TruckCodex

393.55C2-B — Coupling device/towing methods defective

FMCSA violation code under Vehicle Maintenance. 8,920 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
8,920
Code
393.55C2-B
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
8,920
Carriers Cited
6,660

Violation Description

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

About This Violation Code

Code 393.55C2-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 393.55C2 in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
8,920
OOS Events
1
OOS Rate
0.0%
Top State (180d)
Arizona
637 events

Top Enforcing States

Where 393.55C2-B is most commonly cited (last 180 days)

1.Arizona
637
OOS 0.0%
2.US
314
OOS 0.0%
3.Alabama
237
OOS 0.0%
4.New York
229
OOS 0.0%
5.Ohio
203
OOS 0.0%
6.Wisconsin
191
OOS 0.0%
7.Missouri
171
OOS 0.0%
8.Washington
146
OOS 0.0%
9.Pennsylvania
105
OOS 0.0%
10.North Dakota
72
OOS 0.0%
11.Idaho
69
OOS 0.0%
12.Florida
60
OOS 0.0%
13.New Jersey
51
OOS 0.0%
14.Virginia
49
OOS 0.0%
15.Minnesota
46
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 393.55C2-B citations. Red bars mark months with OOS-triggering citations.

306
Apr
590
May
491
Jun
571
Jul
620
Aug
579
Sep
608
Oct
493
Nov
483
Dec
476
Jan
468
Feb
569
Mar
29
Apr

Most Active Stations

Inspection stations citing 393.55C2-B most often (last 180 days)

1.KINGMAN AZ
91
OOS 0.0%
2.LAREDO TX
82
OOS 0.0%
3.GRANDVIEW WA
78
OOS 0.0%
4.TONOPAH AZ
70
OOS 0.0%
5.NOGALES AZ
69
OOS 0.0%
6.ELOY AZ
52
OOS 0.0%
7.ST. LOUIS MO
50
OOS 0.0%
8.SAN LUIS AZ
46
OOS 0.0%
9.CLE ELUM WA
41
OOS 0.0%
10.PA
41
OOS 0.0%

Often Cited Together

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

396.17C-PI222 co-occurrences393.55E-B191 co-occurrences395.24146 co-occurrences393.78A-WS135 co-occurrences393.75A3-TAOL126 co-occurrences393.47E124 co-occurrences393.9A-LIL118 co-occurrences393.45D-B112 co-occurrences395.8E-HOSPD109 co-occurrences395.30B1-ELDDFR104 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 6,660 carriers total • Page 1 of 267

Top Carriers with 393.55C2-B Violations

Showing 25 of 6,660

fmcsa-violations
Top Carriers with 393.55C2-B Violations
#CarrierUSDOT# Violations
#1NEW PRIME INC370635
#2LIPSA TRANSPORTES SA DE CV258414433
#3J B HUNT TRANSPORT INC8080627
#4CHILO'S TRUCKING LLC115446026
#5SOSA BROS TRUCKING LLC310902526
#6VILLICANA TRANSPORTATION LLC121938723
#7BELTRAN BROTHERS LLC112203922
#8SWIFT TRANSPORTATION CO OF ARIZONA LLC5428320
#9UNITED PARCEL SERVICE INC2180020
#10ALFONSO GRIJALVA GRACIA98885720
#11TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997318
#12MR BULT'S INC38710217
#13TRANSPORTES EMMA S DE RL DE CV66475616
#14FEDERAL EXPRESS CORPORATION8687616
#15SCHNEIDER NATIONAL CARRIERS INC26418415
#16TRACTOREMOLQUES AMSA SA DE CV120337315
#17JORGE YEPIZ PLASCENCIA87943314
#18WESTERN EXPRESS INC51141213
#19TORNADO BUS COMPANY56585913
#20COMERCIALIZADORA MARSER SA DE CV293422812
#21PILOT TRAVEL CENTERS LLC9180512
#22BRYTON TRUCKING LLC304755511
#23FERRARIS TRANSPORTES SA DE CV125268111
#24OMAR CANDELARIO HERNANDEZ BUENO204952511
#25CENTRAL TRANSPORT LLC66117310

Recent Inspections

Latest inspections where 393.55C2-B was cited • 8,920 total events • Page 1 of 357

Recent Inspections with 393.55C2-B

Showing 25 of 8,920

fmcsa-inspections
Recent Inspections with 393.55C2-B
DateReport #StateLevelOOS
Apr 3, 202687485183ALLevel 2No
Apr 3, 202687485194USLevel 1No
Apr 3, 202687485283ALLevel 2No
Apr 3, 202687485407SDLevel 2No
Apr 2, 202687484453AZLevel 2No
Apr 2, 202687484625OHLevel 2No
Apr 2, 202687484570USLevel 1No
Apr 2, 202687476160ALLevel 2No
Apr 2, 202687484267ALLevel 2No
Apr 2, 202687476711MALevel 1No
Apr 1, 202687459406MOLevel 2No
Apr 1, 202687475275USLevel 2No
Apr 1, 202687458482ALLevel 2No
Apr 1, 202687475276USLevel 1No
Apr 1, 202687483484OHLevel 1No
Apr 1, 202687482410AZLevel 2No
Apr 1, 202687483257OHLevel 2No
Apr 1, 202687475250NDLevel 2No
Apr 1, 202687482246AZLevel 2No
Apr 1, 202687458897ALLevel 2No
Apr 1, 202687458696SCLevel 2No
Apr 1, 202687483733AZLevel 2No
Apr 1, 202687475037USLevel 1No
Apr 1, 202687476289ALLevel 2No
Apr 1, 202687483329AZLevel 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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