Carrier profile · USDOT 858640 · MC-439893 · Updated Jun 13, 2026
ROBERT R NEWBY
DBA GREENFIELD TRANSPORT
3 power unitsavg 16 yrLocal · 1 statesSAN LUIS OBISPO, CA50/100
CARRIER ACTIVEMC-439893 ACTIVE
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 804 O'CONNOR WAY, SAN LUIS OBISPO, CA, 93405
- Mailing address
- PO BOX 12433, SAN LUIS OBISPO, CA, 93406
- Operation
- Interstate
Contact
- Phone
- (805) 545-8477
- Cell
- (805) 234-2283
- slonewby@aol.com
Registration
- Officer
- Robert R Newby
- USDOT / docket
- 858640 · MC-439893
- First registered
- Feb 28, 2000
- Last MCS-150
- Dec 2, 2025 · 60,000 mi (2023)
- FMCSA safety rating
- Not rated
- D-U-N-S
- 8278686
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.