W B MASON CO INC
AUTHORIZEDUSDOT
348981
MC Number
N/A
Fleet Size
834
Total Drivers
898
FMCSA-derived snapshot updated: October 11, 2026. This is not a real-time record; verify critical authority, insurance and safety details directly with FMCSA.
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Safety overview
W B MASON CO INC is a large interstate motor carrier based in BROCKTON, Massachusetts, operating 834 power units with 898 drivers. CarrierOwl is currently validating BASIC percentile display against the official FMCSA SMS portal; use the inspection, out-of-service, crash, authority, and insurance data below as the primary public safety indicators on this page. Their driver out-of-service rate of 2.6% comes in under the 6.7% national average. They have 14 crashes on file (1 fatal, 8 with injuries). FMCSA records show 507 inspections for this carrier.
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BASIC scores
Under reviewCarrierOwl is validating BASIC percentile calculations against the official FMCSA SMS portal. Until that review is complete, use FMCSA directly for current BASIC percentiles and use the inspection, out-of-service, crash, authority, and insurance data on this page as supporting indicators.
BASIC percentile display is temporarily paused while we validate CarrierOwl's methodology against the official FMCSA SMS portal.
Out-of-service rates vs. national average
An out-of-service order means the driver or vehicle was pulled from operation during a roadside inspection.
For reference, the average driver OOS rate in Massachusetts is 15.5% and the average vehicle OOS rate is 27.8% across 39,504 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Private (Property)
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
Inspections
507
Total
63%
Driver %
Insurance on file
CarrierOwl's current public FMCSA filing snapshot returned no matching insurance rows. This does not prove that no private coverage exists; verify current requirements and filings directly with FMCSA and the carrier.
Crash history
14
Total Crashes
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Frequently asked questions
Is W B MASON CO INC authorized to operate?
CarrierOwl's FMCSA-derived snapshot for W B MASON CO INC (USDOT #348981) shows "AUTHORIZED" status. The snapshot lists them as an interstate carrier. Verify the current official record with FMCSA before booking a load.
What is W B MASON CO INC's safety record?
W B MASON CO INC has 507 inspections in CarrierOwl's current imported snapshot and 14 matching crashes. They do not show a formal FMCSA safety rating in CarrierOwl's current data. A zero result is limited to the dataset and snapshot window. Verify current BASIC percentiles and crash information directly with FMCSA before relying on them.
How many trucks does W B MASON CO INC operate?
W B MASON CO INC operates 834 power units with 898 drivers on file. That puts them in the large carrier category by FMCSA standards.
Does W B MASON CO INC transport hazardous materials?
No. W B MASON CO INC does not have a hazardous materials flag in the FMCSA database.
Where is W B MASON CO INC located?
W B MASON CO INC is based in BROCKTON, Massachusetts at 59 CENTRE ST, 02301. Phone: (617) 510-7830.
What are W B MASON CO INC's out-of-service rates?
W B MASON CO INC's driver out-of-service rate is 2.6%, compared with the 6.7% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record. Their vehicle out-of-service rate is 11.3%, compared with the 23.4% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record.