TruckCodex

393.80A — Exhaust system defective

FMCSA violation code under Vehicle Maintenance. 3,335 events recorded in roadside inspections. Severity weight: 4.

Severity Weight
4
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
3,335
Code
393.80A
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
4
Violation Group
—
Total Events
3,335
Carriers Cited
2,831

Violation Description

Exhaust system on commercial motor vehicle is leaking, not properly secured, or discharging below the floor of the vehicle.

About This Violation Code

Code 393.80A falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 4 (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 393.80A in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
3,335
OOS Events
14
OOS Rate
0.4%
Top State (180d)
Georgia
118 events

Top Enforcing States

Where 393.80A is most commonly cited (last 180 days)

1.Georgia
118
OOS 0.0%
2.US
61
OOS 0.0%
3.Washington
60
OOS 0.0%
4.New Jersey
59
OOS 1.7%
5.New York
56
OOS 0.0%
6.Ohio
38
OOS 0.0%
7.Minnesota
33
OOS 0.0%
8.Pennsylvania
30
OOS 0.0%
9.Kansas
27
OOS 0.0%
10.California
26
OOS 0.0%
11.Massachusetts
21
OOS 0.0%
12.Arizona
21
OOS 0.0%
13.Kentucky
20
OOS 0.0%
14.Missouri
18
OOS 0.0%
15.Tennessee
18
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 393.80A citations. Red bars mark months with OOS-triggering citations.

62
Apr
163
May
159
Jun
181
Jul
176
Aug
153
Sep
150
Oct
149
Nov
152
Dec
141
Jan
142
Feb
134
Mar
3
Apr

Most Active Stations

Inspection stations citing 393.80A most often (last 180 days)

1.NJ
34
OOS 2.9%
2.NOGALES AZ
24
OOS 0.0%
3.SAN DIEGO CA
18
OOS 0.0%
4.LAREDO TX
15
OOS 0.0%
5.BRONX NY
13
OOS 0.0%
6.ATLANTA GA
13
OOS 0.0%
7.PA
10
OOS 0.0%
8.KS
8
OOS 0.0%
9.DESERT HILLS IF
6
OOS 0.0%
10.FOREST PARK GA
6
OOS 0.0%

Often Cited Together

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

393.75A3-TAOL103 co-occurrences393.60C100 co-occurrences393.203C-CBP86 co-occurrences396.5B-L69 co-occurrences393.9A-LCL59 co-occurrences393.9A-LIL54 co-occurrences393.203A-CBP53 co-occurrences393.203E-CBP51 co-occurrences393.11A1-LHLM47 co-occurrences393.203B-CBP45 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 2,831 carriers total • Page 1 of 114

Top Carriers with 393.80A Violations

Showing 25 of 2,831

fmcsa-violations
Top Carriers with 393.80A Violations
#CarrierUSDOT# Violations
#1FEDERAL EXPRESS CORPORATION8687627
#2J B HUNT TRANSPORT INC8080616
#3JESUS PEDRO PEREZ CARRILLO115985114
#4EVANS DELIVERY COMPANY INC3811111
#5LOGISTICA HNOS IRIARTE SA DE CV345638310
#6SWIFT TRANSPORTATION CO OF ARIZONA LLC542838
#7OCTAVIO ANDRADE CORELLA5584408
#8ALFRI EXPRESS SA DE CV9775228
#9LIPSA TRANSPORTES SA DE CV25841448
#10NEW PRIME INC37068
#11JOSE RAFAEL HERNANDEZ MERCADO32796257
#12US XPRESS INC3030247
#13THE MEADOWS SCHOOL13221197
#14SCHNEIDER NATIONAL CARRIERS INC2641847
#15JOSE LUIS ARMENTA GAXIOLA15315596
#16TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V10419076
#17TRACTOREMOLQUES AMSA SA DE CV12033736
#18UNITED PARCEL SERVICE INC218006
#19FIRST STUDENT INC3544066
#20UNIVERSAL INTERMODAL SERVICES INC11629775
#21WESTERN EXPRESS INC5114125
#22NEW JERSEY TRANSIT CORPORATION742935
#23DKM LOGISTICA SA DE CV31189765
#24MARISELA LEDEZMA PICAZO28281405
#25MERCANOR SOLUTIONS SA DE CV41191495

Recent Inspections

Latest inspections where 393.80A was cited • 3,335 total events • Page 1 of 134

Recent Inspections with 393.80A

Showing 25 of 3,335

fmcsa-inspections
Recent Inspections with 393.80A
DateReport #StateLevelOOS
Apr 2, 202687486684OKLevel 2No
Apr 2, 202687484875USLevel 1No
Apr 1, 202687476827MELevel 2No
Mar 31, 202687474859GALevel 2No
Mar 31, 202687472628MDLevel 1No
Mar 31, 202687475270NYLevel 1No
Mar 31, 202687481793OHLevel 2No
Mar 31, 202687474962GALevel 2No
Mar 30, 202687436706USLevel 1No
Mar 30, 202687432980CTLevel 2No
Mar 30, 202687457524WILevel 2No
Mar 29, 202687455275GALevel 2No
Mar 29, 202687445258CALevel 2No
Mar 28, 202687440114OKLevel 2No
Mar 28, 202687435164AZLevel 2No
Mar 28, 202687447376KSLevel 1No
Mar 27, 202687458827INLevel 1No
Mar 27, 202687434726GALevel 1No
Mar 27, 202687417984USLevel 1No
Mar 27, 202687455854WALevel 2No
Mar 27, 202687483831NYLevel 1No
Mar 27, 202687433682WILevel 2No
Mar 27, 202687448559NJLevel 2No
Mar 27, 202687483156MNLevel 1No
Mar 27, 202687418371MALevel 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
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