FMCSR 172.516C1 — Placard Not Securely Affixed

No. Across our 13 million+ inspection records, 172.516C1 citations result in an out-of-service order only 2.9% of the time. Of the 68 all-time citations in our database for this code, just 2 trucks were placed out of service. This is significantly lower than the national FMCSR average out-of-service rate of 31.4%, making it one of the less severe placard violations you can receive.

First, verify your placards are securely fastened to all four sides of the vehicle as required. Inspect for damage or deterioration while you're at it. Our inspection data shows that 172.516C1 frequently co-occurs with lighting violations (393.9 appeared in 3 of the last 90 days' shared inspections) and with other placard specification issues (172.504A, 172.519, and 172.516A each appeared 1–2 times). Before your next inspection, walk your entire truck and confirm every placard is tight, visible, and legible.

Relative to the hazmat category, it's minor. Among peer placard codes, 172.516C1's 2.9% out-of-service rate is far lower than general loading violations (99.2% OOS) and movement of damaged hazmat (51.8% OOS), and even lower than general placarding violations (75.1% OOS). However, it's still higher than maintenance of Emergency Response information (0.0% OOS) and comparable to placard damage rules (1.6% OOS). The citation signals a maintenance issue, not a safety failure.

Texas leads by far, with 19 citations in the last 180 days and a 5.3% out-of-service rate. Illinois follows with 2 citations (0.0% OOS), and North Carolina has 1 citation (0.0% OOS). If you operate in Texas, placard security is worth extra attention during your pre-trip inspection. Our data shows Texas accounts for most of the enforcement activity in this code.

Moderate urgency. Over the last 12 months, our records show 38 citations for 172.516C1, trending between 1–6 per month, with no clear seasonal spike. In the last 90 days, 11 citations were issued. Since the out-of-service rate is low (2.9%), the violation itself won't ground you. But it signals inadequate pre-trip inspection. Secure or replace any loose placards before your next roadside check to avoid repeat citations and maintain your inspection record.

Freightliners dominate, with 24 all-time citations for this code, followed by Kenworths at 13 citations. Other makes at 9, Utilities at 6, and Wancells at 6 round out the top five. If you operate a Freightliner or Kenworth hauling hazmat, pay closer attention to placard attachment hardware—these models appear most often in our 172.516C1 citation data.

Yes. DataQs is the FMCSA's formal challenge process for roadside inspection records. Since 172.516C1 is a visual/equipment finding (inspector observed loose or insecure placards), you can contest it if you believe the placard was actually secure at the time, the inspection was conducted improperly, or the citation was issued in error. Document photos, inspection logs, and maintenance records help. File your challenge through the FMCSA's CSA portal within the 30-day window from the inspection date.

This code does not carry an out-of-service order, so immediate federal fine authority is limited. However, the citation still registers on your CSA record and may affect carrier safety metrics and insurance. Your state may assess penalties or violations. The impact depends on your safety profile—a single citation is less serious than a pattern. Consult your carrier's safety manager or a compliance professional to understand any CSA points multiplier or state fine applicable to your citation.