TruckCodex

393.70D — Coupling devices defective

FMCSA violation code under Vehicle Maintenance. 110 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
110
Code
393.70D
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
110
Carriers Cited
104

Violation Description

Coupling devices and towing methods are defective, including fifth wheel, kingpin, pintle hook, and drawbar.

About This Violation Code

Code 393.70D 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 393.70D in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
110
OOS Events
79
OOS Rate
71.8%
Top State (180d)
Illinois
12 events

Top Enforcing States

Where 393.70D is most commonly cited (last 180 days)

1.Illinois
12
OOS 58.3%
2.North Carolina
4
OOS 50.0%
3.Texas
4
OOS 75.0%

Click a state to see roadside inspection activity, top stations, and carrier profiles in that jurisdiction.

Citation Trend (12 months)

Monthly count of 393.70D citations. Red bars mark months with OOS-triggering citations.

8
May
5
Jun
10
Jul
9
Aug
14
Sep
3
Oct
3
Nov
5
Dec
3
Jan
3
Feb
3
Mar
1
Apr

Most Active Stations

Inspection stations citing 393.70D most often (last 180 days)

1.031 - MARYVILLE - I-55/70 S/B
1
OOS 100.0%
2.I-57 N/B
1
OOS 100.0%
3.I-74
1
OOS 0.0%
4.I-80 E/B
1
OOS 0.0%
5.I-88 WB
1
OOS 0.0%
6.I-90 W/B MP 21
1
OOS 100.0%
7.IL-72
1
OOS 0.0%
8.NA
1
OOS 100.0%
9.43
1
OOS 100.0%
10.HILLSBOROUGH WEIGH STATION, I-
1
OOS 0.0%

Often Cited Together

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

393.98 co-occurrences392.2RG5 co-occurrences396.17C4 co-occurrences393.114 co-occurrences393.43D3 co-occurrences393.207A3 co-occurrences393.432 co-occurrences391.41A1-NPH2 co-occurrences391.41A2 co-occurrences390.21TB2 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 104 carriers total • Page 1 of 5

Top Carriers with 393.70D Violations

Showing 25 of 104

fmcsa-violations
Top Carriers with 393.70D Violations
#CarrierUSDOT# Violations
#1CMH HOMES INC3014502
#2WALKER TREE SERVICE15022552
#3GERARDO CORONADO24916112
#4TWIN ROSES LOGISTICS LLC32878622
#5WORLDWIDE TECH INC41360462
#6PATSY MCRAE ALMAND38480722
#7MAPLE'S EXPRESS DELIVERY SERVICES LLC34990081
#8MILLENNIAL AG SOLUTIONS LLC41242491
#9MADCITY LOGISTICS INC36655141
#10BRIMAX TRANSPORT LLC42582651
#11JR 76 TRANSPORT LLC37563711
#12GILBERT ESPINOSA19463011
#133D TRANSPORT LLC42935151
#14MCLARRY SAND & GRAVEL LLC17388741
#15K1K TRANS LLC42823911
#16M&J INDUSTRIAL SERVICES LLC33558371
#17RELIANCE RENTAL AND LEASING CO12523231
#18MODES TRUCKING LTD CO34783861
#19MARSHALL II ENTERPRISES INC15596251
#20JAMES B SEFCIK19408751
#215 POINT TRANSPORTATION LLC35589491
#22BILITER CONSTRUCTION DBA38727851
#23B&H TRUCKING ENTERPRISES LLC15334251
#24STANFORD TRUCKING INC10539771
#25THE GREAT AMERICAN LAND COMPANY13186441

Recent Inspections

Latest inspections where 393.70D was cited • 110 total events • Page 1 of 5

Recent Inspections with 393.70D

Showing 25 of 110

fmcsa-inspections
Recent Inspections with 393.70D
DateReport #StateLevelOOS
Apr 1, 202687477642ILLevel 1No
Mar 21, 202687373195TXLevel 2Yes
Mar 13, 202687290946ILLevel 1No
Mar 3, 202687202664NCLevel 1Yes
Feb 16, 202687064517ILLevel 3No
Feb 12, 202687067441TXLevel 1Yes
Feb 10, 202687017594ILLevel 2Yes
Jan 20, 202686883255ILLevel 2Yes
Jan 20, 202686866199TXLevel 1Yes
Jan 17, 202686883323ILLevel 2No
Dec 28, 202586709513TXLevel 4No
Dec 24, 202586663623NCLevel 1No
Dec 12, 202586570183ILLevel 1Yes
Dec 11, 202586561164ILLevel 1Yes
Dec 1, 202586460403ILLevel 1Yes
Nov 21, 202586412863ILLevel 1Yes
Nov 17, 202586351107NCLevel 2Yes
Nov 11, 202586313799ILLevel 1Yes
Oct 29, 202586197573ILLevel 2No
Oct 22, 202586140950NCLevel 1No
Oct 12, 202586032102NCLevel 1Yes
Sep 29, 202585928809IALevel 2Yes
Sep 28, 202585900760NCLevel 2Yes
Sep 26, 202585969318ILLevel 1Yes
Sep 25, 202586026104ILLevel 1No

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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