TruckCodex

393.9B-LFTSO — Lighting - Front - Turn signal - obscured

FMCSA violation code under Vehicle Maintenance. 392 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
392
Code
393.9B-LFTSO
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
392
Carriers Cited
368

Violation Description

Lighting - Front - Turn signal - obscured

About This Violation Code

Code 393.9B-LFTSO 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.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
392
OOS Events
2
OOS Rate
0.5%
Top State (180d)
California
29 events

Top Enforcing States

Where 393.9B-LFTSO is most commonly cited (last 180 days)

1.California
29
OOS 0.0%
2.US
8
OOS 0.0%
3.Georgia
5
OOS 0.0%
4.New Jersey
5
OOS 0.0%
5.Pennsylvania
4
OOS 0.0%
6.Missouri
3
OOS 0.0%
7.Colorado
3
OOS 0.0%
8.Florida
3
OOS 0.0%
9.Montana
3
OOS 0.0%
10.Maryland
2
OOS 0.0%
11.Michigan
2
OOS 0.0%
12.Arizona
2
OOS 0.0%
13.North Dakota
2
OOS 0.0%
14.Kansas
2
OOS 0.0%
15.Puerto Rico
1
OOS 0.0%

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-LFTSO citations. Red bars mark months with OOS-triggering citations.

10
Apr
26
May
22
Jun
20
Jul
32
Aug
20
Sep
19
Oct
14
Nov
20
Dec
13
Jan
9
Feb
17
Mar
1
Apr

Most Active Stations

Inspection stations citing 393.9B-LFTSO most often (last 180 days)

1.SB SANTA NELLA PLATFORM SCALES
10
OOS 0.0%
2.NOGALES AZ
3
OOS 0.0%
3.CORDELIA IF
3
OOS 0.0%
4.KNOWLTON SCALES
2
OOS 0.0%
5.MONUMENT CO
2
OOS 0.0%
6.LAREDO TX
2
OOS 0.0%
7.DESERT HILLS IF
2
OOS 0.0%
8.BUFORD GA
2
OOS 0.0%
9.S/B SR-99 JNO CALIFORNIA AVE
2
OOS 0.0%
10.CALEXICO IF
1
OOS 0.0%

Often Cited Together

Other violations commonly found on the same inspection (last 90 days)

393.45B2-B-AIR24 co-occurrences392.2-SLLSR13 co-occurrences393.47E12 co-occurrences392.2-SLLEQP11 co-occurrences395.30B1-ELDDFR9 co-occurrences396.9D2-FTF7 co-occurrences393.9A-LIL7 co-occurrences396.17C-PI7 co-occurrences393.45B2-B-VAC6 co-occurrences393.9A-LLPL6 co-occurrences

Citation patterns suggest related root causes (e.g., HOS violations paired with logbook errors).

Top Carriers Cited

Ranked by frequency • 368 carriers total • Page 1 of 15

Top Carriers with 393.9B-LFTSO Violations

Showing 25 of 368

fmcsa-violations
Top Carriers with 393.9B-LFTSO Violations
#CarrierUSDOT# Violations
#1JESUS MA VALDEZ GARCIA25347843
#2LT DELIVERY INC5746933
#3RICHARD ALAN OWENS JR20090443
#4HUMMING BIRD TRANSPORTATION LLC34690592
#5MMM-EXPRESS XPD LLC24588092
#6TOWER TRUCK LINES INC13319012
#7BEST WORKER GROUP INC31363542
#8DARLING INGREDIENTS INC4713182
#9TYCSO SA DE CV38881362
#10BAXLEY'S ENTERPRISES INC7002522
#11BS 147 INC37231202
#12NANO TRUCKING LLC36565172
#13MSV CORPORATION36931702
#14GJD MASONRY AND PAVER40868712
#15RICARDO CARDENAS GARCIA33560792
#16PITT OHIO EXPRESS LLC1901802
#17MCCARTHY TOWING INC13806592
#18CARLOS GUADALUPE GARCIA GARCIA19162452
#19HOME BUILDERS SITE SERVICES OF ARIZONA19719022
#20GILBERTO CARRANZA-GOMEZ7868402
#21JESUS DAVID BALDERRAMA FIGUEROA29489942
#22K2D CAPITAL INC25733921
#23RYAN'S EXPRESS FREIGHT INCORPORATED14236181
#24MINOT BUILDERS SUPPLY ASSOCIATION352111
#25LRMT LOGISTICS CORP40804271

Recent Inspections

Latest inspections where 393.9B-LFTSO was cited • 392 total events • Page 1 of 16

Recent Inspections with 393.9B-LFTSO

Showing 25 of 392

fmcsa-inspections
Recent Inspections with 393.9B-LFTSO
DateReport #StateLevelOOS
Apr 2, 202687480134CALevel 1No
Mar 26, 202687476510MDLevel 2No
Mar 26, 202687469417CALevel 1No
Mar 26, 202687426477COLevel 1No
Mar 20, 202687376966CALevel 2No
Mar 17, 202687327749FLLevel 2No
Mar 17, 202687338182GALevel 1No
Mar 11, 202687280802PALevel 1No
Mar 10, 202687272444ARLevel 2No
Mar 10, 202687284233MILevel 2No
Mar 9, 202687255995CALevel 2No
Mar 9, 202687245898MTLevel 2No
Mar 5, 202687227068PALevel 2No
Mar 4, 202687207056CALevel 2No
Mar 4, 202687219418CALevel 2No
Mar 4, 202687219442CALevel 2No
Mar 2, 202687202412MSLevel 1Yes
Feb 27, 202687220602MNLevel 1No
Feb 25, 202687142633CALevel 1No
Feb 25, 202687162476MOLevel 1No
Feb 18, 202687092174CALevel 2No
Feb 13, 202687045821CALevel 2No
Feb 12, 202687028166MTLevel 2No
Feb 11, 202687021680CALevel 2No
Feb 11, 202687075718MDLevel 2No

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Unknown freshness
Federal Motor Carrier Safety Regulations (49 CFR)
Unknown freshness

Related records

CategoryAll Vehicle Maintenance Violations
Browse all violation codes in the Vehicle Maintenance BASIC
IndexAll Violation Codes
FMCSR violation codes by BASIC category
ReferenceFMCSA Roadside Inspections
Inspection levels and procedures
ToolSearch Carriers
Look up carriers by USDOT, name, or VIN