172.402A — No label for subsidiary hazard
FMCSA violation code under Hazardous Materials. 23 events recorded in roadside inspections. Severity weight: N/A.
Violation Description
No label for subsidiary hazard
About This Violation Code
Code 172.402A falls under the Hazardous Materials BASIC category in FMCSA's Safety Measurement System (SMS).
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 172.402A in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 172.402A 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 172.402A citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 172.402A most often (last 180 days)
Often Cited Together
Other violations commonly found on the same inspection (last 90 days)
Citation patterns suggest related root causes (e.g., HOS violations paired with logbook errors).
Top Carriers Cited
Ranked by frequency • 20 carriers total
Top Carriers with 172.402A Violations
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | MAXFLOW CHEMICALS OF TEXAS LLC | 2369876 | 4 |
| #2 | ENDURA PRODUCTS CORP | 605474 | 1 |
| #3 | AGRI-EMPRESA TRANSPORTATION LLC | 266986 | 1 |
| #4 | REDHAWK COIL TUBING LLC | 3744906 | 1 |
| #5 | GREENWOOD MOTOR LINES INC | 63391 | 1 |
| #6 | PIRANHA SCIENTIFIC LLC | 3376573 | 1 |
| #7 | JOHNS SALES AND SERVICE INC | 2844515 | 1 |
| #8 | 5J OILFIELD TRUCKING LLC | 4221957 | 1 |
| #9 | RC STANDARD ENERGY SERVICES LLC | 4077076 | 1 |
| #10 | KEYSTONE CHEMICAL LLC | 2916602 | 1 |
| #11 | PRO JECT CHEMICALS LLC | 898781 | 1 |
| #12 | OLD DOMINION FREIGHT LINE INC | 90849 | 1 |
| #13 | M & W HOT OIL HOLDINGS LLC | 808302 | 1 |
| #14 | BASIN CHEMICAL SOLUTIONS LLC | 2883586 | 1 |
| #15 | STRATA WIRELINE LLC | 3949359 | 1 |
| #16 | NORTHCOTT SERVICES LLC | 3182423 | 1 |
| #17 | CREEDENCE INC | 2479521 | 1 |
| #18 | SOUTHWESTERN MOTOR TRANSPORT INC | 136555 | 1 |
| #19 | COCHRAN CHEMICAL COMPANY INC | 488136 | 1 |
| #20 | ALTOM TRANSPORT INC | 297572 | 1 |
Recent Inspections
Latest inspections where 172.402A was cited • 23 total events
Recent Inspections with 172.402A
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Feb 28, 2026 | 87191642 | TX | Level 2 | No |
| Feb 12, 2026 | 87079284 | TX | Level 2 | No |
| Jan 6, 2026 | 86877603 | TX | Level 1 | No |
| Dec 8, 2025 | 86553724 | TX | Level 2 | No |
| Nov 14, 2025 | 86353350 | TX | Level 2 | No |
| Nov 7, 2025 | 86299794 | TX | Level 2 | No |
| Sep 25, 2025 | 85892433 | TX | Level 2 | No |
| Aug 7, 2025 | 85533555 | TX | Level 2 | No |
| Jul 24, 2025 | 85362822 | TX | Level 2 | No |
| Jun 24, 2025 | 85093584 | TX | Level 2 | No |
| Jun 21, 2025 | 85031641 | TX | Level 2 | No |
| Jun 19, 2025 | 85002782 | TX | Level 2 | No |
| Jun 18, 2025 | 85031142 | TX | Level 2 | No |
| Jun 2, 2025 | 84877603 | TX | Level 2 | No |
| Apr 29, 2025 | 84616062 | TX | Level 1 | No |
| Apr 16, 2025 | 84431782 | TX | Level 2 | No |
| Apr 8, 2025 | 84407291 | TX | Level 2 | No |
| Apr 2, 2025 | 84307626 | TX | Level 2 | No |
| Apr 1, 2025 | 84341808 | TX | Level 2 | No |
| Feb 27, 2025 | 84052396 | TX | Level 2 | No |
| Jan 25, 2025 | 83708400 | TX | Level 1 | No |
| Dec 6, 2024 | 83439705 | TX | Level 2 | No |
| Oct 2, 2024 | 82834715 | LA | Level 2 | No |