W B MASON CO INC
Based in BROCKTON, Massachusetts, W B MASON CO INC is a motor carrier registered under USDOT 348981. The company operates 834 power units and employs 898 drivers. Their vehicle out-of-service rate of 0.0% is below the national average of 20.7%, suggesting relatively well-maintained equipment. The carrier is authorized for hazardous materials transportation. The carrier has only 0% of required liability insurance on file — a coverage gap of $750K. Our composite safety score rates this carrier at 50/100, indicating a mixed safety profile that warrants closer review.
Insurance Coverage Gap
This carrier has $0 in liability insurance on file but $750K is required — a shortfall of $750K (0% of required coverage).
Company Details
- Legal Name
- W B MASON CO INC
- USDOT Number
- 348981
- Entity Type
- CARRIER
- Address
- 59 CENTRE ST
BROCKTON, MA 02301 - Phone
- (617) 510-7830
- Carrier Operation
- Interstate
- Last MCS-150 Update
- December 11, 2025
Inspection Record
| Type | Total | OOS | Rate | Nat'l Avg |
|---|---|---|---|---|
| Vehicle | 1 | 0 | 0.0% | 20.7% |
| Driver | 1 | 0 | 0.0% | 5.5% |
| Hazmat | 0 | 0 | 0.0% | 4.5% |
Crash History
BASICs Safety Scores
Higher percentile = worse safety performance. Scores above 75% may trigger FMCSA intervention.
Location
59 CENTRE ST, BROCKTON, MA 02301
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Frequently Asked Questions
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Source: FMCSA Safety and Fitness Electronic Records (SAFER) System