TruckCodex

393.23 — Required lamp not powered by vehicle electric

FMCSA violation code under Vehicle Maintenance. 5,781 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
5,781
Code
393.23
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
5,781
Carriers Cited
4,807

Violation Description

Required lamp not powered by vehicle electric

About This Violation Code

Code 393.23 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 393.23 in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
5,781
OOS Events
4,951
OOS Rate
85.6%
Top State (180d)
Texas
26 events

Top Enforcing States

Where 393.23 is most commonly cited (last 180 days)

1.Texas
26
OOS 50.0%
2.North Carolina
4
OOS 50.0%
3.Iowa
2
OOS 50.0%
4.New Mexico
2
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 393.23 citations. Red bars mark months with OOS-triggering citations.

1
Apr
4
May
10
Jul
7
Aug
2
Sep
4
Oct
7
Nov
11
Dec
6
Jan
5
Feb
4
Mar

Most Active Stations

Inspection stations citing 393.23 most often (last 180 days)

1.GALLUP PORT OF ENTRY
2
OOS 0.0%
2.I 40 EAST REST AREA
1
OOS 0.0%
3.I 40 WEST AT MUDDY CREEK
1
OOS 0.0%
4.I 40 WEST AT US 601
1
OOS 100.0%
5.HERTFORD WEIGH STATION, HWY 17
1
OOS 100.0%
6.2850 TX351
1
OOS 0.0%
7.392M IH35E NB
1
OOS 100.0%
8.4043 TX351
1
OOS 100.0%
9.IH-0030 IN DALLAS CO. (32-64)
1
OOS 0.0%
10.45 - HWY 218 NB MM 29 PILOT GR
1
OOS 0.0%

Often Cited Together

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

393.918 co-occurrences393.116 co-occurrences391.11B2-Z4 co-occurrences392.2RG4 co-occurrences396.17C4 co-occurrences393.55D34 co-occurrences393.83G4 co-occurrences393.75C4 co-occurrences393.95F4 co-occurrences393.783 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 4,807 carriers total • Page 1 of 193

Top Carriers with 393.23 Violations

Showing 25 of 4,807

fmcsa-violations
Top Carriers with 393.23 Violations
#CarrierUSDOT# Violations
#1J B HUNT TRANSPORT INC8080633
#2UNITED PARCEL SERVICE INC2180027
#3EVANS DELIVERY COMPANY INC3811122
#4XPO LOGISTICS FREIGHT INC24182922
#5WESTERN EXPRESS INC51141221
#6SWIFT TRANSPORTATION CO OF ARIZONA LLC5428319
#7ESTES EXPRESS LINES12101819
#8CENTRAL TRANSPORT LLC66117318
#9GULF WINDS INTERNATIONAL INC69014716
#10SAIA MOTOR FREIGHT LINE LLC2912416
#11NEW PRIME INC370615
#12STG DRAYAGE LLC68814313
#13RTS HOLDINGS LLC236530812
#14US XPRESS INC30302411
#15HUB GROUP DEDICATED LLC80182811
#16WERNER ENTERPRISES INC5346711
#17NFI INTERACTIVE LOGISTICS LLC148616810
#18POWERS REPAIR CORP313226410
#19UCP TRUCKING LLC398041710
#20GREENWOOD MOTOR LINES INC633919
#21D & E TRANSPORT33407158
#22IMC LOGISTICS LLC2929918
#23RUBEN CARLOS TREVINO SANCHEZ16496898
#24SCHNEIDER NATIONAL CARRIERS INC2641848
#25UNIVERSAL INTERMODAL SERVICES INC11629778

Recent Inspections

Latest inspections where 393.23 was cited • 5,781 total events • Page 1 of 232

Recent Inspections with 393.23

Showing 25 of 5,781

fmcsa-inspections
Recent Inspections with 393.23
DateReport #StateLevelOOS
Mar 23, 202687409561TXLevel 2Yes
Mar 16, 202687345245TXLevel 1Yes
Mar 5, 202687252804TXLevel 2No
Mar 4, 202687275933TXLevel 2Yes
Feb 19, 202687117191TXLevel 2No
Feb 16, 202687090876TXLevel 2No
Feb 15, 202687090837TXLevel 2No
Feb 12, 202687090835TXLevel 2No
Feb 9, 202687020581TXLevel 2No
Jan 29, 202686948068TXLevel 2Yes
Jan 21, 202686892617TXLevel 2Yes
Jan 21, 202686899065TXLevel 2No
Jan 19, 202686899904TXLevel 2Yes
Jan 16, 202686840409TXLevel 1No
Jan 8, 202686750784IALevel 2No
Dec 31, 202586695161TXLevel 2No
Dec 30, 202586696290TXLevel 2Yes
Dec 21, 202586668218TXLevel 2Yes
Dec 15, 202586569056NCLevel 2No
Dec 13, 202586665704TXLevel 2No
Dec 11, 202586583227TXLevel 2Yes
Dec 9, 202586528229NCLevel 2Yes
Dec 2, 202586470894IALevel 2Yes
Dec 1, 202586459529NCLevel 1Yes
Dec 1, 202586471778TXLevel 2Yes

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