172.336B — ID Numbers not properly displayed other than on placards
FMCSA violation code under Hazardous Materials. 14 events recorded in roadside inspections. Severity weight: N/A.
Violation Description
ID Numbers not properly displayed other than on placards
About This Violation Code
Code 172.336B 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 172.336B in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 172.336B 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 172.336B citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 172.336B most often (last 180 days)
Top Carriers Cited
Ranked by frequency • 14 carriers total
Top Carriers with 172.336B Violations
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | KAREN YISELL PAZ SALINAS | 3536809 | 1 |
| #2 | HECTOR TREVINO MARTINEZ | 3256078 | 1 |
| #3 | RYDER SUPPLY CHAIN SOLUTIONS CANADA ULC | 919057 | 1 |
| #4 | ENERGY SERVICES GROUP INC | 647380 | 1 |
| #5 | WHEAT ENERGY SERVICES INC | 584180 | 1 |
| #6 | MBI CONSTRUCTION INC | 1372869 | 1 |
| #7 | UZB FREIGHT INC | 2960200 | 1 |
| #8 | CALIFORNIA CARGO LLC | 3322940 | 1 |
| #9 | UNITED PETROLEUM TRANSPORTS INC | 185040 | 1 |
| #10 | STATE WIDE TRANS INC | 2524661 | 1 |
| #11 | R L C TRUCKING LLC | 1964323 | 1 |
| #12 | XPRESS INTERNACIONAL S DE RL DE CV | 1598663 | 1 |
| #13 | RELIANT FIELD SERVICES INC | 2141287 | 1 |
| #14 | SPEED INTERMODAL | 2418540 | 1 |
Recent Inspections
Latest inspections where 172.336B was cited • 14 total events
Recent Inspections with 172.336B
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Mar 13, 2026 | 87323792 | TX | Level 1 | No |
| Jan 5, 2026 | 86729206 | TX | Level 2 | No |
| Oct 28, 2025 | 86225596 | TX | Level 1 | No |
| Oct 15, 2025 | 86120820 | TX | Level 1 | Yes |
| Aug 28, 2025 | 85656819 | TX | Level 2 | No |
| May 15, 2025 | 84698020 | NM | Level 2 | No |
| Apr 28, 2025 | 84523439 | TX | Level 2 | No |
| Mar 26, 2025 | 84296700 | TX | Level 2 | No |
| Feb 25, 2025 | 83973823 | TX | Level 2 | Yes |
| Jan 16, 2025 | 83638409 | IL | Level 3 | No |
| Dec 4, 2024 | 83317371 | IL | Level 2 | No |
| Oct 31, 2024 | 83074703 | TX | Level 2 | Yes |
| Dec 23, 2023 | 80482215 | TX | Level 2 | Yes |
| Dec 5, 2023 | 80360568 | TX | Level 2 | Yes |