392.9b(a) — 392.9b(a)

FMCSA violation code under Unsafe Driving. 6,070 events recorded in roadside inspections. Severity weight: N/A.

Severity Weight
N/A
OOS Eligible
No
BASIC Category
Unsafe Driving
Total Events
6,070
Code
392.9b(a)
Code System
FMCSR
BASIC Category
OOS Eligible
No
Severity Weight
N/A
Violation Group
Total Events
6,070
Carriers Cited
5,528

About This Violation Code

Code 392.9b(a) falls under the Unsafe Driving BASIC category in FMCSA's Safety Measurement System (SMS).

When this violation is cited during a roadside inspection, it contributes to the carrier's Unsafe Driving 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 392.9b in the Federal Motor Carrier Safety Regulations.

Events (all time)
6,070
OOS Events
3,186
OOS Rate
52.5%
Top State (180d)

Top Carriers Cited

Ranked by frequency • 5,528 carriers total • Page 1 of 222

Top Carriers with 392.9b(a) Violations

Showing 25 of 5,528

fmcsa-violations

Recent Inspections

Latest inspections where 392.9b(a) was cited • 6,070 total events • Page 1 of 243

Recent Inspections with 392.9b(a)

Showing 25 of 6,070

fmcsa-inspections
Recent Inspections with 392.9b(a)
DateReport #StateLevelOOS
Oct 15, 202482906114UTLevel 1No
Oct 15, 202482908748MDLevel 2Yes
Oct 15, 202482910257NCLevel 2No
Oct 14, 202482906506DELevel 2No
Oct 14, 202482907410USLevel 1Yes
Oct 14, 202482911344WYLevel 1No
Oct 14, 202482911319WYLevel 1No
Oct 14, 202482899237NCLevel 3Yes
Oct 14, 202482899552OKLevel 1No
Oct 14, 202482904832USLevel 1Yes
Oct 14, 202482898099DELevel 3No
Oct 14, 202482898282DELevel 3No
Oct 14, 202482908496MDLevel 2Yes
Oct 14, 202482912576TXLevel 3No
Oct 12, 202482912723TXLevel 3No
Oct 12, 202482906275USLevel 3Yes
Oct 12, 202482908361MALevel 3No
Oct 11, 202482907991ARLevel 1Yes
Oct 11, 202482894128COLevel 3No
Oct 11, 202482909070MELevel 1Yes
Oct 11, 202482906888IDLevel 1No
Oct 11, 202482899512OKLevel 1Yes
Oct 11, 202482900788TXLevel 2No
Oct 11, 202482896310FLLevel 2No
Oct 11, 202482897092WILevel 1Yes

Data sources & freshness

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