393.40 — Inadequate brakes
FMCSA violation code under Vehicle Maintenance. 457 events recorded in roadside inspections. Severity weight: 8. Out-of-service eligible.
Violation Description
Commercial motor vehicle equipped with brakes that are inadequate or fail to meet performance requirements.
About This Violation Code
Code 393.40 falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 8 (scale 1-10, higher = more severe). This violation is Out-of-Service eligible, meaning the driver or vehicle may be placed out of service at roadside when cited.
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 393.40 in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 393.40 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 393.40 citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 393.40 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 • 391 carriers total • Page 1 of 16
Top Carriers with 393.40 Violations
Showing 25 of 391
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | MORELLI LOGISTICS LLC | 3439211 | 6 |
| #2 | MTB LANDSCAPING LLC | 4104642 | 5 |
| #3 | TWIN PEAKS TREE SERVICE LLC | 2323809 | 5 |
| #4 | E RODNEY HOWELL INC | 2020404 | 4 |
| #5 | LOAD WOLVES TRANSPORT LLC | 3929687 | 4 |
| #6 | WATSON CONTRACTING | 2424639 | 4 |
| #7 | CAPPELLI PROPERTY SERVICES LLC | 3553096 | 4 |
| #8 | M & C TRANSPORT LLC | 3520766 | 4 |
| #9 | PRO CONSTRUCTION TEAM LLC | 1083989 | 4 |
| #10 | B&N TRANSPORTATION LLC | 3943508 | 4 |
| #11 | TINARI CONTRACTORS INC | 381998 | 4 |
| #12 | J A PROPERTY FENCING INC | 4173413 | 4 |
| #13 | LEGION LOGISTICS INC | 3625172 | 4 |
| #14 | MARYLAND TREE EXPERTS | 3304931 | 4 |
| #15 | ALEXANDER OCHOA | 4438003 | 2 |
| #16 | KASAK WORLD LOGISTICS INC | 3593618 | 2 |
| #17 | OHIO BULK TRANSFER COMPANY INC | 466040 | 2 |
| #18 | TESLA TRUCKING INC | 3086627 | 2 |
| #19 | BDJ TRUCKING CO | 1331321 | 2 |
| #20 | RIO BRAVO-GREELEY UNION SCHOOL DISTRICT | 2653419 | 2 |
| #21 | EAGLE WINGS EXPRESS INC | 2951574 | 2 |
| #22 | NCCL ENTERPRISES LLC | 3276045 | 2 |
| #23 | BEYOND THE LEAF TREE AND SHRUB EXPERT LLC | 2342319 | 2 |
| #24 | EL PASO ROLL-OFF SERVICES LLC | 3733801 | 2 |
| #25 | BARTLEBAUGH AMUSEMENTS INC | 2130790 | 2 |
Recent Inspections
Latest inspections where 393.40 was cited • 457 total events • Page 1 of 19
Recent Inspections with 393.40
Showing 25 of 457
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Mar 8, 2026 | 87242412 | NC | Level 1 | No |
| Feb 24, 2026 | 87139467 | IL | Level 1 | No |
| Jan 21, 2026 | 86907120 | TX | Level 1 | No |
| Jan 19, 2026 | 86907153 | TX | Level 2 | Yes |
| Nov 20, 2025 | 86405727 | TX | Level 1 | Yes |
| Aug 18, 2025 | 85555913 | IL | Level 4 | No |
| Aug 6, 2025 | 85432207 | PA | Level 1 | No |
| Jul 28, 2025 | 85362706 | PA | Level 1 | Yes |
| Jul 23, 2025 | 85374168 | TX | Level 1 | Yes |
| Jul 21, 2025 | 85384069 | TX | Level 1 | No |
| Jul 12, 2025 | 85469541 | MS | Level 1 | No |
| Jul 8, 2025 | 85169572 | TX | Level 1 | Yes |
| Jul 3, 2025 | 85181339 | TX | Level 2 | Yes |
| Jul 1, 2025 | 85139685 | IA | Level 1 | No |
| Jun 30, 2025 | 85102666 | PA | Level 1 | Yes |
| Jun 27, 2025 | 85092561 | PA | Level 1 | No |
| Jun 16, 2025 | 84976301 | PA | Level 1 | Yes |
| Jun 10, 2025 | 84923010 | MS | Level 1 | No |
| May 30, 2025 | 84824016 | KY | Level 1 | No |
| May 28, 2025 | 84814589 | PA | Level 1 | No |
| May 24, 2025 | 84786232 | IA | Level 1 | No |
| May 14, 2025 | 84731198 | TX | Level 2 | Yes |
| May 5, 2025 | 84591304 | KY | Level 1 | Yes |
| May 1, 2025 | 84593282 | TX | Level 1 | Yes |
| Apr 16, 2025 | 84431253 | PA | Level 1 | No |