JOHN MARK BROWN
AUTHORIZEDUSDOT
646584
MC Number
N/A
Fleet Size
3
Total Drivers
2
Last updated: March 15, 2026
Safety overview
JOHN MARK BROWN is a small interstate motor carrier based in MORGANFIELD, Kentucky, operating 3 power units with 2 drivers. Their safety profile raises flags: 3 of 5 BASIC categories exceed the 75th percentile, which is where FMCSA considers stepping in. No crashes on file.
BASIC scores
SMS PercentilesHigher percentile = worse performance relative to peers. Scores at or above 75% may trigger an FMCSA investigation.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Private (Property)
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
What are BASIC scores?
FMCSA tracks carrier performance through its Safety Measurement System (SMS), which scores carriers across six categories called BASICs. Each score is a percentile from 0 to 100, based on inspection and crash data from the past 24 months.
A score of 65 means the carrier performed worse than 65% of its peers. Anything above 75% can trigger FMCSA alerts or investigations. Brokers vetting new carriers should pay attention to scores above 50%.
- Unsafe driving
- Speeding, reckless driving, improper lane changes, seatbelt violations. All based on what officers find during roadside inspections.
- HOS / Fatigue
- Hours-of-service violations, logbook problems, driving past the allowed limits. Fatigued driving is one of the top causes of truck crashes in the US.
- Driver fitness
- Licensing problems, expired medical certificates, and other driver qualification issues.
- Controlled substances
- Drug and alcohol testing violations, possession, or impairment.
- Vehicle maintenance
- Brake problems, tire issues, lighting defects, load securement failures. Caught during the vehicle portion of roadside inspections.
- Crash indicator
- Based on crash history from state-reported data. Higher percentile means more crashes relative to the carrier's size and mileage.
Inspections
0
Total
—
Driver %
Crash history
0
Total Crashes
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Frequently asked questions
Is JOHN MARK BROWN authorized to operate?
Yes. JOHN MARK BROWN (USDOT #646584) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is JOHN MARK BROWN's safety record?
JOHN MARK BROWN has 3 BASIC scores above the 75th percentile, which is where FMCSA may look into a carrier. Brokers should weigh these scores alongside the inspection history and crash data before making a decision.
How many trucks does JOHN MARK BROWN operate?
JOHN MARK BROWN operates 3 power units with 2 drivers on file. That makes them a small carrier.
Does JOHN MARK BROWN transport hazardous materials?
No. JOHN MARK BROWN does not have a hazardous materials flag in the FMCSA database.
Where is JOHN MARK BROWN located?
JOHN MARK BROWN is based in MORGANFIELD, Kentucky at 4334 STATE ROUTE 492, 42437. Phone: (270) 997-0604.