TruckCodex

393.19 — Hazard warning signal inoperable

FMCSA violation code under Vehicle Maintenance. 30,339 events recorded in roadside inspections. Severity weight: 3.

Severity Weight
3
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
30,339
Code
393.19
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
3
Violation Group
BASIC 5
Total Events
30,339
Carriers Cited
18,045

Violation Description

Commercial motor vehicle hazard warning signal flasher is inoperable or not functioning properly.

About This Violation Code

Code 393.19 falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 3 (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 393.19 in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
30,339
OOS Events
65
OOS Rate
0.2%
Top State (180d)
Texas
3,543 events

Top Enforcing States

Where 393.19 is most commonly cited (last 180 days)

1.Texas
3,543
OOS 0.2%
2.Georgia
148
OOS 0.0%
3.Arizona
117
OOS 0.0%
4.New Mexico
101
OOS 0.0%
5.Pennsylvania
84
OOS 0.0%
6.New York
70
OOS 0.0%
7.Washington
57
OOS 0.0%
8.Kentucky
52
OOS 0.0%
9.Iowa
44
OOS 0.0%
10.Michigan
38
OOS 0.0%
11.Illinois
35
OOS 14.3%
12.Florida
32
OOS 0.0%
13.Maryland
32
OOS 0.0%
14.North Carolina
30
OOS 0.0%
15.South Carolina
29
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 393.19 citations. Red bars mark months with OOS-triggering citations.

345
Apr
846
May
828
Jun
920
Jul
932
Aug
920
Sep
890
Oct
810
Nov
819
Dec
819
Jan
905
Feb
947
Mar
34
Apr

Most Active Stations

Inspection stations citing 393.19 most often (last 180 days)

1.PHARR POE
246
OOS 0.0%
2.VETERANS POE
235
OOS 0.0%
3.US281 SB FALFURRIAS SCALE
208
OOS 1.4%
4.INDIOS POE
129
OOS 0.8%
5.US77 RIVIERA SCALE
72
OOS 0.0%
6.COLUMBIA POE
50
OOS 0.0%
7.SH-0146 IN HARRIS CO. (482-500
44
OOS 0.0%
8.BOTA POE
38
OOS 0.0%
9.SH-0225 IN HARRIS CO. (686-700
35
OOS 0.0%
10.IH10 WB WINNIE SCALE
33
OOS 0.0%

Often Cited Together

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

393.91,694 co-occurrences393.9TS1,635 co-occurrences393.78503 co-occurrences392.2RG456 co-occurrences393.45B2UV396 co-occurrences393.11359 co-occurrences393.47E358 co-occurrences396.17C335 co-occurrences396.3A1296 co-occurrences396.5B277 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 18,045 carriers total • Page 1 of 722

Top Carriers with 393.19 Violations

Showing 25 of 18,045

fmcsa-violations
Top Carriers with 393.19 Violations
#CarrierUSDOT# Violations
#1RS TRANSFER SA DE CV1156825111
#2AUTOTRANSPORTES VARELA DAVILA SA DE CV1716824100
#3RUBEN CARLOS TREVINO SANCHEZ164968989
#4JESUS MA VALDEZ GARCIA253478484
#5EVANS DELIVERY COMPANY INC3811179
#6AUTOTRANSPORTES ROMEDU SA DE CV114825975
#7TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V104190770
#8TRANSPORTES DE CARGA SAUL SALINAS SA DE CV55767665
#9AUTOTRANSPORTES FRONTERIZOS MG SA DE CV177053461
#10TRANSPORTE INTERNACIONAL JONICK LOPEZ SA DE CV82098156
#11GULF WINDS INTERNATIONAL INC69014750
#12AUTOFLETES GOMEZ LEAL SA DE CV208530850
#13SANDRA PATRICIA CASANOVA GUILLEN92558147
#14FLETES Y ACARREOS DE REYNOSA SA DE CV85157447
#15AUTO EXPRESS SALDIVAR SA DE CV65353544
#16TRANSPORTES REFRIGERADOS GC XPRESS SA DE CV256380344
#17OSCAR GUILLERMO JURAIDINI SILVA251176243
#18IRASEMA MARTINEZ CEPEDA63283240
#19QUALITY TANK SA DE CV286460040
#20SERVICIOS ESPECIALIZADOS ALANIS SA DE CV55947739
#21PETROLIFICOS DE MONTERREY SA DE CV391046438
#22TRAREYSA SA DE CV241278637
#23JUAN PABLO GARCIA CHAVEZ217085636
#24J B HUNT TRANSPORT INC8080635
#25FLORENCIO GARCIA RUVALCABA90985634

Recent Inspections

Latest inspections where 393.19 was cited • 30,339 total events • Page 1 of 1214

Recent Inspections with 393.19

Showing 25 of 30,339

fmcsa-inspections
Recent Inspections with 393.19
DateReport #StateLevelOOS
Apr 3, 202687485382ORLevel 2No
Apr 3, 202687485462MOLevel 1No
Apr 2, 202687487105TXLevel 2No
Apr 2, 202687487328TXLevel 2No
Apr 2, 202687487549TXLevel 2No
Apr 2, 202687488082TXLevel 2No
Apr 2, 202687488341TXLevel 2No
Apr 2, 202687488378TXLevel 2No
Apr 2, 202687476371ORLevel 2No
Apr 1, 202687487944TXLevel 2No
Apr 1, 202687488325TXLevel 2No
Apr 1, 202687488308TXLevel 2No
Apr 1, 202687488269TXLevel 1No
Apr 1, 202687488216TXLevel 2No
Apr 1, 202687488159TXLevel 2No
Apr 1, 202687488154TXLevel 1No
Apr 1, 202687487968TXLevel 1No
Apr 1, 202687487949TXLevel 2No
Apr 1, 202687487742TXLevel 2No
Apr 1, 202687487682TXLevel 2No
Apr 1, 202687487649TXLevel 2No
Apr 1, 202687454249CTLevel 2No
Apr 1, 202687487444TXLevel 2No
Apr 1, 202687487300TXLevel 2No
Apr 1, 202687487140TXLevel 2No

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Updated 3 months ago
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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