FMCSR 172.403(a) Citations: Enforcement Data & Driver FAQs

No. Across our inspection records, the out-of-service rate for 172.403(a) citations is 0.0%—none of the trucks cited for this violation were placed out of service. This code is not OOS-eligible under FMCSA rules. However, compare this to the national average OOS rate of 31.4% across all FMCSR codes: you're in a much safer category. That said, other hazmat placarding violations in the same category (like 177.834a at 99.2% OOS rate) are far more serious, so context matters.

It's on the lower end of severity within hazmat enforcement. Our database shows only 1 citation for this code across all time—making it the #2,796 ranked FMCSR code by citation volume out of 3,036 codes. For context, related hazmat violations like 177.834a have logged 3,954 citations with a 99.2% out-of-service rate, while 172.502(a)(1) (placarding general requirements) has 1,820 citations at 18.5% OOS rate. The rarity of 172.403(a) citations suggests inspectors find clear, egregious violations elsewhere more often.

First, document the citation details: date, location, inspector name, and the specific requirement you allegedly violated. Second, review the violation narrative on your citation to understand whether it's a labeling, marking, or packaging defect. Third, if it involves hazmat documentation or packaging integrity, have your cargo handler or safety manager inspect identical shipments to prevent repeat citations. Fourth, request the inspection report (Form MCSA-5381) within 30 days. Fifth, if you believe the citation is factually incorrect, file a DataQs (FMCSA Safety Management System) rebuttal with supporting photos or shipper documentation.

172.403(a) sits in a notably lenient band. Its 0.0% OOS rate contrasts sharply with peer codes: 177.834a (general loading/unloading hazmat) at 99.2% OOS, 177.817(a) (placarding violation) at 75.1%, and 177.823(a) (damaged hazmat movement) at 51.8%. Even 172.502(a)(1) (placarding general requirements), the closest cousin, has an 18.5% OOS rate. This suggests 172.403(a) citations are issued for technical or minor documentation gaps rather than unsafe equipment or broken packaging.

Yes. The FMCSA DataQs rebuttal process allows you to challenge inspection findings within 30 days of the citation. Log into your FMCSA account, locate the record under "Safety Management System," and submit written evidence that contradicts the violation (e.g., photos showing compliant labeling, dated maintenance records, or shipper affidavits). Since 172.403(a) likely involves documentation or marking compliance rather than equipment failure, photographic or procedural evidence is your strongest tool. The FMCSA will review your submission and either sustain or remove the citation.

Rarely. Our inspection records show 1 all-time citation for 172.403(a), with 0 citations in the last 12 months and 0 in the last 90 days. This code is among the least-cited in the FMCSR library, ranking #2,796 out of 3,036. If you've been cited, you're statistically in a very small group. The scarcity suggests either the violation is uncommon, inspectors prioritize related codes (like 177.834a or 177.817), or compliance is widespread in industry practice.

Our all-time records show 1 citation issued to Nextier Completion Solutions Inc (USDOT 1617384). This represents the entire enforcement history for this code in our 13 million+ inspection database. No other carriers appear in the citation record, underscoring how infrequently this violation is encountered and cited.

Low immediate urgency for out-of-service risk—the 0.0% OOS rate means no truck has been pulled from service for this violation. However, don't ignore it. A citation still creates a record under your carrier's CSA profile and can affect safety ratings over time. With zero citations in the last 90 days, there's no trend suggesting a spike in enforcement. Take time to understand the specific requirement, correct the issue (typically documentation or marking), and prepare a DataQs rebuttal if you believe the citation is unfounded. Address it within 30 days to protect your record.