FMCSR 172.403(b) Citations: What Drivers Need to Know

No. Our inspection records show 172.403(b) has a 0.0% out-of-service rate across all citations in our database. Both trucks cited for this violation were allowed to continue operating. For context, the average FMCSR code carries a 31.4% OOS rate, so this citation is significantly less likely to result in an immediate roadside shutdown compared to other hazmat violations you might encounter.

It's among the least serious hazmat citations. While peer codes in the hazardous materials category show OOS rates ranging from 0.0% to 99.2%, 172.403(b) sits at the lower end. For example, general loading/unloading hazmat violations (177.834A-HMC) have a 99.2% OOS rate, and placard violations (177.817(a)) have 75.1%. By contrast, 172.403(b) enforcement is extremely rare—only 2 citations across our 13 million inspection records—and no trucks were removed from service.

Very rarely. Across our database of 13 million roadside inspections, 172.403(b) has only 2 all-time citations, with zero citations in the last 12 months and zero in the last 90 days. This makes it the #2651 least-cited FMCSR code out of 3,036 total codes. If you've been cited for it, you're part of an exceptionally small group of drivers.

First, document the citation details: the inspector's badge number, inspection location, date, and the exact finding. Request a copy of the inspection report from the inspector on scene. Review your hazmat shipping papers, packaging, and labeling against federal regulations to identify what triggered the citation. Contact your dispatcher and safety manager right away so your carrier can assess the load and coordinate next steps. Because this violation is not OOS-eligible, you will not be detained, but the citation remains on your record and CSA profile.

Yes, you can file a DataQs (Dispute Resolution) request through the FMCSA to contest the citation if you believe it was issued in error or based on incorrect facts. The DataQs process allows drivers and carriers to challenge inspection findings within 90 days. Success depends on whether the violation was based on documentation (e.g., missing paperwork) or a physical condition. Gather all evidence—shipping papers, photos, maintenance records—before filing. Your carrier's compliance department can help prepare the case.

According to our records, NVI LLC (USDOT 1450747) and CAMERON LOGISTICS LLC (USDOT 2550913) each received one citation for 172.403(b). Both citations involved hazmat transport or handling, and neither resulted in an out-of-service order. If you drive for a carrier not on this list, you're operating within a segment that has had very little enforcement activity for this code.

Enforcement of this violation is essentially flat and minimal. Our data shows zero citations in the last 90 days and zero in the last 12 months, compared to 2 all-time citations in our database. This suggests that 172.403(b) is either rarely encountered in the field or enforcement priorities have shifted elsewhere. For hazmat compliance, focus on the high-volume codes like loading/unloading violations (177.834A-HMC with 3,954 citations) to build safer practices.

Both. FMCSA citations are recorded against both the driver (on your CSA Behavior Analysis and Safety Improvement (BASI) profile) and the carrier (on the company's Safety Management Cycle). A single violation counts toward both parties' safety metrics, affecting your personal record and your carrier's safety rating. This is standard across all FMCSR codes, not unique to 172.403(b). Work with your carrier's safety team to ensure the citation is handled correctly and disputes filed if warranted.