172.504B-HMPS — Placarding - table 1 materials
FMCSA violation code under Hazardous Materials. 57 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 172.504B-HMPS 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 172.504B in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 172.504B-HMPS 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 172.504B-HMPS citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 172.504B-HMPS 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 • 50 carriers total • Page 1 of 2
Top Carriers with 172.504B-HMPS Violations
Showing 25 of 50
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | SCHNEIDER NATIONAL CARRIERS INC | 264184 | 3 |
| #2 | OAP TRANSPORTATION LLC | 222024 | 3 |
| #3 | CENTRAL TRANSPORT LLC | 661173 | 3 |
| #4 | AUTOZONE TEXAS LLC | 288323 | 2 |
| #5 | SILVICOM INC | 1864495 | 1 |
| #6 | CARDINAL LOGISTICS MANAGEMENT CORPORATION | 191496 | 1 |
| #7 | AWI DELIVERY SERVICES LLC | 292905 | 1 |
| #8 | WERNER ENTERPRISES INC | 53467 | 1 |
| #9 | EMERALD ENVIRONMENTAL SERVICES INC | 837896 | 1 |
| #10 | THE PENNOHIO CORPORATION | 695266 | 1 |
| #11 | NOVATECH WOOD PROTECTION INC | 3436035 | 1 |
| #12 | APPROVED STORAGE & WASTE HAULING II INC | 3109273 | 1 |
| #13 | PROGRESSIVE COMMERCIAL AQUATICS LLC | 1940762 | 1 |
| #14 | KORNEL TRANSPORT INC | 3276715 | 1 |
| #15 | AMERICAN TEXTILE SYSTEMS | 2103670 | 1 |
| #16 | TRIPLE J TRANSPORT LLC | 777401 | 1 |
| #17 | AERO LOGISTICS LLC | 904925 | 1 |
| #18 | KEY WEST CHEMICAL & PAPER SUPPLY INC | 1407579 | 1 |
| #19 | ANG TRANSPORTATION LLC | 2800846 | 1 |
| #20 | AMERICAN PROMOTIONAL EVENTS INC-WEST COAST | 564520 | 1 |
| #21 | AVERITT EXPRESS INC | 36684 | 1 |
| #22 | ALL PURE POOL SERVICE LLC | 2754185 | 1 |
| #23 | MASTER ENVIRONMENTAL INC | 1597214 | 1 |
| #24 | TRIANGLE CHEMICAL CO | 111262 | 1 |
| #25 | J B HUNT TRANSPORT INC | 80806 | 1 |
Recent Inspections
Latest inspections where 172.504B-HMPS was cited • 57 total events • Page 1 of 3
Recent Inspections with 172.504B-HMPS
Showing 25 of 57
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Mar 23, 2026 | 87388482 | OH | Level 2 | No |
| Mar 19, 2026 | 87377491 | WA | Level 1 | No |
| Mar 18, 2026 | 87321080 | SD | Level 2 | No |
| Mar 4, 2026 | 87226666 | PA | Level 2 | No |
| Mar 4, 2026 | 87221185 | TN | Level 2 | No |
| Feb 20, 2026 | 87229484 | CA | Level 1 | No |
| Jan 15, 2026 | 86829776 | SC | Level 2 | No |
| Jan 8, 2026 | 86754235 | CA | Level 2 | No |
| Dec 22, 2025 | 86645240 | CA | Level 3 | Yes |
| Dec 3, 2025 | 86513877 | NY | Level 2 | No |
| Dec 2, 2025 | 86460645 | MI | Level 2 | No |
| Nov 20, 2025 | 86388618 | CA | Level 2 | No |
| Nov 5, 2025 | 86275013 | GA | Level 1 | No |
| Oct 30, 2025 | 86206907 | MS | Level 2 | No |
| Oct 20, 2025 | 86134453 | GA | Level 1 | No |
| Oct 15, 2025 | 86076466 | OH | Level 1 | No |
| Sep 13, 2025 | 85779370 | KS | Level 2 | No |
| Sep 8, 2025 | 85729924 | OH | Level 2 | No |
| Sep 3, 2025 | 85719643 | MT | Level 2 | No |
| Aug 30, 2025 | 85676111 | CA | Level 2 | No |
| Aug 24, 2025 | 85579760 | AL | Level 2 | No |
| Aug 13, 2025 | 85486486 | CA | Level 2 | No |
| Aug 4, 2025 | 85437714 | FL | Level 2 | No |
| Jul 31, 2025 | 85388091 | TN | Level 1 | No |
| Jul 31, 2025 | 85381472 | ME | Level 3 | No |