TruckCodex

393.70B — Coupling devices defective

FMCSA violation code under Vehicle Maintenance. 630 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
630
Code
393.70B
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
8
Violation Group
—
Total Events
630
Carriers Cited
523

Violation Description

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

About This Violation Code

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

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
630
OOS Events
126
OOS Rate
20.0%
Top State (180d)
Texas
167 events

Top Enforcing States

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

1.Texas
167
OOS 16.8%
2.New Mexico
5
OOS 60.0%
3.Illinois
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 393.70B citations. Red bars mark months with OOS-triggering citations.

18
Apr
33
May
30
Jun
38
Jul
25
Aug
44
Sep
39
Oct
37
Nov
37
Dec
31
Jan
22
Feb
36
Mar
1
Apr

Most Active Stations

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

1.IH-0610 IN HARRIS CO. (0-37)
8
OOS 12.5%
2.COLUMBIA POE
6
OOS 0.0%
3.SH-0071 IN TRAVIS CO. (546-590
6
OOS 0.0%
4.TW-PGBT IN DALLAS CO. (895-165
4
OOS 0.0%
5.US380 DECATUR SCALE
4
OOS 25.0%
6.PHARR POE
4
OOS 0.0%
7.TW-0130 IN TRAVIS CO. (426-461
4
OOS 0.0%
8.VETERANS POE
4
OOS 0.0%
9.IH-0010 IN HARRIS CO. (742-797
3
OOS 0.0%
10.IH20 EB TERRELL SCALE
3
OOS 33.3%

Often Cited Together

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

393.944 co-occurrences392.2RG28 co-occurrences393.7817 co-occurrences396.17C16 co-occurrences393.45B2UV13 co-occurrences396.3A113 co-occurrences392.2W11 co-occurrences393.47E10 co-occurrences393.207A10 co-occurrences393.1110 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 523 carriers total • Page 1 of 21

Top Carriers with 393.70B Violations

Showing 25 of 523

fmcsa-violations
Top Carriers with 393.70B Violations
#CarrierUSDOT# Violations
#1STATEWIDE TRUCKING CORP3888865
#2PLATEROS TRUCKING SA DE CV35121404
#3XPEDITED TRANSPORT LLC24282184
#4TONY AKUDIGWE24411224
#5AGGREGATE HAULERS I L P10214854
#6POCKET ACE TRUCKING LLC42230803
#7MOVENTUM TRANSFER SA DE CV36302793
#8SUNBURST TRUCK LINES INC3147953
#9FIRST COAST LOGISTICS OF HOUSTON LLC32397233
#10O CUELLAR LLC19621573
#11CLARK FREIGHT LINES INC3653703
#12JORGE ANTONIO SEPULVEDA24727393
#13LOADING USA INC35207272
#14H FLORES LLC23372732
#15JESUS FLORES JR25637832
#16LK TRANSPORTATION INC42895362
#17YASSER ZAMORA TORRES26360812
#18FDH TRANSPORT LLC41778952
#19DIRECT TECH DRILLING LLC23127032
#20DEBORAH MALDONADO20064222
#21TRANS ESTRELLA SA DE CV27882122
#22TRANSPORTES LORO SA DE CV8819252
#23PROFESSIONAL HAULING SERVICES LLC34789212
#24JOCHVI EXPRESS LLC41982872
#25TOKKO CARRIERS DE MEXICO SA DE CV8330652

Recent Inspections

Latest inspections where 393.70B was cited • 630 total events • Page 1 of 26

Recent Inspections with 393.70B

Showing 25 of 630

fmcsa-inspections
Recent Inspections with 393.70B
DateReport #StateLevelOOS
Apr 2, 202687487611TXLevel 2No
Mar 31, 202687487618TXLevel 2No
Mar 30, 202687467275TXLevel 2No
Mar 30, 202687479734TXLevel 1No
Mar 27, 202687442253TXLevel 2No
Mar 27, 202687442255TXLevel 2No
Mar 26, 202687442078TXLevel 2No
Mar 26, 202687479713TXLevel 2Yes
Mar 26, 202687466625TXLevel 1Yes
Mar 25, 202687424041TXLevel 1Yes
Mar 25, 202687440811TXLevel 2No
Mar 24, 202687440701TXLevel 1No
Mar 23, 202687396810TXLevel 2Yes
Mar 23, 202687466109TXLevel 2No
Mar 18, 202687333755ILLevel 2Yes
Mar 17, 202687323624TXLevel 2No
Mar 15, 202687301219NMLevel 2Yes
Mar 12, 202687314650TXLevel 1No
Mar 12, 202687285230TXLevel 2Yes
Mar 12, 202687315372TXLevel 1No
Mar 12, 202687302920TXLevel 2No
Mar 11, 202687284690TXLevel 1No
Mar 10, 202687276058TXLevel 2No
Mar 10, 202687276681TXLevel 2No
Mar 5, 202687252788TXLevel 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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