Will 172.403B put you out of service? What comes next after citation? Real data from 13M+ roadside inspections.
Ranks #2,502 of 3,146 FMCSR codes by citation frequency • OOS rate of 0.0% is below the FMCSR-wide average of 33.3%.
Wrong category RAM label
Direct answers grounded in TruckCodex inspection data
No. Across our 13 million inspection records, 172.403B has never resulted in an out-of-service order. The 0.0% OOS rate for this code is dramatically lower than the all-FMCSR average of 31.4%. This violation is cited but does not trigger immediate removal from service, though you should still address the underlying hazmat compliance issue.
172.403B is a hazardous materials labeling requirement. The violation typically involves improper labeling, placement, or documentation of hazardous material packages. Since this code rarely appears in citations—only 4 all-time in our database—it reflects a relatively uncommon specific labeling gap. Check the inspection report for the exact deficiency, as co-occurring violations often involve related RAM (Radioactive Material) label issues.
172.403B is less serious than many peer hazmat codes. General loading/unloading violations (177.834A-HMC, 177.834(a)) have OOS rates above 97%, while placarding violations (177.817(a)) are out-of-service in 75.1% of cases. By contrast, 172.403B's 0.0% OOS rate and only 4 all-time citations suggest it is enforced rarely and treated as a documentation or minor labeling matter rather than a critical safety violation.
Yes. Use the FMCSA's DataQs (DataQ) system to dispute factual errors on your inspection report. If the inspector incorrectly documented label placement, carrier information, or package markings, you can challenge the citation within 90 days of the inspection. DataQs is designed for documentation and observation disputes. File through the FMCSA portal and provide photos or packaging documentation that proves compliance.
In the last 180 days, Texas reported 1 citation of 172.403B with a 0.0% OOS rate. Our dataset shows only 4 total citations across all states in the inspection history, making this violation extremely rare nationally. This low frequency means 172.403B is not a priority enforcement focus and suggests most carriers successfully comply with this specific labeling requirement.
Moderate urgency. While the 0.0% OOS rate means your truck won't be shut down, hazmat labeling violations carry safety and regulatory risk. Over the last 90 days, we recorded 1 citation of 172.403B, and it co-occurred with 6 related RAM labeling codes on the same inspection. Correct labeling prevents downstream penalties and ensures driver and public safety. Address it within 30 days of citation to show good-faith compliance effort.
172.403B is a carrier violation. Hazmat compliance violations are attributed to the company's safety record and appear in the Hazardous Materials BASIC in the carrier's CSA profile, not the driver's. However, if you were driving during the violation, it may be noted in your employment history. Work with your fleet safety manager to ensure the violation is resolved at the carrier level to prevent future citations and CSA score impact.
Where 172.403B is most commonly cited (last 180 days)
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.