TruckCodex

396.3A1BOS — BRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the vehicle or combination

FMCSA violation code under Vehicle Maintenance. 23,333 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
23,333
Code
396.3A1BOS
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
23,333
Carriers Cited
15,755

Violation Description

BRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the vehicle or combination

About This Violation Code

Code 396.3A1BOS falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS).

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 396.3A1BOS in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
23,333
OOS Events
23,305
OOS Rate
99.9%
Top State (180d)
Texas
6,042 events

Top Enforcing States

Where 396.3A1BOS is most commonly cited (last 180 days)

1.Texas
6,042
OOS 100.0%
2.New Mexico
402
OOS 100.0%
3.Illinois
260
OOS 100.0%
4.Iowa
213
OOS 100.0%
5.North Carolina
136
OOS 100.0%
6.Kentucky
2
OOS 100.0%
7.Pennsylvania
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 396.3A1BOS citations. Red bars mark months with OOS-triggering citations.

584
Apr
1,560
May
1,109
Jun
1,267
Jul
1,350
Aug
1,069
Sep
1,388
Oct
1,223
Nov
1,010
Dec
1,281
Jan
1,478
Feb
1,430
Mar
44
Apr

Most Active Stations

Inspection stations citing 396.3A1BOS most often (last 180 days)

1.PHARR POE
347
OOS 100.0%
2.YSLETA POE
338
OOS 100.0%
3.COLUMBIA POE
290
OOS 100.0%
4.LORDSBURG PORT OF ENTRY
144
OOS 100.0%
5.BOTA POE
139
OOS 100.0%
6.US281 SB FALFURRIAS SCALE
138
OOS 100.0%
7.US77 RIVIERA SCALE
119
OOS 100.0%
8.IH35 SB DEVINE SCALE
112
OOS 100.0%
9.IH10 WB WINNIE SCALE
101
OOS 100.0%
10.INDIOS POE
91
OOS 100.0%

Often Cited Together

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

393.47E5,173 co-occurrences393.48A2,819 co-occurrences393.53B2,301 co-occurrences393.91,865 co-occurrences393.45B2UV1,265 co-occurrences392.2RG1,017 co-occurrences396.3A1911 co-occurrences396.3A1B808 co-occurrences396.5B790 co-occurrences393.78708 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 15,755 carriers total • Page 1 of 631

Top Carriers with 396.3A1BOS Violations

Showing 25 of 15,755

fmcsa-violations
Top Carriers with 396.3A1BOS Violations
#CarrierUSDOT# Violations
#1SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV81817567
#2OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342858
#3TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997351
#4SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV55734145
#5EVANS DELIVERY COMPANY INC3811141
#6VRP TRANSPORTES DE MEXICO S DE RL DE CV66205837
#7SERGIO VARELA MALDONADO72522636
#8AGGREGATE HAULERS I L P102148536
#9TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V71112534
#10TRANSPORTES AGUILA DE CIUDAD JUAREZ SA DE CV55536534
#11TRANSPORTES SOTO E HIJOS S A DE C V82445433
#12TRANSPORTES CRUZADOS SA DE CV169461129
#13SERVICIOS DE LOGISTICA TRANSNACIONAL EN TRANSPORTACION SA DE CV238091127
#14RGX TRANSPORTE DE CARGA INTERNACIONAL SA DE CV120767826
#15TRANSPORTES LARMEX SA DE CV243635326
#16AUTOTRANSPORTES VARELA DAVILA SA DE CV171682425
#17ACME TRUCK LINE INC5276725
#18TEXAS INTERNATIONAL ENTERPRISES INC219691223
#19THO LOGISTIC SA DE CV411394823
#20BORDER EXPRESS DE MEXICO SA DE CV169217921
#214G TRANSFER US-MEX SA DE CV282865120
#22JESUS MA VALDEZ GARCIA253478419
#23IRASEMA MARTINEZ CEPEDA63283218
#24STUDENT TRANSPORTATION OF AMERICA INC235620818
#25TRANSPORTES CANALES S A DE C V55889917

Recent Inspections

Latest inspections where 396.3A1BOS was cited • 23,333 total events • Page 1 of 934

Recent Inspections with 396.3A1BOS

Showing 25 of 23,333

fmcsa-inspections
Recent Inspections with 396.3A1BOS
DateReport #StateLevelOOS
Apr 2, 202687487520TXLevel 1Yes
Apr 2, 202687488055TXLevel 2Yes
Apr 2, 202687487275TXLevel 1Yes
Apr 2, 202687486760ILLevel 1Yes
Apr 2, 202687488363TXLevel 1Yes
Apr 2, 202687488083TXLevel 1Yes
Apr 2, 202687487686TXLevel 1Yes
Apr 2, 202687487211TXLevel 1Yes
Apr 2, 202687486398NCLevel 1Yes
Apr 1, 202687487931TXLevel 1Yes
Apr 1, 202687478731TXLevel 1Yes
Apr 1, 202687487752TXLevel 1Yes
Apr 1, 202687487824TXLevel 1Yes
Apr 1, 202687479822TXLevel 1Yes
Apr 1, 202687487773TXLevel 1Yes
Apr 1, 202687479058TXLevel 1Yes
Apr 1, 202687487378TXLevel 1Yes
Apr 1, 202687479074TXLevel 1Yes
Apr 1, 202687479212TXLevel 1Yes
Apr 1, 202687477468IALevel 1Yes
Apr 1, 202687488305TXLevel 1Yes
Apr 1, 202687479286TXLevel 1Yes
Apr 1, 202687488277TXLevel 1Yes
Apr 1, 202687479077TXLevel 2Yes
Apr 1, 202687477445IALevel 1Yes

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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