TruckCodex

393.9A-LIL — Inoperable required lamps

FMCSA violation code under Vehicle Maintenance. 95,458 events recorded in roadside inspections. Severity weight: 3.

Severity Weight
3
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
95,458
Code
393.9A-LIL
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
3
Violation Group
—
Total Events
95,458
Carriers Cited
60,229

Violation Description

Operating a commercial motor vehicle with inoperable required lamps.

About This Violation Code

Code 393.9A-LIL falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 3 (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 393.9A in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
95,458
OOS Events
0
OOS Rate
0.0%
Top State (180d)
California
2,209 events

Top Enforcing States

Where 393.9A-LIL is most commonly cited (last 180 days)

1.California
2,209
OOS 0.0%
2.New York
2,071
OOS 0.0%
3.Florida
1,958
OOS 0.0%
4.Maryland
1,774
OOS 0.0%
5.US
1,631
OOS 0.0%
6.Arizona
1,301
OOS 0.0%
7.New Jersey
1,185
OOS 0.0%
8.Michigan
1,108
OOS 0.0%
9.Washington
1,025
OOS 0.0%
10.Georgia
1,009
OOS 0.0%
11.Alabama
949
OOS 0.0%
12.Missouri
911
OOS 0.0%
13.Wisconsin
910
OOS 0.0%
14.Pennsylvania
893
OOS 0.0%
15.Ohio
757
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 393.9A-LIL citations. Red bars mark months with OOS-triggering citations.

2,499
Apr
5,398
May
5,079
Jun
5,647
Jul
5,670
Aug
5,596
Sep
5,253
Oct
4,313
Nov
4,329
Dec
4,486
Jan
4,847
Feb
5,619
Mar
196
Apr

Most Active Stations

Inspection stations citing 393.9A-LIL most often (last 180 days)

1.NJ
671
OOS 0.0%
2.LAREDO TX
596
OOS 0.0%
3.BALTIMORE MD
252
OOS 0.0%
4.PA
218
OOS 0.0%
5.BROWNSVILLE TX
207
OOS 0.0%
6.NOGALES AZ
205
OOS 0.0%
7.PHOENIX AZ
186
OOS 0.0%
8.MONROE SCALE N/B
161
OOS 0.0%
9.PHARR TX
152
OOS 0.0%
10.FREDERICK MD
137
OOS 0.0%

Often Cited Together

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

393.9A-LCL3,186 co-occurrences396.17C-PI2,694 co-occurrences392.2-SLLSR2,001 co-occurrences393.9A-LSML1,969 co-occurrences393.9A-LLPL1,789 co-occurrences393.78A-WS1,311 co-occurrences393.75A3-TAOL1,275 co-occurrences393.9A-LRLI1,244 co-occurrences393.75C-TAOTD-LT2/321,061 co-occurrences393.9A-LTSI1,012 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 60,229 carriers total • Page 1 of 2410

Top Carriers with 393.9A-LIL Violations

Showing 25 of 60,229

fmcsa-violations
Top Carriers with 393.9A-LIL Violations
#CarrierUSDOT# Violations
#1WESTERN EXPRESS INC511412198
#2FEDERAL EXPRESS CORPORATION86876195
#3EVANS DELIVERY COMPANY INC38111140
#4SWIFT TRANSPORTATION CO OF ARIZONA LLC54283130
#5UNITED PARCEL SERVICE INC21800108
#6J B HUNT TRANSPORT INC80806107
#7JESUS PEDRO PEREZ CARRILLO115985181
#8TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V104190766
#9LIPSA TRANSPORTES SA DE CV258414465
#10OCTAVIO ANDRADE CORELLA55844065
#11JOSE LUIS ARMENTA GAXIOLA153155962
#12TRANSPORTES EMMA S DE RL DE CV66475660
#13GUILLERMO ESQUER GARCIA303689860
#14TRANSPORTES DE CARGA SAUL SALINAS SA DE CV55767658
#15TRANSPORTE INTERNACIONAL JONICK LOPEZ SA DE CV82098156
#16SCHNEIDER NATIONAL CARRIERS INC26418452
#17SERVICIOS RAPIDOS TREBOL SA DE CV82553550
#18WERNER ENTERPRISES INC5346746
#19RUBEN CARLOS TREVINO SANCHEZ164968945
#20VRP TRANSPORTES DE MEXICO S DE RL DE CV66205844
#21ESTES EXPRESS LINES12101843
#22JULIO CESAR CIENFUEGOS GARZA238956643
#23CENTRAL TRANSPORT LLC66117342
#24JOSE JUAN NIETO ESCOBAR302999341
#25JORGE ARMANDO PINEDA CERVANTES233927841

Recent Inspections

Latest inspections where 393.9A-LIL was cited • 95,458 total events • Page 1 of 3819

Recent Inspections with 393.9A-LIL

Showing 25 of 95,458

fmcsa-inspections
Recent Inspections with 393.9A-LIL
DateReport #StateLevelOOS
Apr 3, 202687485040USLevel 2No
Apr 3, 202687485011USLevel 2No
Apr 3, 202687485009PALevel 1No
Apr 3, 202687486871MILevel 2No
Apr 3, 202687485698MALevel 2No
Apr 3, 202687486888MILevel 2No
Apr 3, 202687485271ALLevel 2No
Apr 3, 202687485259MOLevel 2No
Apr 3, 202687486691OKLevel 2No
Apr 3, 202687485105USLevel 1No
Apr 3, 202687485681MALevel 2No
Apr 3, 202687485653MALevel 2No
Apr 3, 202687489412CALevel 2No
Apr 2, 202687486678OKLevel 2No
Apr 2, 202687474524ALLevel 1No
Apr 2, 202687474401SCLevel 2No
Apr 2, 202687485592LALevel 2No
Apr 2, 202687485562MOLevel 1No
Apr 2, 202687485355ARLevel 2No
Apr 2, 202687485247ORLevel 2No
Apr 2, 202687485042USLevel 1No
Apr 2, 202687471547CTLevel 2No
Apr 2, 202687484975VALevel 1No
Apr 2, 202687484839USLevel 1No
Apr 2, 202687484801FLLevel 1No

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