TruckCodex

393.23-LEU — Lighting - All electrical systems on towed vehicle(s) inoperative due to no electrical connection (e.g. unplugged or loose pigtail)

FMCSA violation code under Vehicle Maintenance. 6,621 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
6,621
Code
393.23-LEU
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
6,621
Carriers Cited
5,453

Violation Description

Lighting - All electrical systems on towed vehicle(s) inoperative due to no electrical connection (e.g. unplugged or loose pigtail)

About This Violation Code

Code 393.23-LEU 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)
6,621
OOS Events
6,514
OOS Rate
98.4%
Top State (180d)
Pennsylvania
167 events

Top Enforcing States

Where 393.23-LEU is most commonly cited (last 180 days)

1.Pennsylvania
167
OOS 95.8%
2.California
165
OOS 95.2%
3.Washington
145
OOS 100.0%
4.Missouri
136
OOS 100.0%
5.Georgia
135
OOS 100.0%
6.Maryland
127
OOS 100.0%
7.Michigan
124
OOS 96.8%
8.Ohio
105
OOS 100.0%
9.South Carolina
75
OOS 100.0%
10.Arizona
67
OOS 100.0%
11.New York
66
OOS 100.0%
12.Kansas
59
OOS 100.0%
13.US
48
OOS 100.0%
14.Florida
46
OOS 100.0%
15.Wisconsin
46
OOS 100.0%

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

138
Apr
323
May
307
Jun
371
Jul
358
Aug
360
Sep
403
Oct
284
Nov
327
Dec
418
Jan
390
Feb
428
Mar
28
Apr

Most Active Stations

Inspection stations citing 393.23-LEU most often (last 180 days)

1.PA
43
OOS 90.7%
2.BALTIMORE MD
26
OOS 100.0%
3.LONDON OH
20
OOS 100.0%
4.EAGLEVILLE MO
16
OOS 100.0%
5.ATLANTA GA
14
OOS 100.0%
6.ST. LOUIS MO
14
OOS 100.0%
7.YUMA AZ
13
OOS 100.0%
8.NJ
13
OOS 100.0%
9.MEMPHIS TN
13
OOS 100.0%
10.LACEY WA
13
OOS 100.0%

Often Cited Together

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

396.17C-PI203 co-occurrences392.2-SLLSR161 co-occurrences393.75A3-TAOL140 co-occurrences393.95A181 co-occurrences390.21TB2-DOT78 co-occurrences393.95F76 co-occurrences393.9A-LIL71 co-occurrences390.21TB1-MC71 co-occurrences391.41APC70 co-occurrences393.48A-BIHE66 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 5,453 carriers total • Page 1 of 219

Top Carriers with 393.23-LEU Violations

Showing 25 of 5,453

fmcsa-violations
Top Carriers with 393.23-LEU Violations
#CarrierUSDOT# Violations
#1FEDERAL EXPRESS CORPORATION8687642
#2WESTERN EXPRESS INC51141235
#3J B HUNT TRANSPORT INC8080635
#4GREENWOOD MOTOR LINES INC6339126
#5UNITED PARCEL SERVICE INC2180026
#6SWIFT TRANSPORTATION CO OF ARIZONA LLC5428324
#7EVANS DELIVERY COMPANY INC3811124
#8ESTES EXPRESS LINES12101820
#9SCHNEIDER NATIONAL CARRIERS INC26418420
#10NEW PRIME INC370619
#11US XPRESS INC30302417
#12HUB GROUP DEDICATED LLC80182817
#13XPO LOGISTICS FREIGHT INC24182917
#14SAIA MOTOR FREIGHT LINE LLC2912416
#15WERNER ENTERPRISES INC5346715
#16CENTRAL TRANSPORT LLC66117313
#17IMC LOGISTICS LLC29299111
#18AAA COOPER TRANSPORTATION9226110
#19PENSKE LOGISTICS LLC26801510
#20CRST EXPEDITED INC5377310
#21C & K TRUCKING LLC5408649
#22ABF FREIGHT SYSTEM INC828668
#23RYDER TRANSPORTATION SOLUTIONS LLC2990738
#24NFI INTERACTIVE LOGISTICS LLC14861688
#25CONTAINERPORT GROUP INC2327347

Recent Inspections

Latest inspections where 393.23-LEU was cited • 6,621 total events • Page 1 of 265

Recent Inspections with 393.23-LEU

Showing 25 of 6,621

fmcsa-inspections
Recent Inspections with 393.23-LEU
DateReport #StateLevelOOS
Apr 3, 202687484135KSLevel 2Yes
Apr 2, 202687477802MILevel 1Yes
Apr 2, 202687476399UTLevel 2Yes
Apr 2, 202687484724OHLevel 2Yes
Apr 2, 202687476124PALevel 2Yes
Apr 2, 202687476431PALevel 1Yes
Apr 2, 202687477322OKLevel 1Yes
Apr 2, 202687480063CALevel 2Yes
Apr 2, 202687486933MILevel 2Yes
Apr 2, 202687477772MILevel 1Yes
Apr 2, 202687484740TNLevel 2Yes
Apr 2, 202687483819SCLevel 2Yes
Apr 2, 202687475462PALevel 2Yes
Apr 1, 202687480622CALevel 2Yes
Apr 1, 202687483803OHLevel 2Yes
Apr 1, 202687482794MDLevel 1Yes
Apr 1, 202687474201MOLevel 2Yes
Apr 1, 202687483495COLevel 2Yes
Apr 1, 202687477806MILevel 3Yes
Apr 1, 202687470371CALevel 3Yes
Apr 1, 202687483274OHLevel 2Yes
Apr 1, 202687483686OHLevel 2Yes
Apr 1, 202687478096MILevel 1Yes
Apr 1, 202687484715COLevel 2Yes
Apr 1, 202687483139FLLevel 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