TruckCodex

393.53B-B — Steering system components worn

FMCSA violation code under Vehicle Maintenance. 71,891 events recorded in roadside inspections. Severity weight: 7.

Severity Weight
7
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
71,891
Code
393.53B-B
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
7
Violation Group
—
Total Events
71,891
Carriers Cited
36,335

Violation Description

Steering system components (universal joints, ball joints, tie rods, drag links, pitman arms) are worn, fatigued, or defective.

About This Violation Code

Code 393.53B-B falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 7 (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 393.53B in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
71,891
OOS Events
7
OOS Rate
0.0%
Top State (180d)
California
4,949 events

Top Enforcing States

Where 393.53B-B is most commonly cited (last 180 days)

1.California
4,949
OOS 0.0%
2.US
3,430
OOS 0.0%
3.Missouri
917
OOS 0.0%
4.Utah
812
OOS 0.0%
5.Arizona
759
OOS 0.0%
6.Tennessee
749
OOS 0.0%
7.Kentucky
690
OOS 0.0%
8.Maryland
570
OOS 0.0%
9.Pennsylvania
509
OOS 0.0%
10.Arkansas
463
OOS 0.0%
11.Louisiana
461
OOS 0.0%
12.Washington
450
OOS 0.0%
13.Wisconsin
401
OOS 0.0%
14.Colorado
386
OOS 0.0%
15.Michigan
369
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 393.53B-B citations. Red bars mark months with OOS-triggering citations.

1,942
Apr
4,421
May
3,740
Jun
4,609
Jul
5,352
Aug
4,229
Sep
5,119
Oct
3,694
Nov
3,271
Dec
3,612
Jan
3,541
Feb
4,037
Mar
197
Apr

Most Active Stations

Inspection stations citing 393.53B-B most often (last 180 days)

1.LAREDO TX
975
OOS 0.0%
2.PHARR TX
414
OOS 0.0%
3.EL PASO TX
397
OOS 0.0%
4.DUNSMUIR GRADE IF
394
OOS 0.0%
5.CORDELIA IF
361
OOS 0.0%
6.DESERT HILLS IF
331
OOS 0.0%
7.CHOWCHILLA RIVER IF
328
OOS 0.0%
8.LONDON
305
OOS 0.0%
9.COTTONWOOD IF
303
OOS 0.0%
10.BROWNSVILLE TX
273
OOS 0.0%

Often Cited Together

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

393.47E12,712 co-occurrences396.3A1-BOS3,913 co-occurrences393.45D-B1,428 co-occurrences393.75A3-TAOL1,380 co-occurrences393.45B2-B-AIR1,376 co-occurrences396.5B-L1,141 co-occurrences393.55E-B1,039 co-occurrences396.3A1-BALAC790 co-occurrences396.17C-PI762 co-occurrences393.48A-BIBD706 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 36,335 carriers total • Page 1 of 1454

Top Carriers with 393.53B-B Violations

Showing 25 of 36,335

fmcsa-violations
Top Carriers with 393.53B-B Violations
#CarrierUSDOT# Violations
#1VRP TRANSPORTES DE MEXICO S DE RL DE CV662058192
#2SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV818175148
#3TRANSPORTES DE CARGA FEMA SA DE CV1175018144
#4EVANS DELIVERY COMPANY INC38111138
#5TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V711125131
#6TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV779973127
#7SWIFT TRANSPORTATION CO OF ARIZONA LLC54283116
#8J B HUNT TRANSPORT INC80806113
#9SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV557341113
#10FEDERAL EXPRESS CORPORATION86876107
#11OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342899
#12MARISOL ALONSO RIOS393387595
#13RGX TRANSPORTE DE CARGA INTERNACIONAL SA DE CV120767893
#14WESTERN EXPRESS INC51141292
#15TRANSPORTES CANALES S A DE C V55889983
#16LINEA AMERICA TRANSPORTE S DE RL DE CV324004382
#17AUTOLINEAS AMERICA SA DE CV83077879
#18AUTOTRANSPORTES ROMEDU SA DE CV114825976
#19AKNA TRANSPORTES S DE RL DE CV185679673
#20TRANSPORTES SOTO E HIJOS S A DE C V82445473
#21RS TRANSFER SA DE CV115682572
#22TRANSPORTES TERRESTRES VALDEZ SA DE CV247306672
#23BELTRAN BROTHERS LLC112203971
#24INTER MEXICANA DE TRANSPORTE SA DE CV171641569
#25UNITED PARCEL SERVICE INC2180068

Recent Inspections

Latest inspections where 393.53B-B was cited • 71,891 total events • Page 1 of 2876

Recent Inspections with 393.53B-B

Showing 25 of 71,891

fmcsa-inspections
Recent Inspections with 393.53B-B
DateReport #StateLevelOOS
Apr 3, 202687485641MALevel 5No
Apr 3, 202687485244MOLevel 1No
Apr 3, 202687485255USLevel 1No
Apr 3, 202687489294CALevel 1No
Apr 3, 202687488764CALevel 1No
Apr 3, 202687488590CALevel 1No
Apr 3, 202687485090USLevel 1No
Apr 3, 202687485748KYLevel 1No
Apr 2, 202687476589ORLevel 5No
Apr 2, 202687476427UTLevel 1No
Apr 2, 202687485765KYLevel 1No
Apr 2, 202687476103SCLevel 1No
Apr 2, 202687475702VALevel 1No
Apr 2, 202687475364ORLevel 5No
Apr 2, 202687475355SCLevel 1No
Apr 2, 202687475015ARLevel 1No
Apr 2, 202687477323OKLevel 1No
Apr 2, 202687477322OKLevel 1No
Apr 2, 202687477052KYLevel 1No
Apr 2, 202687477101KYLevel 1No
Apr 2, 202687476495USLevel 1No
Apr 2, 202687477005KYLevel 1No
Apr 2, 202687480134CALevel 1No
Apr 2, 202687484975VALevel 1No
Apr 2, 202687481041CALevel 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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