FMCSR 172.332(c): Hazmat Class ID Missing—Q&A

No. Across our 13 million inspection records, only 1 out of 57 citations for 172.332(c) resulted in an out-of-service order—a 1.8% OOS rate. This is significantly lower than the 31.4% average OOS rate across all FMCSR codes, and well below peer hazmat violations like general loading/unloading violations (99.2% OOS) or placard damage under 172.516(c)(6) (1.6% OOS). You'll face a citation and CSA points, but removal from service is unlikely.

This violation carries a CSA severity weight of 4. The actual points added to your safety record depend on when the citation was issued: violations from the last 30 days count at full weight, violations from 31–180 days count at 75% weight, and violations from 181–365 days count at 25% weight. The 4-point weight applies within those windows. Your motor carrier safety consultant or your carrier's safety manager can calculate your exact CSA score impact using your specific citation date.

Immediate steps: (1) Photograph the placard and note its condition and position on your vehicle; (2) obtain a copy of the inspection report from the officer; (3) verify the class or division identification number is actually missing or obscured; (4) report the citation to your carrier's safety or compliance team within 24 hours; (5) if the number was present but the officer missed it, gather photographic evidence for a DataQs (FMCSA database challenge) submission. Do not alter the placard before documentation.

It's one of the least serious hazmat placard violations. Our data shows 172.332(c) ranks #1588 out of 3,036 FMCSR codes by citation volume—only 57 citations all-time—and has a 1.8% OOS rate. Compare this to peer codes: general loading/unloading (177.834A-HMC) has 99.2% OOS, placarding violations (177.817(a)) have 75.1% OOS, and movement of damaged hazmat (177.823(a)) has 51.8% OOS. Your violation is documentation-focused, not safety-catastrophic.

Yes, if the evidence supports it. FMCSA's DataQs process allows you to challenge violations through your carrier or directly (as of recent rule changes) if you believe the citation is inaccurate. For 172.332(c)—a placard identification issue—you can dispute it if: (1) the class/division number was actually displayed and the inspector missed it, or (2) the number was conditionally acceptable under hazmat rules. Submit photographs and regulatory references with your DataQs petition. Disputes typically resolve within 45–90 days.

Our inspection records show only 57 all-time citations for this code, concentrated among a small number of carriers. TRANSPORTES ARLEQUIN SA DE CV (USDOT 1879622) accounts for 3 citations, STERICYCLE INC (USDOT 397962) has 2, and eight other carriers have 1 each. The violation is so rare nationally that state-level ranking is not statistically meaningful. Vehicle makes cited include Volvo and Freightliner (5 each) and Kenworth (4), but no geographic pattern emerges from this low volume.

Low urgency for repair, moderate urgency for compliance. Our data shows zero citations in the last 90 days and zero in the last 12 months—this is an exceptionally rare violation. However, it must be corrected before your next hazmat haul: verify that the proper class or division identification number is clearly visible on all four placards. Once corrected, the citation remains on your CSA record but does not trigger automatic removal from service. Coordinate with your carrier to ensure placard inspection procedures catch this before roadside inspection.

Both. FMCSA records violations under two safety-related CSA BASIC categories: one for the carrier and one for the driver. The citation will appear on your driver qualification file (DQF) and your motor carrier's safety profile. If you move to a new employer, the violation stays in your history for 12 months, affecting your safety rating in hiring decisions. Your new carrier's safety manager will see it. Ensure your carrier documents corrective training to demonstrate you understand placard compliance.