FMCSR 172.406E: Duplicate Label Citation Q&A

No. Across our 13 million inspection records, 172.406E has never resulted in an out-of-service order. All 5 all-time citations in our database resulted in violations only—0% OOS rate. However, this is significantly more lenient than peer hazmat labeling codes: placarding violations under 177.817(a) are OOS 75.1% of the time, and general loading violations under 177.834A-HMC trigger OOS at 99.2%. Your truck stays in service, but the citation still carries violation points.

Step 1: Photograph the load and labeling state before moving the vehicle. Step 2: Check if you have other hazmat label violations on the same inspection—our data shows 172.406E frequently co-occurs with missing RAM category labels (172.203D4), improperly positioned RAM labels (172.403F), and general labeling errors (172.403G). Step 3: Review your placarding procedure with your carrier's hazmat compliance officer. Step 4: Document the corrective action taken. Step 5: Request inspection records to verify citation details for potential DataQs challenge.

172.406E ranks #2406 of 3,036 FMCSR codes by citation frequency—very low enforcement volume. The national average OOS rate across all FMCSR codes is 31.4%; 172.406E's 0% rate is far below that threshold. Peer codes in hazmat labeling show sharply higher severity: 177.817(a) placarding violations are OOS 75.1% of the time, and 177.834A loading violations are OOS 99.2% of the time. This citation is documentation-focused, not equipment-focused, making it less operationally severe.

Our inspection database does not include CSA point weights for individual FMCSR codes. CSA severity multipliers are assigned by FMCSA and vary by BASIC category and time window (violations within 30 days accumulate faster). To find the exact CSA impact for 172.406E, check your roadside inspection report—it will list the violation code and corresponding points—or contact your carrier's safety department, which has access to your CSA portal profile.

Very uncommon. Across our database of 13 million inspections, we have recorded only 5 all-time citations for 172.406E, with just 1 citation in the last 90 days. Over the last 12 months, 4 citations were issued. The violation is so rare that only Texas appears in the top-state list with 2 citations in the last 180 days. Statistically, this is among the least-cited hazmat regulations, suggesting most carriers comply with duplicate label requirements or inspectors rarely test for it.

Potentially, yes. DataQs (FMCSA's Roadside Data Repair program) allows drivers and carriers to contest inspection findings on the basis that they are inaccurate, irrelevant, or unjust. Since 172.406E is a labeling/documentation violation rather than an equipment or safety measurement error, your challenge would focus on whether the duplicate label was actually missing or improperly displayed. You have up to 90 days from the inspection date to file. Submit photos, load manifests, and labeling procedures as evidence to support your case.

Texas is the only state with multiple 172.406E citations in our data: 2 citations over the last 180 days, both with 0% OOS rate. Beyond Texas, enforcement is sporadic—only 4 citations nationwide in the last 12 months and 1 in the last 90 days. This violation does not show strong geographic clustering, indicating either low inspector awareness or very high nationwide compliance. If you operate primarily in Texas, remain especially attentive to duplicate labeling procedures.

Flat, with minimal volume. Over the last 12 months, our records show 1 citation each in May 2025, August 2025, November 2025, and February 2026—a steady, infrequent pace with no trend toward increase. The rarity and even distribution suggest this is not an enforcement priority and may reflect low inspector focus on duplicate labeling checks rather than widespread compliance improvement. Monitor your carrier's trend data; a sudden increase in your local region would be the first warning sign.