TruckCodex

393.9A-LPL — Inoperable required lamps

FMCSA violation code under Vehicle Maintenance. 2,422 events recorded in roadside inspections. Severity weight: 3.

Severity Weight
3
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
2,422
Code
393.9A-LPL
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
3
Violation Group
—
Total Events
2,422
Carriers Cited
2,187

Violation Description

Operating a commercial motor vehicle with inoperable required lamps.

About This Violation Code

Code 393.9A-LPL 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)
2,422
OOS Events
2
OOS Rate
0.1%
Top State (180d)
US
80 events

Top Enforcing States

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

1.US
80
OOS 0.0%
2.New York
62
OOS 0.0%
3.Pennsylvania
54
OOS 0.0%
4.Arizona
43
OOS 0.0%
5.Kentucky
37
OOS 0.0%
6.Alabama
35
OOS 0.0%
7.Connecticut
33
OOS 0.0%
8.California
32
OOS 0.0%
9.Ohio
28
OOS 0.0%
10.New Jersey
21
OOS 0.0%
11.Minnesota
17
OOS 0.0%
12.Georgia
16
OOS 0.0%
13.Maryland
14
OOS 0.0%
14.Oklahoma
13
OOS 0.0%
15.Washington
13
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-LPL citations. Red bars mark months with OOS-triggering citations.

63
Apr
136
May
137
Jun
156
Jul
147
Aug
138
Sep
131
Oct
86
Nov
120
Dec
105
Jan
140
Feb
110
Mar
3
Apr

Most Active Stations

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

1.LAREDO TX
52
OOS 0.0%
2.PHOENIX AZ
19
OOS 0.0%
3.NJ
18
OOS 0.0%
4.PA
17
OOS 0.0%
5.GREENWICH SCALE
11
OOS 0.0%
6.DANBURY SCALE
10
OOS 0.0%
7.PERU NY
9
OOS 0.0%
8.LOUISVILLE
8
OOS 0.0%
9.LONDON
6
OOS 0.0%
10.CLARKS GROVE MN
6
OOS 0.0%

Often Cited Together

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

396.17C-PI71 co-occurrences393.9A-LFTSI58 co-occurrences393.9A-LIL57 co-occurrences393.75A3-TAOL50 co-occurrences392.2-SLLSR50 co-occurrences393.9A-LCL37 co-occurrences393.9A-LSLI37 co-occurrences393.45B2-B-AIR36 co-occurrences393.78A-WS36 co-occurrences393.9A-LSML35 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 2,187 carriers total • Page 1 of 88

Top Carriers with 393.9A-LPL Violations

Showing 25 of 2,187

fmcsa-violations
Top Carriers with 393.9A-LPL Violations
#CarrierUSDOT# Violations
#1RIO BRAVO TRUCKING SA DE CV10997278
#2WESTERN EXPRESS INC5114126
#3JULIO CESAR CIENFUEGOS GARZA23895666
#4SOLITAIRE TRUCKING S DE RL DE CV24629965
#5JUAN ROBERTO MARTINEZ MADRIGAL28572634
#6INTER MEXICANA DE TRANSPORTE SA DE CV17164154
#7MILAN EXPEDITED SERVICES SA DE CV37211214
#8SWIFT TRANSPORTATION CO OF ARIZONA LLC542834
#9UNITED PARCEL SERVICE INC218004
#10ROSA ERIKA GALVAN MACIAS17415844
#11MIGUEL ANGEL VILLEGAS ROJAS23962844
#12MOVENTUM TRANSFER SA DE CV36302794
#13HUGO EDUVILIO AYALA ORTEGA24150254
#14SERVICIOS RAPIDOS TREBOL SA DE CV8255354
#15FIRST STUDENT INC3544063
#16PINGVIN EXPRESS LLC43352573
#17AUTOTRANSPORTES GAMI SA DE CV40048153
#18CJI ENLACES TERRESTRES SA DE CV20742113
#19MARIO R GRIJALVA8370443
#20JORGE ALEJANDRO ESPINOZA FAVELA40586613
#21MR BULT'S INC3871023
#22KORAIMA EVELYN GRIJALVA DE LA ROSA37479343
#23GRUPO COMERCIAL CM SA DE CV21845543
#24DGR EXCAVATING LLC32617063
#25Q TRANSPORTES SA DE CV27951123

Recent Inspections

Latest inspections where 393.9A-LPL was cited • 2,422 total events • Page 1 of 97

Recent Inspections with 393.9A-LPL

Showing 25 of 2,422

fmcsa-inspections
Recent Inspections with 393.9A-LPL
DateReport #StateLevelOOS
Apr 2, 202687476224ALLevel 2No
Apr 1, 202687458973ALLevel 2No
Apr 1, 202687459551KYLevel 2No
Mar 31, 202687445800CTLevel 1No
Mar 31, 202687473814PALevel 1No
Mar 31, 202687473946AZLevel 2No
Mar 30, 202687456342COLevel 1No
Mar 30, 202687457283VALevel 2No
Mar 30, 202687432972CTLevel 1No
Mar 30, 202687437648USLevel 1No
Mar 30, 202687455996OHLevel 1No
Mar 28, 202687437485USLevel 1No
Mar 28, 202687484701NYLevel 2No
Mar 28, 202687471664NYLevel 1No
Mar 28, 202687434618AZLevel 2No
Mar 27, 202687437480USLevel 1No
Mar 27, 202687418694KYLevel 1No
Mar 27, 202687438392MELevel 2No
Mar 27, 202687430968TNLevel 2No
Mar 26, 202687404995PALevel 2No
Mar 26, 202687471790NYLevel 2No
Mar 26, 202687435420NYLevel 2No
Mar 26, 202687428212AZLevel 2No
Mar 26, 202687417554INLevel 1No
Mar 25, 202687422737PALevel 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
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