TruckCodex

393.83G — Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment

FMCSA violation code under Vehicle Maintenance. 26,513 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
26,513
Code
393.83G
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
26,513
Carriers Cited
8,584

Violation Description

Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment

About This Violation Code

Code 393.83G 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 393.83G in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
26,513
OOS Events
478
OOS Rate
1.8%
Top State (180d)
Texas
6,397 events

Top Enforcing States

Where 393.83G is most commonly cited (last 180 days)

1.Texas
6,397
OOS 1.8%
2.US
1,946
OOS 0.0%
3.Arizona
92
OOS 0.0%
4.California
63
OOS 1.6%
5.Pennsylvania
23
OOS 0.0%
6.New Mexico
20
OOS 100.0%
7.Illinois
19
OOS 63.2%
8.Kentucky
17
OOS 41.2%
9.Utah
16
OOS 0.0%
10.Alabama
14
OOS 0.0%
11.South Dakota
11
OOS 0.0%
12.Washington
11
OOS 0.0%
13.Colorado
11
OOS 0.0%
14.Kansas
10
OOS 0.0%
15.Minnesota
9
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 393.83G citations. Red bars mark months with OOS-triggering citations.

707
Apr
1,431
May
1,426
Jun
1,452
Jul
1,521
Aug
1,557
Sep
1,680
Oct
1,404
Nov
1,438
Dec
1,735
Jan
1,682
Feb
1,777
Mar
72
Apr

Most Active Stations

Inspection stations citing 393.83G most often (last 180 days)

1.PHARR POE
1,391
OOS 0.1%
2.LAREDO TX
1,345
OOS 0.0%
3.COLUMBIA POE
982
OOS 0.3%
4.VETERANS POE
697
OOS 0.1%
5.INDIOS POE
410
OOS 0.7%
6.EL PASO TX
252
OOS 0.0%
7.NOGALES AZ
145
OOS 0.0%
8.BOTA POE
127
OOS 0.0%
9.CAMINO REAL POE
97
OOS 2.1%
10.US77 RIVIERA SCALE
91
OOS 17.6%

Often Cited Together

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

393.91,973 co-occurrences393.45B2UV1,448 co-occurrences396.5B1,243 co-occurrences391.11B2-Z1,180 co-occurrences396.3A11,126 co-occurrences393.47E1,114 co-occurrences393.78878 co-occurrences393.53B582 co-occurrences393.11565 co-occurrences393.55E500 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 8,584 carriers total • Page 1 of 344

Top Carriers with 393.83G Violations

Showing 25 of 8,584

fmcsa-violations
Top Carriers with 393.83G Violations
#CarrierUSDOT# Violations
#1JESUS MA VALDEZ GARCIA2534784125
#2TRANSPORTES DE CARGA FEMA SA DE CV1175018119
#3AKNA TRANSPORTES S DE RL DE CV1856796104
#4EDUARDO RODRIGUEZ GONZALEZ1503353102
#5INTER MEXICANA DE TRANSPORTE SA DE CV171641591
#6RUBEN CARLOS TREVINO SANCHEZ164968985
#7DYLKA DISTRIBUCIONES Y LOGISTIK SA DE CV251037281
#8JESUS PEDRO PEREZ CARRILLO115985175
#9JOSE ALONSO SARMIENTO TORRES228999271
#10JORGE ANTONIO SEPULVEDA247273971
#11AUTOFLETES GOMEZ LEAL SA DE CV208530870
#12MOVENTUM TRANSFER SA DE CV363027969
#13SANDRA PATRICIA CASANOVA GUILLEN92558168
#14TRANSPORTES DE CARGA SAUL SALINAS SA DE CV55767668
#15AUTOTRANSPORTES FRONTERIZOS MG SA DE CV177053465
#16AUTOTRANSPORTES VARELA DAVILA SA DE CV171682464
#17MARCOS ROSADO DIAZ327565864
#18ALMA LUZ SANTOS SALDIVAR180607162
#19AUTOTRANSPORTES ROMEDU SA DE CV114825962
#20HUGO EDUVILIO AYALA ORTEGA241502561
#21SERVICIOS RAPIDOS TREBOL SA DE CV82553561
#224G TRANSFER US-MEX SA DE CV282865161
#23MARIO ALBERTO TREJO141940960
#24TRAREYSA SA DE CV241278659
#25TRANSPORTES Y MAQUINARIA MORO SA DE CV378262758

Recent Inspections

Latest inspections where 393.83G was cited • 26,513 total events • Page 1 of 1061

Recent Inspections with 393.83G

Showing 25 of 26,513

fmcsa-inspections
Recent Inspections with 393.83G
DateReport #StateLevelOOS
Apr 3, 202687485182USLevel 1No
Apr 3, 202687485255USLevel 1No
Apr 3, 202687485036USLevel 1No
Apr 2, 202687488395TXLevel 2No
Apr 2, 202687485054USLevel 1No
Apr 2, 202687488201TXLevel 1No
Apr 2, 202687476256USLevel 1No
Apr 2, 202687487421TXLevel 2No
Apr 2, 202687488114TXLevel 1No
Apr 2, 202687488084TXLevel 1No
Apr 2, 202687488344TXLevel 1No
Apr 2, 202687484839USLevel 1No
Apr 2, 202687484875USLevel 1No
Apr 2, 202687485123USLevel 1No
Apr 2, 202687485126USLevel 1No
Apr 2, 202687487227TXLevel 2No
Apr 2, 202687487840TXLevel 1No
Apr 2, 202687485042USLevel 1No
Apr 2, 202687487494TXLevel 1No
Apr 1, 202687479495TXLevel 2No
Apr 1, 202687474495USLevel 1No
Apr 1, 202687474563USLevel 1No
Apr 1, 202687474566USLevel 1No
Apr 1, 202687475038USLevel 1No
Apr 1, 202687475043USLevel 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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