393.47(b) — Brake actuators/chambers defective
FMCSA violation code under Vehicle Maintenance. 3,181 events recorded in roadside inspections. Severity weight: 7.
Violation Description
Brake actuators, chambers, or other brake components are defective or not functioning properly.
About This Violation Code
Code 393.47(b) falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 7 (scale 1-10, higher = more severe).
When this violation is cited during a roadside inspection, it contributes to the carrier's Vehicle Maintenance 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 393.47 in the Federal Motor Carrier Safety Regulations.
Top Carriers Cited
Ranked by frequency • 2,852 carriers total • Page 1 of 115
Top Carriers with 393.47(b) Violations
Showing 25 of 2,852
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | TRANSPORTES AGUILA DE CIUDAD JUAREZ SA DE CV | 555365 | 8 |
| #2 | EVANS DELIVERY COMPANY INC | 38111 | 8 |
| #3 | TEXAS INTERNATIONAL ENTERPRISES INC | 2196912 | 7 |
| #4 | JP TRANSLOG CORP | 3450013 | 5 |
| #5 | HUNG TRANSPORTATION LLC | 2866904 | 5 |
| #6 | 1 STUNT LLC | 3990506 | 4 |
| #7 | GL EXPRESS TRANSPORT LLC | 3642449 | 4 |
| #8 | GONZALEZ TRUCKING LLC | 1090514 | 4 |
| #9 | JULIO CESAR CIENFUEGOS GARZA | 2389566 | 4 |
| #10 | J & J HERNANDEZ INC | 1929976 | 4 |
| #11 | OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV | 683428 | 4 |
| #12 | SISU ENERGY LLC | 3328258 | 4 |
| #13 | ROBERTSON'S TRANSPORT LTD A CALIFORNIA LP | 658075 | 4 |
| #14 | FLETES INTERNACIONALES DE COSS SA DE CV | 742397 | 3 |
| #15 | RAUL CASTRO LEMUS | 3363274 | 3 |
| #16 | TRANSPORTES ZUAZUA LLC | 1838226 | 3 |
| #17 | GILBERTO CARRANZA-GOMEZ | 786840 | 3 |
| #18 | PELICANS BROTHERS LLC | 3212658 | 3 |
| #19 | FREIGHT DISPATCH SERVICE INC | 2955454 | 3 |
| #20 | NATIONAL DRAYAGE SERVICES DE LLC | 1747093 | 3 |
| #21 | LORAS TRUCKING INC | 2109235 | 3 |
| #22 | JUAN RAMON GONZALEZ AND BILLY PAUL RAMIREZ | 800673 | 3 |
| #23 | Q TRANSPORTES SA DE CV | 2795112 | 3 |
| #24 | KINGAR TRANSPORT SA DE CV | 3642882 | 3 |
| #25 | JORGE HERNANDEZ CABRERA | 3277916 | 3 |
Recent Inspections
Latest inspections where 393.47(b) was cited • 3,181 total events • Page 1 of 128
Recent Inspections with 393.47(b)
Showing 25 of 3,181
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Oct 15, 2024 | 82907925 | UT | Level 1 | Yes |
| Oct 15, 2024 | 82908038 | SC | Level 1 | Yes |
| Oct 15, 2024 | 82907803 | US | Level 1 | No |
| Oct 14, 2024 | 82913380 | CA | Level 5 | Yes |
| Oct 14, 2024 | 82908976 | MD | Level 1 | Yes |
| Oct 13, 2024 | 82895744 | US | Level 1 | Yes |
| Oct 11, 2024 | 82895607 | US | Level 1 | No |
| Oct 11, 2024 | 82899805 | IA | Level 1 | Yes |
| Oct 11, 2024 | 82897473 | US | Level 1 | Yes |
| Oct 11, 2024 | 82900135 | MI | Level 2 | Yes |
| Oct 11, 2024 | 82902882 | CA | Level 1 | No |
| Oct 11, 2024 | 82912387 | TX | Level 1 | No |
| Oct 11, 2024 | 82913683 | CA | Level 1 | Yes |
| Oct 10, 2024 | 82900446 | TX | Level 2 | Yes |
| Oct 10, 2024 | 82913067 | TX | Level 1 | Yes |
| Oct 10, 2024 | 82880434 | MI | Level 1 | Yes |
| Oct 10, 2024 | 82912383 | TX | Level 2 | No |
| Oct 10, 2024 | 82894708 | OH | Level 1 | Yes |
| Oct 10, 2024 | 82914426 | CA | Level 1 | Yes |
| Oct 10, 2024 | 82894595 | OH | Level 1 | Yes |
| Oct 10, 2024 | 82914209 | CA | Level 1 | Yes |
| Oct 10, 2024 | 82876720 | US | Level 1 | No |
| Oct 9, 2024 | 82889266 | TX | Level 2 | Yes |
| Oct 9, 2024 | 82881292 | TX | Level 2 | Yes |
| Oct 9, 2024 | 82867542 | KY | Level 1 | Yes |