RONALD B MASON
USDOT 2019948 · Doing business as MASON MECHANICAL SERVICES LLC
Active
Active, interstate carrier, small fleet (2 power units) — no FMCSA safety rating on record (common).
USDOT2019948
MC NumberMC-1635726
Fleet2 power units
Drivers2
Phone5712332585
LocationJefferson, MD
Registration
Carrier identity
| USDOT Number | 2019948 |
|---|---|
| MC Number | MC-1635726 |
| Legal Name | RONALD B MASON |
| DBA Name | MASON MECHANICAL SERVICES LLC |
| Entity Type | — |
| Phone | 5712332585 |
| Address | 4538 TIMBERY DR, Jefferson, MD, 21755 |
Status
Authority & safety
| Operating Status | Active |
|---|---|
| Operation Type | Interstate |
| Safety Rating | None on record — most carriers have not received a formal FMCSA safety rating. |
| Hazmat Flag | false |
Safety ratings: S = Satisfactory, C = Conditional, U = Unsatisfactory. A carrier with no rating has not been through a full FMCSA compliance review — this is common and not itself a red flag.
Our scoring
Safety scores
| Unsafe Driving | 0 / 100 |
|---|---|
| Hours-of-Service Compliance | 0 / 100 |
| Driver Fitness | 0 / 100 |
| Controlled Substances & Alcohol | 0 / 100 |
| Vehicle Maintenance | 0 / 100 |
Scores are 0-100 rankings computed by us from public FMCSA inspection measures; higher = worse relative to peers. Not official CSA/BASIC percentiles. How these scores are computed.
Equipment
Fleet & operations
| Power Units (trucks) | 2 |
|---|---|
| Drivers | 2 |
| Recent Annual Mileage | 52,010 |
| Last MCS-150 Filing | 03-SEP-25 |
RONALD B MASON operates 2 power units — a larger fleet than 65% of carriers registered in MD.
Nearby
Other carriers in Jefferson, MD
- PROPERTY MANAGEMENT & MAINTENANCE — USDOT 1854528, 3 power units
- MICHAEL RODNEY HEARNE — USDOT 1975980, 2 power units
- MARK MONROE BUTLER SR — USDOT 2014123, 2 power units
- REAL CHANGE SYSTEMS INC — USDOT 1691417, 1 power units
- WOODWISE ARCHITECTURAL MILLWORK LLC — USDOT 1718285, 1 power units
Browse all carriers in Jefferson, MD or all MD carriers.