393.17(a) — Lamps and reflectors inadequate

FMCSA violation code under Vehicle Maintenance. 167 events recorded in roadside inspections. Severity weight: 3.

Severity Weight
3
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
167
Code
393.17(a)
Code System
FMCSR
BASIC Category
OOS Eligible
No
Severity Weight
3
Violation Group
Total Events
167
Carriers Cited
156

Violation Description

Operating a commercial motor vehicle with lamps or reflectors that do not meet the requirements.

About This Violation Code

Code 393.17(a) 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 393.17 in the Federal Motor Carrier Safety Regulations.

Events (all time)
167
OOS Events
146
OOS Rate
87.4%
Top State (180d)

Top Carriers Cited

Ranked by frequency • 156 carriers total • Page 1 of 7

Top Carriers with 393.17(a) Violations

Showing 25 of 156

fmcsa-violations

Recent Inspections

Latest inspections where 393.17(a) was cited • 167 total events • Page 1 of 7

Recent Inspections with 393.17(a)

Showing 25 of 167

fmcsa-inspections
Recent Inspections with 393.17(a)
DateReport #StateLevelOOS
Oct 2, 202482814108MALevel 2Yes
Sep 27, 202482776164MDLevel 2Yes
Sep 13, 202482679856MDLevel 1Yes
Sep 6, 202482597368NELevel 2No
Sep 6, 202482610904MILevel 2No
Sep 4, 202482569830MDLevel 2Yes
Aug 27, 202482494611MDLevel 2Yes
Aug 23, 202482511963TXLevel 2No
Aug 19, 202482419975MDLevel 2Yes
Aug 8, 202482334136MDLevel 2Yes
Aug 6, 202482312227MDLevel 2Yes
Aug 6, 202482337425MILevel 2Yes
Aug 5, 202482299242MDLevel 2Yes
Jul 13, 202482116011MALevel 2Yes
Jul 9, 202482084496OHLevel 2Yes
Jul 8, 202482056336MDLevel 2Yes
Jul 2, 202482020269MDLevel 2Yes
Jun 28, 202481990486MDLevel 2Yes
Jun 25, 202481958106MDLevel 2Yes
Jun 19, 202481923654IALevel 2Yes
Jun 13, 202481867466OHLevel 2Yes
Jun 13, 202481863054MDLevel 2Yes
Jun 11, 202481839483MDLevel 2Yes
Jun 10, 202481825095MDLevel 2Yes
Jun 10, 202481820858CTLevel 2Yes

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Unknown freshness
Federal Motor Carrier Safety Regulations (49 CFR)
Unknown freshness