393.70B1II-CDBL — Coupling devices defective

FMCSA violation code under Vehicle Maintenance. 130 events recorded in roadside inspections. Severity weight: 8.

Severity Weight
8
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
130
Code
393.70B1II-CDBL
Code System
FMCSR
BASIC Category
OOS Eligible
No
Severity Weight
8
Violation Group
Total Events
130
Carriers Cited
112

Violation Description

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

About This Violation Code

Code 393.70B1II-CDBL 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 393.70B1II in the Federal Motor Carrier Safety Regulations.

Events (all time)
130
OOS Events
1
OOS Rate
0.8%
Top State (180d)
California
6 events

Top Enforcing States

Where 393.70B1II-CDBL is most commonly cited (last 180 days)

1.California
6
OOS 0.0%
2.South Carolina
3
OOS 0.0%
3.US
3
OOS 0.0%
4.Kentucky
2
OOS 0.0%
5.Indiana
1
OOS 0.0%
6.Kansas
1
OOS 0.0%
7.Missouri
1
OOS 0.0%
8.North Dakota
1
OOS 0.0%
9.New York
1
OOS 0.0%
10.Oklahoma
1
OOS 0.0%
11.Pennsylvania
1
OOS 0.0%
12.Vermont
1
OOS 0.0%
13.Alabama
1
OOS 0.0%
14.Washington
1
OOS 0.0%
15.Arkansas
1
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 393.70B1II-CDBL citations. Red bars mark months with OOS-triggering citations.

7
Apr
10
May
8
Jun
2
Jul
10
Aug
9
Sep
1
Oct
5
Nov
8
Dec
5
Jan
3
Feb
5
Mar

Most Active Stations

Inspection stations citing 393.70B1II-CDBL most often (last 180 days)

1.MODESTO AREA
2
OOS 0.0%
2.SHELBYVILLE
2
OOS 0.0%
3.WELLTON AZ
1
OOS 0.0%
4.MADERA AREA
1
OOS 0.0%
5.MISSION GRADE IF
1
OOS 0.0%
8.DANBURY
1
OOS 0.0%
10.VAN BUREN AR
1
OOS 0.0%

Often Cited Together

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

Top Carriers Cited

Ranked by frequency • 112 carriers total • Page 1 of 5

Top Carriers with 393.70B1II-CDBL Violations

Showing 25 of 112

fmcsa-violations

Recent Inspections

Latest inspections where 393.70B1II-CDBL was cited • 130 total events • Page 1 of 6

Recent Inspections with 393.70B1II-CDBL

Showing 25 of 130

fmcsa-inspections
Recent Inspections with 393.70B1II-CDBL
DateReport #StateLevelOOS
Mar 26, 202687412322CALevel 2No
Mar 25, 202687404159USLevel 1No
Mar 20, 202687375974CALevel 2No
Mar 18, 202687323080OKLevel 2No
Mar 14, 202687306712USLevel 1No
Feb 27, 202687168392CALevel 5No
Feb 23, 202687115698KSLevel 2No
Feb 12, 202687041169NDLevel 2No
Jan 22, 202686869940SCLevel 2No
Jan 13, 202686803785USLevel 2No
Jan 13, 202686771788CTLevel 1No
Jan 12, 202686773347ARLevel 1No
Jan 5, 202686780094PALevel 2No
Dec 29, 202586681322MOLevel 2No
Dec 16, 202586596100CALevel 2No
Dec 15, 202586609940SCLevel 2No
Dec 11, 202586540691KYLevel 1No
Dec 9, 202587382148VTLevel 1No
Dec 1, 202586488207WALevel 2No
Nov 26, 202586454597CALevel 1No
Nov 18, 202586358675NYLevel 2No
Nov 18, 202586367162AZLevel 2No
Nov 15, 202586330280ALLevel 2No
Nov 9, 202586276358SCLevel 2No
Oct 31, 202586230852INLevel 1No

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Unknown freshness
Federal Motor Carrier Safety Regulations (49 CFR)
Unknown freshness