393.17B — Lamps and reflectors inadequate

FMCSA violation code under Vehicle Maintenance. 108 events recorded in roadside inspections. Severity weight: 3.

Severity Weight
3
OOS Eligible
No
BASIC Category
Vehicle Maintenance
Total Events
108
Code
393.17B
Code System
FMCSR
BASIC Category
OOS Eligible
No
Severity Weight
3
Violation Group
Total Events
108
Carriers Cited
96

Violation Description

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

About This Violation Code

Code 393.17B 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 393.17B in the Federal Motor Carrier Safety Regulations.

Events (all time)
108
OOS Events
99
OOS Rate
91.7%
Top State (180d)
Texas
8 events

Top Enforcing States

Where 393.17B is most commonly cited (last 180 days)

1.Texas
8
OOS 87.5%
2.North Carolina
4
OOS 100.0%
3.Illinois
3
OOS 100.0%
4.Pennsylvania
3
OOS 66.7%
5.New Mexico
1
OOS 100.0%

Click a state to see roadside inspection activity, top stations, and carrier profiles in that jurisdiction.

Citation Trend (12 months)

Monthly count of 393.17B citations. Red bars mark months with OOS-triggering citations.

1
Apr
5
May
6
Jun
2
Jul
3
Aug
3
Sep
6
Oct
2
Nov
9
Feb
3
Mar

Most Active Stations

Inspection stations citing 393.17B most often (last 180 days)

Often Cited Together

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

Top Carriers Cited

Ranked by frequency • 96 carriers total • Page 1 of 4

Top Carriers with 393.17B Violations

Showing 25 of 96

fmcsa-violations

Recent Inspections

Latest inspections where 393.17B was cited • 108 total events • Page 1 of 5

Recent Inspections with 393.17B

Showing 25 of 108

fmcsa-inspections
Recent Inspections with 393.17B
DateReport #StateLevelOOS
Mar 31, 202687464999NMLevel 2Yes
Mar 24, 202687395603NCLevel 2Yes
Mar 2, 202687181545PALevel 2Yes
Feb 26, 202687164780PALevel 2No
Feb 25, 202687149601NCLevel 2Yes
Feb 24, 202687139402ILLevel 2Yes
Feb 17, 202687078602ILLevel 2Yes
Feb 13, 202687049729ILLevel 2Yes
Feb 13, 202687053093PALevel 2Yes
Feb 11, 202687066225TXLevel 1Yes
Feb 10, 202687016375NCLevel 1Yes
Feb 5, 202687065635TXLevel 2Yes
Nov 25, 202586461247TXLevel 2Yes
Nov 21, 202586414302TXLevel 2Yes
Oct 30, 202586223928TXLevel 2Yes
Oct 29, 202586444203TXLevel 1Yes
Oct 28, 202586199105TXLevel 2Yes
Oct 24, 202586224897TXLevel 2No
Oct 22, 202586140163NCLevel 2Yes
Oct 2, 202585951304NCLevel 2Yes
Sep 10, 202585747839NCLevel 1Yes
Sep 5, 202585722009NCLevel 1Yes
Sep 2, 202585694443ILLevel 2Yes
Aug 11, 202585469611NCLevel 2Yes
Aug 7, 202585443077PALevel 1No

Data sources & freshness

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