TruckCodex

393.55D3 — Coupling device/towing methods defective

FMCSA violation code under Vehicle Maintenance. 7,899 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
7,899
Code
393.55D3
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
7,899
Carriers Cited
5,089

Violation Description

Coupling devices or towing methods on commercial motor vehicle are defective or inadequate.

About This Violation Code

Code 393.55D3 falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 8 (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 393.55D3 in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
7,899
OOS Events
4
OOS Rate
0.1%
Top State (180d)
Texas
2,947 events

Top Enforcing States

Where 393.55D3 is most commonly cited (last 180 days)

1.Texas
2,947
OOS 0.1%
2.New Mexico
22
OOS 0.0%
3.Illinois
11
OOS 0.0%
4.Iowa
10
OOS 0.0%
5.North Carolina
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 393.55D3 citations. Red bars mark months with OOS-triggering citations.

156
Apr
415
May
404
Jun
407
Jul
425
Aug
452
Sep
473
Oct
440
Nov
521
Dec
562
Jan
613
Feb
622
Mar
28
Apr

Most Active Stations

Inspection stations citing 393.55D3 most often (last 180 days)

1.US281 SB FALFURRIAS SCALE
341
OOS 0.3%
2.VETERANS POE
235
OOS 0.0%
3.COLUMBIA POE
220
OOS 0.0%
4.YSLETA POE
193
OOS 0.0%
5.BOTA POE
108
OOS 0.0%
6.IH-0030 IN DALLAS CO. (32-64)
71
OOS 0.0%
7.PHARR POE
57
OOS 0.0%
8.US380 DECATUR SCALE
30
OOS 0.0%
9.IH-0020 IN DALLAS CO. (455-486
26
OOS 0.0%
10.IH20 LORAINE SCALE
23
OOS 0.0%

Often Cited Together

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

393.9932 co-occurrences393.45B2UV378 co-occurrences393.47E275 co-occurrences392.2RG269 co-occurrences393.78267 co-occurrences392.2W250 co-occurrences396.3A1243 co-occurrences393.11235 co-occurrences393.75C232 co-occurrences396.5B192 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 5,089 carriers total • Page 1 of 204

Top Carriers with 393.55D3 Violations

Showing 25 of 5,089

fmcsa-violations
Top Carriers with 393.55D3 Violations
#CarrierUSDOT# Violations
#1AUTOTRANSPORTES ROMEDU SA DE CV114825965
#2OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342842
#3TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V104190740
#4SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV81817540
#5TRANSPORTES LARMEX SA DE CV243635339
#6TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V71112531
#7RS TRANSFER SA DE CV115682530
#8QUALITY TANK SA DE CV286460028
#9TRANSPORTES AGUILA DE CIUDAD JUAREZ SA DE CV55536527
#10VRP TRANSPORTES DE MEXICO S DE RL DE CV66205823
#11TRANSPORTACION CARRETERA SA DE CV310083321
#12SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV55734119
#13FLETES MEXICO CHIHUAHUA SA DE CV105311818
#14SERGIO VARELA MALDONADO72522618
#15TRANSPORTES ORTA SA DE CV308583018
#16GEC TRANSPORT SOLUTIONS LLC312720017
#17SERVICIOS ESPECIALIZADOS ALANIS SA DE CV55947717
#18SERVICIOS DE LOGISTICA TRANSNACIONAL EN TRANSPORTACION SA DE CV238091117
#19RUBEN CARLOS TREVINO SANCHEZ164968917
#20AUTOTRANSPORTES FRONTERIZOS MG SA DE CV177053416
#21TRANSERVICIOS SA DE CV55879015
#22FLORENCIO GARCIA RUVALCABA90985615
#23JUAN PABLO GARCIA CHAVEZ217085615
#24TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997314
#25TRANSPORTES SOTO E HIJOS S A DE C V82445414

Recent Inspections

Latest inspections where 393.55D3 was cited • 7,899 total events • Page 1 of 316

Recent Inspections with 393.55D3

Showing 25 of 7,899

fmcsa-inspections
Recent Inspections with 393.55D3
DateReport #StateLevelOOS
Apr 2, 202687486764ILLevel 2No
Apr 2, 202687486826ILLevel 2No
Apr 2, 202687486763ILLevel 2No
Apr 2, 202687488199TXLevel 2No
Apr 2, 202687488041TXLevel 2No
Apr 2, 202687488082TXLevel 2No
Apr 2, 202687487915TXLevel 2No
Apr 2, 202687487838TXLevel 2No
Apr 2, 202687488198TXLevel 2No
Apr 2, 202687488114TXLevel 1No
Apr 1, 202687487085TXLevel 1No
Apr 1, 202687487887TXLevel 1No
Apr 1, 202687487888TXLevel 1No
Apr 1, 202687488038TXLevel 2No
Apr 1, 202687487973TXLevel 2No
Apr 1, 202687487969TXLevel 1No
Apr 1, 202687487959TXLevel 2No
Apr 1, 202687487667TXLevel 2No
Apr 1, 202687487591TXLevel 1No
Apr 1, 202687487440TXLevel 2No
Apr 1, 202687487685TXLevel 1No
Apr 1, 202687487339TXLevel 2No
Apr 1, 202687479288TXLevel 1No
Apr 1, 202687479059TXLevel 1No
Apr 1, 202687479495TXLevel 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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