TruckCodex

393.50 — Steering mechanism defective

FMCSA violation code under Vehicle Maintenance. 464 events recorded in roadside inspections. Severity weight: 8. Out-of-service eligible.

OOS Eligible
Severity Weight
8
OOS Eligible
Yes
BASIC Category
Vehicle Maintenance
Total Events
464
Code
393.50
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
Yes
Severity Weight
8
Violation Group
BASIC 5
Total Events
464
Carriers Cited
414

Violation Description

Steering mechanism on commercial motor vehicle is defective, broken, or not functioning properly.

About This Violation Code

Code 393.50 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). This violation is Out-of-Service eligible, meaning the driver or vehicle may be placed out of service at roadside when cited.

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 393.50 in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
464
OOS Events
85
OOS Rate
18.3%
Top State (180d)
Texas
43 events

Top Enforcing States

Where 393.50 is most commonly cited (last 180 days)

1.Texas
43
OOS 9.3%
2.New Mexico
3
OOS 33.3%
3.North Carolina
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 393.50 citations. Red bars mark months with OOS-triggering citations.

2
Apr
6
May
14
Jun
9
Jul
6
Aug
6
Sep
11
Oct
6
Nov
9
Dec
10
Jan
10
Feb
8
Mar

Most Active Stations

Inspection stations citing 393.50 most often (last 180 days)

1.COLUMBIA POE
17
OOS 0.0%
2.NB 59, IH 35
4
OOS 0.0%
3.SH-0288 IN HARRIS CO. (472-484
4
OOS 0.0%
4.IH-0610 IN HARRIS CO. (0-37)
3
OOS 33.3%
5.3100 E SH 71 WB HWY
1
OOS 100.0%
6.700 MCCARTY ST
1
OOS 0.0%
7.8300 MYKAWA RD
1
OOS 0.0%
8.9900 SOUTH FWY WEST
1
OOS 0.0%
9.BOTA POE
1
OOS 0.0%
10.FM-1788 IN MIDLAND CO. (316-34
1
OOS 100.0%

Often Cited Together

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

396.3A110 co-occurrences393.115 co-occurrences393.48A4 co-occurrences393.94 co-occurrences393.60C4 co-occurrences392.2W3 co-occurrences393.47E3 co-occurrences393.45B2UV3 co-occurrences393.207A3 co-occurrences393.9TS3 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 414 carriers total • Page 1 of 17

Top Carriers with 393.50 Violations

Showing 25 of 414

fmcsa-violations
Top Carriers with 393.50 Violations
#CarrierUSDOT# Violations
#1JULIO CESAR CIENFUEGOS GARZA23895666
#2XPRESS INTERNACIONAL S DE RL DE CV15986634
#3SANDRA CECILIA ROMERO LOREDO33728154
#4RICARDO MACIAS21417774
#5FH LOGISTICA SA DE CV11539263
#6SOLUCIONES LOGISTICAS DEL NORTE SA DE CV34591053
#7BETOS TRUCKING SA DE CV23062853
#8FUZION CARRIERS DE MEXICO SA DE CV8774993
#9NESTOR GONZALEZ QUINONES32755073
#10LAURA ESTELA ESTRADA GARZA25299233
#11TRANSPORTES LARMEX SA DE CV24363533
#12UNITED PETROLEUM TRANSPORTS INC1850402
#13ADAN SERNA PEREZ12365192
#14SBC TRANSFER SA DE CV30460372
#15JUAN ANTONIO FLORES BENAVIDES27838102
#16DETA LOGIS PLUS LLC37287002
#17VICTOR AMADO LOZANO CANTU30616492
#18ASHNEM HAULING LLC20100092
#19MOONLIGHT EXPRESS LLC33745212
#20INTER MEXICANA DE TRANSPORTE SA DE CV17164152
#21JOSE ALBERTO GONZALEZ DON JUAN38987282
#22LINGO HULLER INC27967202
#23JOSE CRUZ BADILLO GOVEA28502852
#24DS5 TRANSPORT LLC31071722
#25HUGO EDUVILIO AYALA ORTEGA24150252

Recent Inspections

Latest inspections where 393.50 was cited • 464 total events • Page 1 of 19

Recent Inspections with 393.50

Showing 25 of 464

fmcsa-inspections
Recent Inspections with 393.50
DateReport #StateLevelOOS
Mar 23, 202687466502TXLevel 1No
Mar 19, 202687343504NMLevel 1No
Mar 12, 202687314637TXLevel 1No
Mar 11, 202687276788TXLevel 1No
Mar 6, 202687253539TXLevel 1No
Mar 6, 202687253542TXLevel 1No
Mar 4, 202687254106TXLevel 1No
Mar 3, 202687228571TXLevel 1No
Feb 27, 202687225288NMLevel 1Yes
Feb 25, 202687183875TXLevel 1No
Feb 20, 202687264514TXLevel 1No
Feb 19, 202687154789TXLevel 1No
Feb 19, 202687098999NCLevel 1No
Feb 16, 202687090921TXLevel 1No
Feb 16, 202687090842TXLevel 1No
Feb 12, 202687080186TXLevel 1No
Feb 10, 202687044999TXLevel 1No
Feb 9, 202687065423TXLevel 1No
Jan 21, 202686898814TXLevel 1No
Jan 20, 202686866133TXLevel 2No
Jan 16, 202686840920TXLevel 1No
Jan 13, 202686806758TXLevel 1No
Jan 12, 202686794039TXLevel 1No
Jan 8, 202686768202TXLevel 1No
Jan 8, 202686948413TXLevel 2No

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Updated 3 months ago
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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