TruckCodex

393.83E — Exhaust - System discharging from a truck or truck-tractor at a location other than at the rear of the cab

FMCSA violation code under Vehicle Maintenance. 5,247 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
5,247
Code
393.83E
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
5,247
Carriers Cited
2,636

Violation Description

Exhaust - System discharging from a truck or truck-tractor at a location other than at the rear of the cab

About This Violation Code

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

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
5,247
OOS Events
12
OOS Rate
0.2%
Top State (180d)
US
969 events

Top Enforcing States

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

1.US
969
OOS 0.0%
2.California
67
OOS 1.5%
3.Arizona
66
OOS 0.0%
4.Texas
60
OOS 3.3%
5.Georgia
37
OOS 0.0%
6.Washington
25
OOS 0.0%
7.New York
19
OOS 0.0%
8.Pennsylvania
18
OOS 0.0%
9.Alabama
15
OOS 0.0%
10.Utah
14
OOS 0.0%
11.Wisconsin
13
OOS 0.0%
12.Colorado
12
OOS 0.0%
13.Missouri
11
OOS 0.0%
14.Florida
11
OOS 0.0%
15.Minnesota
11
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 393.83E citations. Red bars mark months with OOS-triggering citations.

173
Apr
336
May
334
Jun
342
Jul
373
Aug
318
Sep
396
Oct
246
Nov
244
Dec
269
Jan
232
Feb
271
Mar
20
Apr

Most Active Stations

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

1.LAREDO TX
403
OOS 0.0%
2.EL PASO TX
206
OOS 0.0%
3.BROWNSVILLE TX
179
OOS 0.0%
4.LOS INDIOS TX
54
OOS 0.0%
5.PROGRESO TX
53
OOS 0.0%
6.OTAY MESA IF
25
OOS 4.0%
7.TORNILLO TX
16
OOS 0.0%
8.PRESCOTT AZ
12
OOS 0.0%
9.SAN DIEGO CA
12
OOS 0.0%
10.PHARR TX
11
OOS 0.0%

Often Cited Together

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

396.5B-L294 co-occurrences391.11B2-Z276 co-occurrences393.47E146 co-occurrences393.209E-SPSLA117 co-occurrences393.55E-B117 co-occurrences396.3A1-ALBV94 co-occurrences393.45B2-B-AIR94 co-occurrences393.75C-TAOTD-LT2/3292 co-occurrences393.78A-WS91 co-occurrences393.55D1-B88 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 2,636 carriers total • Page 1 of 106

Top Carriers with 393.83E Violations

Showing 25 of 2,636

fmcsa-violations
Top Carriers with 393.83E Violations
#CarrierUSDOT# Violations
#1TRANSPORTES DE CARGA FEMA SA DE CV117501843
#2TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997342
#3AUTOTRANSPORTES ROMEDU SA DE CV114825937
#4ON TIME SERVICIOS TERRESTRES URGENTES SA DE CV82230132
#5AKNA TRANSPORTES S DE RL DE CV185679631
#6FLETES EXPRESS DEL NORTE SA DE CV105596429
#7OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342827
#8ALMA LUZ SANTOS SALDIVAR180607126
#9VRP TRANSPORTES DE MEXICO S DE RL DE CV66205825
#10SERVICIOS RAPIDOS TREBOL SA DE CV82553523
#11RUBEN CARLOS TREVINO SANCHEZ164968923
#12ADRIAN IVES PORTALES AGUILAR245638922
#13TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V104190721
#14SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV81817520
#15OMAR ALEJANDRO VILLARREAL MORONES292964320
#16SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV55734119
#17FLETES MEXICO CHIHUAHUA SA DE CV105311819
#18INTER MEXICANA DE TRANSPORTE SA DE CV171641519
#19CELEDONIO CASTILLO BENAVIDES203083318
#20AUTOTRANSPORTES FRONTERIZOS MG SA DE CV177053418
#21RGX TRANSPORTE DE CARGA INTERNACIONAL SA DE CV120767818
#22SAMA FREIGTH S DE RL DE CV372028718
#23SBC TRANSFER SA DE CV304603717
#24GALA-SCL SA DE CV113378417
#25ALDO GRACIEL BELLO DEL ANGEL285986217

Recent Inspections

Latest inspections where 393.83E was cited • 5,247 total events • Page 1 of 210

Recent Inspections with 393.83E

Showing 25 of 5,247

fmcsa-inspections
Recent Inspections with 393.83E
DateReport #StateLevelOOS
Apr 3, 202687485021USLevel 1No
Apr 2, 202687484723USLevel 1No
Apr 2, 202687476451USLevel 1No
Apr 2, 202687476427UTLevel 1No
Apr 1, 202687483978AZLevel 2No
Apr 1, 202687487597TXLevel 1No
Apr 1, 202687485091USLevel 1No
Apr 1, 202687484736USLevel 1No
Apr 1, 202687474882USLevel 2No
Apr 1, 202687474920USLevel 1No
Apr 1, 202687475037USLevel 1No
Apr 1, 202687475060USLevel 1No
Apr 1, 202687476218USLevel 1No
Apr 1, 202687475142USLevel 1No
Apr 1, 202687475230USLevel 1No
Apr 1, 202687483757AZLevel 1No
Apr 1, 202687475256USLevel 1No
Apr 1, 202687459274USLevel 1No
Apr 1, 202687459153USLevel 2No
Apr 1, 202687459154USLevel 2No
Mar 31, 202687457401ALLevel 2No
Mar 31, 202687451085USLevel 1No
Mar 31, 202687451103USLevel 1No
Mar 31, 202687452030PALevel 1No
Mar 31, 202687454393PALevel 2No

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
ToolSearch Carriers
Look up carriers by USDOT, name, or VIN