387.303B4 — 387.303B4
FMCSA violation code under General/Admin. 1,646 events recorded in roadside inspections. Severity weight: N/A.
About This Violation Code
Code 387.303B4 falls under the General/Admin BASIC category in FMCSA's Safety Measurement System (SMS).
When this violation is cited during a roadside inspection, it contributes to the carrier's General/Admin 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 387.303B4 in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 387.303B4 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 387.303B4 citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 387.303B4 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 • 1,360 carriers total • Page 1 of 55
Top Carriers with 387.303B4 Violations
Showing 25 of 1,360
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | US XPRESS INC | 303024 | 6 |
| #2 | SERVICIOS ESPECIALIZADOS ALANIS SA DE CV | 559477 | 6 |
| #3 | FEDERAL EXPRESS CORPORATION | 86876 | 6 |
| #4 | ATEY TRUCKING LLC | 4409682 | 6 |
| #5 | SWIFT TRANSPORTATION CO OF ARIZONA LLC | 54283 | 5 |
| #6 | SANDRA PATRICIA CASANOVA GUILLEN | 925581 | 5 |
| #7 | FANTASMA COMPANY TRUCKING | 2721592 | 5 |
| #8 | WESTERN EXPRESS INC | 511412 | 5 |
| #9 | EDITH ZULEMA LOPEZ DE BUSTILLO | 2457980 | 5 |
| #10 | TRAREYSA SA DE CV | 2412786 | 4 |
| #11 | MANEJO DE ACTIVOS EN TRANSFERENCIA S DE RL DE CV | 4410284 | 4 |
| #12 | LUCIO VALENZUELA ZAMORA | 3862346 | 4 |
| #13 | CENTEX SHED CO LLC | 4241652 | 4 |
| #14 | J B HUNT TRANSPORT INC | 80806 | 4 |
| #15 | DJV TRANSPORT LLC | 3973827 | 4 |
| #16 | DROVER LOGISTICS LLC | 4053872 | 4 |
| #17 | JBV HAULING LLC | 4470923 | 3 |
| #18 | NCI GROUP INC | 251898 | 3 |
| #19 | FRANK BARTEL TRANSPORTATION INC | 876456 | 3 |
| #20 | JUAN ENRIQUE ORTEGA MARQUEZ | 3973108 | 3 |
| #21 | J & J HERNANDEZ TRANSPORT LLC | 4270812 | 3 |
| #22 | NESTOR GONZALEZ QUINONES | 3275507 | 3 |
| #23 | IVAN JESUS RUIZ HERNANDEZ | 3174806 | 3 |
| #24 | QUALITY TANK SA DE CV | 2864600 | 3 |
| #25 | TRANSPORTES NUEVO AMANECER S DE RL DE CV | 1435452 | 3 |
Recent Inspections
Latest inspections where 387.303B4 was cited • 1,646 total events • Page 1 of 66
Recent Inspections with 387.303B4
Showing 25 of 1,646
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Apr 1, 2026 | 87477626 | IL | Level 3 | No |
| Apr 1, 2026 | 87487298 | TX | Level 2 | No |
| Apr 1, 2026 | 87487803 | TX | Level 2 | No |
| Mar 30, 2026 | 87468197 | TX | Level 2 | No |
| Mar 30, 2026 | 87479430 | TX | Level 1 | No |
| Mar 30, 2026 | 87468535 | TX | Level 2 | No |
| Mar 28, 2026 | 87479800 | TX | Level 1 | No |
| Mar 28, 2026 | 87478887 | TX | Level 1 | No |
| Mar 26, 2026 | 87466625 | TX | Level 1 | No |
| Mar 26, 2026 | 87466821 | TX | Level 1 | No |
| Mar 25, 2026 | 87467345 | TX | Level 2 | No |
| Mar 25, 2026 | 87394579 | KY | Level 2 | No |
| Mar 25, 2026 | 87468342 | TX | Level 1 | No |
| Mar 25, 2026 | 87468157 | TX | Level 1 | No |
| Mar 25, 2026 | 87467704 | TX | Level 3 | No |
| Mar 25, 2026 | 87466353 | TX | Level 3 | No |
| Mar 25, 2026 | 87442564 | TX | Level 1 | No |
| Mar 24, 2026 | 87467232 | TX | Level 2 | No |
| Mar 24, 2026 | 87466510 | TX | Level 2 | No |
| Mar 24, 2026 | 87442553 | TX | Level 1 | No |
| Mar 24, 2026 | 87423540 | TX | Level 3 | No |
| Mar 24, 2026 | 87423175 | TX | Level 1 | No |
| Mar 23, 2026 | 87383859 | NC | Level 3 | No |
| Mar 23, 2026 | 87488035 | TX | Level 2 | No |
| Mar 23, 2026 | 87467457 | TX | Level 3 | No |