TruckCodex

393.70B1I-CDFAM — Coupling devices defective

FMCSA violation code under Vehicle Maintenance. 291 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
291
Code
393.70B1I-CDFAM
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
291
Carriers Cited
268

Violation Description

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

About This Violation Code

Code 393.70B1I-CDFAM 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 393.70B1I in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
291
OOS Events
255
OOS Rate
87.6%
Top State (180d)
California
66 events

Top Enforcing States

Where 393.70B1I-CDFAM is most commonly cited (last 180 days)

1.California
66
OOS 80.3%
2.Georgia
7
OOS 100.0%
3.Colorado
4
OOS 100.0%
4.Pennsylvania
4
OOS 100.0%
5.Tennessee
4
OOS 100.0%
6.US
3
OOS 100.0%
7.Kansas
2
OOS 100.0%
8.Utah
2
OOS 100.0%
9.Ohio
2
OOS 100.0%
10.Arizona
2
OOS 100.0%
11.New York
1
OOS 100.0%
12.Washington
1
OOS 100.0%
13.Alabama
1
OOS 100.0%
14.Wisconsin
1
OOS 100.0%
15.Connecticut
1
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 393.70B1I-CDFAM citations. Red bars mark months with OOS-triggering citations.

12
Apr
13
May
12
Jun
11
Jul
15
Aug
18
Sep
20
Oct
11
Nov
21
Dec
19
Jan
22
Feb
26
Mar
1
Apr

Most Active Stations

Inspection stations citing 393.70B1I-CDFAM most often (last 180 days)

1.DESERT HILLS IF
17
OOS 94.1%
2.CALEXICO IF
9
OOS 66.7%
3.SIDEWINDER PLATFORM SCALE
6
OOS 66.7%
4.GRAPEVINE IF
6
OOS 100.0%
5.COTTONWOOD IF
4
OOS 100.0%
6.PA
3
OOS 100.0%
7.CALEXICO ENFORCEMENT FACILITY
2
OOS 50.0%
8.MT. PASS CVEF JPOE
2
OOS 100.0%
9.CORDELIA IF
2
OOS 100.0%
10.CHOWCHILLA RIVER IF
2
OOS 50.0%

Often Cited Together

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

393.75A3-TAOL14 co-occurrences393.47A-BCFSBD10 co-occurrences393.207F-SDAS10 co-occurrences393.47E9 co-occurrences393.45B2-B-AIR8 co-occurrences392.2-SLLEQP7 co-occurrences396.17C-PI6 co-occurrences392.2-SLLSR5 co-occurrences393.53B-B5 co-occurrences393.9A-LSML5 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 268 carriers total • Page 1 of 11

Top Carriers with 393.70B1I-CDFAM Violations

Showing 25 of 268

fmcsa-violations
Top Carriers with 393.70B1I-CDFAM Violations
#CarrierUSDOT# Violations
#1J B HUNT TRANSPORT INC808064
#2EVANS DELIVERY COMPANY INC381113
#3SUN LEE INC6088133
#4KTR LOGISTICS INC19923543
#5CARAVAN LOGISTICS LLC30890952
#6MASHBURN TRANSPORTATION SERVICES INC7112852
#7MID ATLANTIC EXPRESS LLC33981462
#8HERMANN BROTHERS LOGGING & CONSTRUCTION INC5472382
#9LH LOGISTICS37002152
#10SOUTHBAY TRANSPORT INC18379732
#11MIRACLE TRANSPORTATION INC10016652
#12X-MAIL CORP21028862
#13E-TRANSPORT CARRIERS LLC10672442
#14FAITH IN TRANSIT LLC39385642
#15EDUARDO CEJA LOPEZ25541152
#16MVR DISTRIBUTORS INC34983002
#17KTL INC23521682
#18MIYON LOGISTICS LLC38316552
#19Q&S LOGISTICS LLC29814571
#20K-VAC ENVIRONMENTAL SERVICES INC8507951
#21JAIME ALFARO RODRIGUEZ20322141
#22SYSTEM TRANSPORT INC279351
#23CESAR HERNANDEZ14538151
#24A & T LOGISTICS SERVICES INC9417611
#25CHUCKAR TRUCKING LLC38552681

Recent Inspections

Latest inspections where 393.70B1I-CDFAM was cited • 291 total events • Page 1 of 12

Recent Inspections with 393.70B1I-CDFAM

Showing 25 of 291

fmcsa-inspections
Recent Inspections with 393.70B1I-CDFAM
DateReport #StateLevelOOS
Apr 2, 202687476659ALLevel 2Yes
Mar 31, 202687474859GALevel 2Yes
Mar 30, 202687469278CALevel 1No
Mar 27, 202687425074CALevel 2Yes
Mar 24, 202687403474COLevel 2Yes
Mar 24, 202687412498CALevel 1Yes
Mar 23, 202687398605CALevel 1Yes
Mar 20, 202687351750TNLevel 2Yes
Mar 20, 202687346199CALevel 1Yes
Mar 19, 202687387680CALevel 1Yes
Mar 19, 202687335422CALevel 2Yes
Mar 17, 202687325135CALevel 1Yes
Mar 16, 202687304899CALevel 2Yes
Mar 16, 202687316623CALevel 1Yes
Mar 13, 202687304766CALevel 1Yes
Mar 13, 202687305435CALevel 2Yes
Mar 10, 202687266471CALevel 1No
Mar 10, 202687345995CALevel 1Yes
Mar 9, 202687325973CALevel 1No
Mar 7, 202687239486TNLevel 2Yes
Mar 6, 202687325956CALevel 1Yes
Mar 5, 202687219311CALevel 1No
Mar 5, 202687229533CALevel 2Yes
Mar 4, 202687210987UTLevel 1Yes
Mar 3, 202687194309CALevel 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
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