a labeling violation, contestability depends on evidence: if you have proof that the package was labeled correctly per the hazmat regulations and the shipper's documentation, you have grounds to dispute. Submit the bill of lading, shipper's certification, and photos showing the correct label. FMCSA examines the citation record and either upholds or removes it from your CSA score.

Across our 13 million+ inspection records, we have recorded 0 citations for code 172.400 in the last 12 months. This means the violation is extremely rare in enforcement nationwide. This does not mean you should ignore hazmat labeling requirements—it suggests inspectors encounter this defect infrequently, either because drivers and shippers comply consistently, or because inspectors prioritize placarding and loading/unloading violations (which far outnumber package labeling checks). Focus on front-end compliance rather than expecting widespread enforcement activity.

Fix it before the next hazmat shipment leaves. Although 172.400 carries a 0.0% OOS rate and has zero citations in the last 90 days, hazmat labeling is a non-negotiable legal requirement. Mislabeled packages create liability and safety exposure that extends far beyond CSA scoring. The real urgency is prevention: integrate pre-load hazmat labeling checks into your pre-trip inspection so you catch discrepancies with the manifest before the inspector does. Peer violations in loading and placarding (which co-occur with labeling issues) carry OOS rates up to 99.2%, so preventive compliance saves your operation.

Hazmat violations roll into both your driver record and your carrier's Safety Management Scorecard. The 172.400 severity weight of 5 points feeds into the Hazardous Materials BASIC, which is owned by the carrier but impacts your employability and the company's insurance and audit risk. Your individual driving record also logs the citation; repeat hazmat violations can trigger a review of your hazmat endorsement qualifications. So while the CSA score is carrier-level, the violation stays on your history and signals a hazmat compliance gap.