TruckCodex

393.55E-B — Coupling device/towing methods defective

FMCSA violation code under Vehicle Maintenance. 88,757 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
88,757
Code
393.55E-B
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
88,757
Carriers Cited
36,027

Violation Description

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

About This Violation Code

Code 393.55E-B 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 393.55E in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
88,757
OOS Events
2
OOS Rate
0.0%
Top State (180d)
US
5,239 events

Top Enforcing States

Where 393.55E-B is most commonly cited (last 180 days)

1.US
5,239
OOS 0.0%
2.Arizona
2,787
OOS 0.0%
3.California
2,291
OOS 0.0%
4.Washington
1,314
OOS 0.0%
5.Ohio
1,061
OOS 0.0%
6.Alabama
898
OOS 0.0%
7.Utah
883
OOS 0.0%
8.New York
835
OOS 0.0%
9.Colorado
825
OOS 0.0%
10.Wisconsin
553
OOS 0.0%
11.Missouri
530
OOS 0.0%
12.Pennsylvania
431
OOS 0.0%
13.Virginia
413
OOS 0.0%
14.Minnesota
362
OOS 0.0%
15.Kentucky
348
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 393.55E-B citations. Red bars mark months with OOS-triggering citations.

2,276
Apr
5,075
May
4,615
Jun
5,043
Jul
5,190
Aug
4,909
Sep
5,008
Oct
4,037
Nov
3,912
Dec
4,018
Jan
4,201
Feb
4,470
Mar
217
Apr

Most Active Stations

Inspection stations citing 393.55E-B most often (last 180 days)

1.LAREDO TX
2,290
OOS 0.0%
2.BROWNSVILLE TX
534
OOS 0.0%
3.EL PASO TX
508
OOS 0.0%
4.NOGALES AZ
463
OOS 0.0%
5.BOW WA
387
OOS 0.0%
6.PHARR TX
359
OOS 0.0%
7.CALEXICO IF
334
OOS 0.0%
8.CASTAIC IF
307
OOS 0.0%
9.GRANDVIEW WA
248
OOS 0.0%
10.SANDERS AZ
235
OOS 0.0%

Often Cited Together

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

393.47E1,635 co-occurrences396.17C-PI1,550 co-occurrences393.75A3-TAOL1,379 co-occurrences393.45B2-B-AIR1,326 co-occurrences393.45D-B1,298 co-occurrences396.5B-L1,121 co-occurrences393.53B-B1,104 co-occurrences391.11B2-Z1,063 co-occurrences393.9A-LIL918 co-occurrences393.75C-TAOTD-LT2/32895 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 36,027 carriers total • Page 2 of 1442

Top Carriers with 393.55E-B Violations

Showing 25 of 36,027

fmcsa-violations
Top Carriers with 393.55E-B Violations
#CarrierUSDOT# Violations
#26RS TRANSFER SA DE CV1156825133
#27TRANSPORTES EMMA S DE RL DE CV664756129
#28ALFONSO GRIJALVA GRACIA988857128
#29ARALO EXPRESS SA DE CV2882454124
#30ROLANDO VILLANUEVA NAVARRO559151122
#31CHILO'S TRUCKING LLC1154460119
#32SERGIO VARELA MALDONADO725226118
#33BULLET TRANSPORT SERVICES MX S DE RL DE CV2403092117
#34EVANS DELIVERY COMPANY INC38111117
#35TRANSPORTES ORTA SA DE CV3085830117
#36TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV779973117
#37SBC TRANSFER SA DE CV3046037114
#38SAUL BALDOMERO RODRIGUEZ SANCHEZ635061114
#39JOSE CARLOS MENDOZA HERNANDEZ1024222114
#40OCTAVIO ANDRADE CORELLA558440114
#41ALEJANDRA ESQUIVEL FERNANDEZ2351073114
#42TSM CONNECT SA DE CV2134155114
#43TRANSPORTES DE CARGA SAUL SALINAS SA DE CV557676112
#44DANIEL ERNESTO PENA COTA1647639108
#45KORAIMA EVELYN GRIJALVA DE LA ROSA3747934103
#46JOSE LUIS ARMENTA GAXIOLA1531559103
#47XPRESS INTERNACIONAL S DE RL DE CV1598663101
#48JORGE ARMANDO PINEDA CERVANTES2339278100
#49US XPRESS INC30302497
#50MARISOL ALONSO RIOS393387596

Recent Inspections

Latest inspections where 393.55E-B was cited • 88,757 total events • Page 1 of 3551

Recent Inspections with 393.55E-B

Showing 25 of 88,757

fmcsa-inspections
Recent Inspections with 393.55E-B
DateReport #StateLevelOOS
Apr 3, 202687485060USLevel 1No
Apr 3, 202687484883USLevel 1No
Apr 3, 202687485090USLevel 1No
Apr 3, 202687489419CALevel 2No
Apr 3, 202687485081USLevel 2No
Apr 3, 202687484890USLevel 1No
Apr 3, 202687484676SCLevel 2No
Apr 3, 202687485282ALLevel 2No
Apr 3, 202687485027USLevel 1No
Apr 3, 202687485059USLevel 1No
Apr 3, 202687485250USLevel 1No
Apr 3, 202687486695OKLevel 1No
Apr 3, 202687485564LALevel 2No
Apr 3, 202687485826KYLevel 1No
Apr 3, 202687484881USLevel 1No
Apr 3, 202687489460CALevel 5No
Apr 3, 202687489480CALevel 5No
Apr 2, 202687485114USLevel 1No
Apr 2, 202687488917CALevel 1No
Apr 2, 202687489229CALevel 1No
Apr 2, 202687488406CALevel 2No
Apr 2, 202687484874USLevel 1No
Apr 2, 202687484838USLevel 1No
Apr 2, 202687485376ARLevel 1No
Apr 2, 202687488684CALevel 5No

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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