TruckCodex

393.9TS — Inoperative turn signal

FMCSA violation code under Vehicle Maintenance. 52,302 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
52,302
Code
393.9TS
Code System
FMCSR
BASIC Category
Vehicle Maintenance
OOS Eligible
No
Severity Weight
N/A
Violation Group
—
Total Events
52,302
Carriers Cited
27,013

Violation Description

Inoperative turn signal

About This Violation Code

Code 393.9TS 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 393.9TS in the Federal Motor Carrier Safety Regulations.

View on eCFR.gov →FMCSA Violations Search →
Events (all time)
52,302
OOS Events
18,866
OOS Rate
36.1%
Top State (180d)
Texas
11,831 events

Top Enforcing States

Where 393.9TS is most commonly cited (last 180 days)

1.Texas
11,831
OOS 33.8%
2.North Carolina
1,514
OOS 50.1%
3.Iowa
686
OOS 36.7%
4.New Mexico
629
OOS 39.3%
5.Illinois
279
OOS 35.8%
6.Kentucky
14
OOS 42.9%
7.Pennsylvania
2
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 393.9TS citations. Red bars mark months with OOS-triggering citations.

1,315
Apr
2,878
May
2,795
Jun
2,980
Jul
2,858
Aug
2,821
Sep
2,983
Oct
2,492
Nov
2,674
Dec
2,643
Jan
2,934
Feb
2,909
Mar
122
Apr

Most Active Stations

Inspection stations citing 393.9TS most often (last 180 days)

1.YSLETA POE
402
OOS 64.7%
2.PHARR POE
351
OOS 38.5%
3.VETERANS POE
335
OOS 45.7%
4.COLUMBIA POE
315
OOS 57.8%
5.US281 SB FALFURRIAS SCALE
257
OOS 28.0%
6.BOTA POE
197
OOS 67.0%
7.CAMINO REAL POE
190
OOS 38.9%
8.INDIOS POE
187
OOS 38.0%
9.39 - I35 SB MM 212 NORTHWOOD
132
OOS 32.6%
10.US77 RIVIERA SCALE
119
OOS 37.8%

Often Cited Together

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

393.95,156 co-occurrences392.2RG1,641 co-occurrences393.191,558 co-occurrences393.781,278 co-occurrences396.17C1,221 co-occurrences393.47E939 co-occurrences393.45B2UV807 co-occurrences392.2W783 co-occurrences393.11771 co-occurrences396.5B764 co-occurrences

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

Top Carriers Cited

Ranked by frequency • 27,013 carriers total • Page 1 of 1081

Top Carriers with 393.9TS Violations

Showing 25 of 27,013

fmcsa-violations
Top Carriers with 393.9TS Violations
#CarrierUSDOT# Violations
#1SERVICIO INTERNACIONAL DE ENLACE TERRESTRE SA DE CV818175134
#2EVANS DELIVERY COMPANY INC38111128
#3RS TRANSFER SA DE CV115682584
#4FEDERAL EXPRESS CORPORATION8687683
#5OPERADORA DE TRANSPORTE INTERNACIONAL SA DE CV68342874
#6VRP TRANSPORTES DE MEXICO S DE RL DE CV66205868
#7RUBEN CARLOS TREVINO SANCHEZ164968966
#8TRANSPORTADORA NORTE DE CHIHUAHUA S A DE C V71112566
#9AUTOTRANSPORTE CA-RI SA DE CV175924661
#10TRANSPORTES DE CARGA SAUL SALINAS SA DE CV55767661
#11JESUS MA VALDEZ GARCIA253478460
#12SERVICIO DE TRANSPORTE INTERNACIONAL Y LOCAL SA DE CV55734159
#13GULF WINDS INTERNATIONAL INC69014754
#14TRANSPORTES AGUILA DE CIUDAD JUAREZ SA DE CV55536554
#15J B HUNT TRANSPORT INC8080654
#16TRANSPORTE INTERNACIONAL LOPEZ OCHOA SA DE C V104190750
#17TRANSPORTATION AND CARGO SOLUTIONS S DE RL DE CV77997349
#18AGGREGATE HAULERS I L P102148548
#19FLETES MEXICO CHIHUAHUA SA DE CV105311848
#20IMC LOGISTICS LLC29299145
#21AUTOTRANSPORTES FRONTERIZOS MG SA DE CV177053444
#22AUTOTRANSPORTES ROMEDU SA DE CV114825943
#23TRANSPORTES DE MAQUILAS DE CD JUAREZ SA DE CV71038342
#24CNC LOGISTICS S DE RL DE CV272620342
#25MVT SERVICES LLC27017941

Recent Inspections

Latest inspections where 393.9TS was cited • 52,302 total events • Page 1 of 2093

Recent Inspections with 393.9TS

Showing 25 of 52,302

fmcsa-inspections
Recent Inspections with 393.9TS
DateReport #StateLevelOOS
Apr 2, 202687488016TXLevel 2No
Apr 2, 202687487105TXLevel 2No
Apr 2, 202687487549TXLevel 2No
Apr 2, 202687487073TXLevel 2No
Apr 2, 202687486761ILLevel 1Yes
Apr 2, 202687486655NCLevel 2No
Apr 2, 202687486648NCLevel 2Yes
Apr 2, 202687486554NCLevel 2Yes
Apr 2, 202687487522TXLevel 2Yes
Apr 2, 202687488341TXLevel 2Yes
Apr 2, 202687488129TXLevel 2No
Apr 2, 202687488001TXLevel 1Yes
Apr 2, 202687486509NCLevel 2Yes
Apr 2, 202687486350NCLevel 2No
Apr 2, 202687487976TXLevel 2No
Apr 2, 202687487916TXLevel 2No
Apr 2, 202687487896TXLevel 2Yes
Apr 2, 202687487328TXLevel 2No
Apr 2, 202687487882TXLevel 2No
Apr 2, 202687488201TXLevel 1Yes
Apr 2, 202687487865TXLevel 2Yes
Apr 2, 202687488212TXLevel 1Yes
Apr 2, 202687487975TXLevel 2Yes
Apr 2, 202687488378TXLevel 2No
Apr 2, 202687487763TXLevel 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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