Preview 264,750 motor carriers — every carrier FMCSA lists as active with at least one power unit, plus carriers whose registration went inactive within the last three years (inferred from MCS-150 filing dates). The full load is in progress, so this is how far it has got. Sourced from the FMCSA Motor Carrier Census. Data as of 2026-09-21.

W B MASON CO INC

USDOT 348981
USDOT registration Active

Operating authority — FMCSA publishes no current status for this carrier. See FMCSA’s record.

Safety rating Conditional rated 1993-10-13 — 32 years ago; last reviewed 1993-06-21 · roadside inspected 2026-09-18
Hazardous materials Yes
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Roadside inspections
Last inspected
2026-09-18
Inspections
735
last three years
Violations recorded
476

Out-of-service orders lower is better

Inspections ending with a vehicle or driver ordered out of service by authorities. Between 20 September 2024 and 20 September 2026.

Vehicle 11.2% below the national average of 22.26% 32 of 286 vehicle inspections ended in an out-of-service order
Driver 2.6% below the national average of 6.67% 13 of 498 driver inspections ended in an out-of-service order

These rates use FMCSA’s own window and arithmetic, so they match this carrier’s FMCSA Company Snapshot. The national averages are the agency’s own, as of 31 July 2026.

Crashes
Last reported crash
2026-08-31
Crashes on file
173
Crashes with a fatality
7
Crashes with injuries
110
Crashes with a tow-away
156
Crashes on file, last 24 months
15

Crash counts are permanent and reach back decades. A crash on this record is not a finding of fault.

Insurance and operating authority

Required and on-file BI&PD liability amounts, cargo and surety bond filings, and the operating authorities this carrier holds.

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How this carrier compares Log in with your free account

Where this carrier sits among the others

A chart of the out-of-service rate across every carrier in the group, with this carrier marked on it and the margin of error around its own rate.

Drawn against carriers with more than 500 inspections, carriers based in Massachusetts, carriers running more than 500 power units and every carrier on file.

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57 of this carrier’s 735 roadside inspections on FMCSA’s rolling three-year file ended in an out-of-service order. Comparison groups are CarrierHelm’s, built from FMCSA’s published inspection counts, fleet sizes and state of domicile across the carriers we hold — see About the data for that scope.

“Readers should not draw conclusions about a carrier’s overall safety condition simply based on the data displayed in this system. Unless a motor carrier has received an UNSATISFACTORY safety rating under part 385 of title 49, Code of Federal Regulations, or has otherwise been ordered to discontinue operations by the Federal Motor Carrier Safety Administration, it is authorized to operate on the Nation’s roadways.” FAST Act §5223(d)(2)

Carrier details
Fleet and drivers
Power units
834
Trucks
834
Buses
0
Drivers
898
Drivers holding a CDL
161
What they run
Cargo authorised to carry
Operating range
Interstate, beyond 100 miles; Intrastate, beyond 100 miles
Carrier operation
Interstate
Operation classification
PRIVATE PROPERTY
Annual mileage reported
24,574,757
Mileage year
2025
Safety history
Safety rating date
1993-10-13
Last compliance review
1993-06-21
Review type
S safety review
Registration
Entity type
CORPORATION
First on file
1989-03-31
Carrier last updated its record
2025-12-11
City
BROCKTON
State
MA
ZIP
02301

More carriers in Brockton, MA

Data as of 2026-09-20 · The official FMCSA record · FMCSA safety profile · About this data