393.9B-LSLO — Lighting - Stop lamps - Any obscured
FMCSA violation code under Vehicle Maintenance. 638 events recorded in roadside inspections. Severity weight: N/A.
Violation Description
Lighting - Stop lamps - Any obscured
About This Violation Code
Code 393.9B-LSLO falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS).
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 393.9B in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 393.9B-LSLO 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 393.9B-LSLO citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 393.9B-LSLO 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 • 611 carriers total • Page 1 of 25
Top Carriers with 393.9B-LSLO Violations
Showing 25 of 611
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | AUTO HAUL EXPRESS LLC | 4329325 | 4 |
| #2 | HUGILL SANITATION INC | 2114510 | 3 |
| #3 | WASTE MANAGEMENT OF PENNSYLVANIA INC | 344050 | 3 |
| #4 | AKA FS LLC | 3899976 | 2 |
| #5 | SAKARA LLC | 4429530 | 2 |
| #6 | ASV XPRESS LLC | 4389301 | 2 |
| #7 | FEDERAL EXPRESS CORPORATION | 86876 | 2 |
| #8 | LADA TRANS INC | 2998381 | 2 |
| #9 | GTR EXPRESS LLC | 4252559 | 2 |
| #10 | BM 5 EXPRESS LLC | 4252114 | 2 |
| #11 | NEW PRIME INC | 3706 | 2 |
| #12 | CRST EXPEDITED INC | 53773 | 2 |
| #13 | CREACH GREENHOUSE INC | 717941 | 2 |
| #14 | CARRIER ONE INC | 1102122 | 2 |
| #15 | TIGER LINES LLC | 80289 | 2 |
| #16 | RIVERCITY LOGISTICS LTD | 3652295 | 2 |
| #17 | EVERGRO COOPERATIVE | 2450546 | 2 |
| #18 | KEVIN J TORREY | 3136657 | 2 |
| #19 | CORTEN INDUSTRIES INC | 3153092 | 2 |
| #20 | WTI TRANSPORT LLC | 389263 | 2 |
| #21 | BUMBLE TRUCK LLC | 4475014 | 2 |
| #22 | J B HUNT TRANSPORT INC | 80806 | 2 |
| #23 | FIRST CLASS AUTO SALVAGE INC | 2069438 | 2 |
| #24 | FORWARD TIME TRANSPORT LLC | 3109326 | 1 |
| #25 | DONNY AND PIPPO LOGISTIC INC | 2827735 | 1 |
Recent Inspections
Latest inspections where 393.9B-LSLO was cited • 638 total events • Page 1 of 26
Recent Inspections with 393.9B-LSLO
Showing 25 of 638
| Date | Report # | State | Level | OOS |
|---|---|---|---|---|
| Mar 31, 2026 | 87456539 | KS | Level 1 | No |
| Mar 31, 2026 | 87474770 | GA | Level 2 | No |
| Mar 30, 2026 | 87454825 | AZ | Level 2 | No |
| Mar 30, 2026 | 87452248 | KY | Level 2 | No |
| Mar 28, 2026 | 87440636 | NE | Level 1 | No |
| Mar 25, 2026 | 87455131 | MN | Level 1 | No |
| Mar 25, 2026 | 87458958 | MD | Level 2 | No |
| Mar 25, 2026 | 87427174 | VA | Level 2 | No |
| Mar 25, 2026 | 87404943 | VA | Level 2 | No |
| Mar 20, 2026 | 87377130 | CA | Level 2 | No |
| Mar 20, 2026 | 87351561 | CO | Level 2 | No |
| Mar 19, 2026 | 87348740 | AZ | Level 2 | No |
| Mar 17, 2026 | 87321041 | ID | Level 2 | No |
| Mar 17, 2026 | 87331897 | MO | Level 1 | No |
| Mar 17, 2026 | 87338182 | GA | Level 1 | No |
| Mar 12, 2026 | 87305315 | CA | Level 1 | No |
| Mar 12, 2026 | 87286159 | CA | Level 1 | No |
| Mar 12, 2026 | 87282472 | SC | Level 2 | No |
| Mar 11, 2026 | 87274139 | MS | Level 3 | No |
| Mar 10, 2026 | 87289874 | NY | Level 2 | No |
| Mar 9, 2026 | 87248749 | US | Level 1 | No |
| Mar 9, 2026 | 87291345 | NV | Level 2 | No |
| Mar 9, 2026 | 87241258 | US | Level 2 | No |
| Mar 9, 2026 | 87259110 | TN | Level 2 | No |
| Mar 5, 2026 | 87233565 | AZ | Level 1 | No |