392.50B-D — 392.50B-D
FMCSA violation code under Controlled Substances/Alcohol. 3 events recorded in roadside inspections. Severity weight: N/A.
About This Violation Code
Code 392.50B-D falls under the Controlled Substances/Alcohol BASIC category in FMCSA's Safety Measurement System (SMS).
When this violation is cited during a roadside inspection, it contributes to the carrier's Controlled Substances/Alcohol 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 392.50B in the Federal Motor Carrier Safety Regulations.
Top Enforcing States
Where 392.50B-D is most commonly cited (last 180 days)
Click a state to see roadside inspection activity, top stations, and carrier profiles in that jurisdiction.
Citation Trend (12 months)
Monthly count of 392.50B-D citations. Red bars mark months with OOS-triggering citations.
Most Active Stations
Inspection stations citing 392.50B-D most often (last 180 days)
Often Cited Together
Other violations commonly found on the same inspection (last 90 days)
Citation patterns suggest related root causes (e.g., HOS violations paired with logbook errors).
Top Carriers Cited
Ranked by frequency • 3 carriers total
Top Carriers with 392.50B-D Violations
| # | Carrier | USDOT | # Violations |
|---|---|---|---|
| #1 | GREAT WESTERN LEASING AND SALES LLC | 704697 | 1 |
| #2 | WIND RIVER ENVIRONMENTAL LLC | 846857 | 1 |
| #3 | T & M INCORPORATED | 339790 | 1 |
Recent Inspections
Latest inspections where 392.50B-D was cited • 3 total events