172.301B — Hazmat marking on packages defective
FMCSA violation code under Hazardous Materials. 4 events recorded in roadside inspections. Severity weight: 5.
Violation Description
Packages, freight containers, or transport vehicles not properly marked with required hazardous materials markings.
About This Violation Code
Code 172.301B falls under the Hazardous Materials BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 5 (scale 1-10, higher = more severe).
When this violation is cited during a roadside inspection, it contributes to the carrier's Hazardous Materials BASIC score. Carriers with high BASIC percentiles may be prioritized for FMCSA interventions including warning letters, investigations, or compliance reviews.
Regulatory Reference
Federal Motor Carrier Safety Regulations
This violation references 49 CFR 172.301B in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 172.301B is most commonly cited (last 180 days)
Click a state to see roadside inspection activity, top stations, and carrier profiles in that jurisdiction.
Citation Trend (12 months)
Monthly count of 172.301B citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 172.301B most often (last 180 days)
Top Carriers Cited
Ranked by frequency • 4 carriers total
Top Carriers with 172.301B Violations
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | ENDURA PRODUCTS CORP | 605474 | 1 |
| #2 | DUPUY OXYGEN AND SUPPLY CO INC | 573832 | 1 |
| #3 | PRO JECT CHEMICALS LLC | 898781 | 1 |
| #4 | ACME TRUCK LINE INC | 52767 | 1 |
Recent Inspections
Latest inspections where 172.301B was cited • 4 total events