Carrier profile · USDOT 858640 · MC-439893 · Updated Aug 20, 2026

Robert R Newby

DBA GREENFIELD TRANSPORT

3 power unitsavg 16 yrLocal · 1 statesSAN LUIS OBISPO, CA50/100
CARRIER ACTIVEMC-439893 ACTIVE
Verified linksFMCSA SAFER

Operations & Lanes

Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.

Operating footprint· revealed by roadside-inspection geography

Operating radiusLocal
revealed
States observed1
US states
Inspections · 24 mo4
CA busiest

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base
SAN LUIS OBISPO, CA
804 O''CONNOR WAY
Top corridor
CA
CA 4
Density
fewermore
Shade = roadside inspections, last 24 mo.

State activity ranking· all 1 states · trailing 24 mo

Roadside inspections by state · ROBERT R NEWBY · trailing 24 months
StateCoverageInspections
CACaliforniaHQ4