172.504(a) — Placarding - table 1 materials
FMCSA violation code under Hazardous Materials. 1,399 events recorded in roadside inspections. Severity weight: 8.
Violation Description
Failure to placard for Table 1 hazardous materials (high hazard) at any quantity.
About This Violation Code
Code 172.504(a) falls under the Hazardous Materials BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 8 (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 172.504 in the Federal Motor Carrier Safety Regulations.
Top Carriers Cited
Ranked by frequency • 984 carriers total • Page 1 of 40
Top Carriers with 172.504(a) Violations
Showing 25 of 984
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | GREENWOOD MOTOR LINES INC | 63391 | 39 |
| #2 | XPO LOGISTICS FREIGHT INC | 241829 | 25 |
| #3 | OLD DOMINION FREIGHT LINE INC | 90849 | 17 |
| #4 | ESTES EXPRESS LINES | 121018 | 16 |
| #5 | SILVICOM INC | 1864495 | 14 |
| #6 | SAIA MOTOR FREIGHT LINE LLC | 29124 | 11 |
| #7 | CENTRAL TRANSPORT LLC | 661173 | 10 |
| #8 | SOUTHEASTERN FREIGHT LINES INC | 63419 | 10 |
| #9 | E F CORPORATION | 113693 | 9 |
| #10 | ECO TRANSPORTES INTERNACIONALES SA DE CV | 558117 | 8 |
| #11 | TFORCE FREIGHT INC | 121058 | 8 |
| #12 | USA LOGISTICS INC | 1892938 | 8 |
| #13 | AAA COOPER TRANSPORTATION | 92261 | 8 |
| #14 | AVERITT EXPRESS INC | 36684 | 8 |
| #15 | J B HUNT TRANSPORT INC | 80806 | 6 |
| #16 | BASIN TRANSPORTATION LLC | 2559935 | 6 |
| #17 | COVENANT TRANSPORT LLC | 273818 | 6 |
| #18 | ACE TRANSPORTATION INC | 3396641 | 5 |
| #19 | HL MOTOR GROUP INC | 2274502 | 5 |
| #20 | SCHNEIDER NATIONAL BULK CARRIERS INC | 164311 | 5 |
| #21 | NEW PRIME INC | 3706 | 5 |
| #22 | IMPERATIVE CHEMICAL PARTNERS INC | 1796904 | 5 |
| #23 | NORCO INC | 62599 | 5 |
| #24 | SOLVENT DIRECT INC | 3355124 | 4 |
| #25 | CONTRACT TRANSPORTATION SYSTEMS CO | 188891 | 4 |
Recent Inspections
Latest inspections where 172.504(a) was cited • 1,399 total events • Page 1 of 56
Recent Inspections with 172.504(a)
Showing 25 of 1,399
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Oct 10, 2024 | 82894736 | WI | Level 1 | No |
| Oct 10, 2024 | 82889492 | TX | Level 1 | No |
| Oct 9, 2024 | 82900912 | TX | Level 2 | No |
| Oct 8, 2024 | 82862107 | SC | Level 2 | No |
| Oct 5, 2024 | 82842540 | AL | Level 2 | No |
| Oct 4, 2024 | 82890936 | OH | Level 1 | No |
| Oct 2, 2024 | 82830784 | CO | Level 2 | No |
| Oct 1, 2024 | 82805916 | IL | Level 2 | No |
| Sep 30, 2024 | 82817639 | TX | Level 1 | No |
| Sep 30, 2024 | 82827773 | TX | Level 2 | No |
| Sep 26, 2024 | 82771743 | CA | Level 2 | No |
| Sep 26, 2024 | 82777317 | MS | Level 1 | Yes |
| Sep 26, 2024 | 82761347 | CT | Level 2 | No |
| Sep 25, 2024 | 82770248 | CA | Level 1 | Yes |
| Sep 24, 2024 | 82799616 | NY | Level 2 | No |
| Sep 24, 2024 | 82758020 | MI | Level 2 | No |
| Sep 23, 2024 | 82750819 | CA | Level 2 | No |
| Sep 23, 2024 | 82759653 | TX | Level 1 | No |
| Sep 23, 2024 | 82755831 | LA | Level 2 | Yes |
| Sep 23, 2024 | 82745562 | NC | Level 1 | No |
| Sep 20, 2024 | 82749258 | TX | Level 2 | No |
| Sep 20, 2024 | 82769133 | TX | Level 2 | No |
| Sep 19, 2024 | 82721859 | CA | Level 2 | No |
| Sep 19, 2024 | 82733003 | LA | Level 2 | Yes |
| Sep 19, 2024 | 82703592 | AL | Level 2 | No |