Is W B Mason Co Inc Safe? DOT 348981 – Safety Rating, Crashes & Violations

Q: What is the safety rating of W B Mason Co Inc?

W B Mason Co Inc has a safety rating of "Conditional" as of October 13, 1993, based on the most recent FMCSA compliance review.

Q: How many inspections has W B Mason Co Inc had?

W B Mason Co Inc has recorded 483 total inspections, with 43 out-of-service orders.

Q: Where is W B Mason Co Inc located?

W B Mason Co Inc is headquartered at 59 Centre St, Brockton, MA 02301.

This carrier is active with a Conditional safety rating — some safety deficiencies were noted.

W B Mason Co Inc is a registered motor carrier with the FMCSA under USDOT number 348981. The company operates from Brockton, MA and maintains an active operating status with 834 power units and 898 drivers on record.

Safety Rating

FMCSA Safety Rating

⚠ Conditional

Rated: October 13, 1993

W B Mason Co Inc holds a "Conditional" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that some safety deficiencies were found during the most recent compliance review conducted by FMCSA. View official FMCSA record →

Inspection Summary

All-time Inspections

All-time

483

Total

OOS

Driver OOS

Vehicle OOS

483 inspections indicates a high-volume, actively operating carrier.

OOS Rate8.90%

The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. 8.9% — below the national vehicle OOS average of ~21%.

Crash History

Crash Records

All-time

Total

Fatal

Injuries

Tow-Away

23 crashes reported. Review fatal and injury counts carefully alongside fleet size before engaging this carrier.

BASICS Safety Scores

BASICS Scores

Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories

0.4

Unsafe Driving

Measures violations related to speeding, reckless driving, and improper lane changes.

0.0

HOS Compliance

Tracks hours-of-service violations, including driving beyond legal limits without rest.

0.1

Driver Fitness

Reflects issues with driver qualifications, licenses, and medical certifications.

0.0

Controlled Substances

Captures drug and alcohol violations, including failed or refused tests.

2.1

Vehicle Maintenance

Reflects brake, tire, lighting, and other equipment-related inspection violations.

Scores above 65 (general freight) or 50 (passenger/hazmat) trigger an FMCSA Alert. Higher scores indicate more safety risk. National median is approximately 20–30 for active carriers.

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Carrier Insight

W B Mason Co Inc is a large motor carrier operating in Massachusetts. With 483 total inspections on record, the carrier has an out-of-service rate of 8.9%, which is below the national average of approximately 21%. 23 crashes have been reported. Review crash details alongside fleet size and inspection history before making hiring decisions.

A Conditional rating from the FMCSA indicates that W B Mason Co Inc has some safety deficiencies that need to be addressed. Shippers and brokers should review the BASICS scores carefully.

The company operates 834 power units and employs 898 drivers. This fleet size places it among the larger carriers in the FMCSA registry.

Frequently Asked Questions

What is USDOT Number 348981?

USDOT number 348981 is assigned to W B Mason Co Inc, an active motor carrier registered with the FMCSA, based in Brockton, MA.

What is the safety rating of W B Mason Co Inc?

W B Mason Co Inc has a safety rating of Conditional as of October 13, 1993.

How many inspections has W B Mason Co Inc had?

W B Mason Co Inc has recorded 483 total inspections with 43 out-of-service orders, representing an OOS rate of 8.90%.

Where is W B Mason Co Inc located?

W B Mason Co Inc is headquartered at 59 Centre St, Brockton, MA 02301.

What does "Not Rated" mean?

"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.

Is zero crashes always a good sign?

Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.

What is a normal OOS rate?

The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.

How often is FMCSA data updated?

FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 348981 · Last updated: 2026-03-09. View official FMCSA record →

W B Mason Co Inc (DOT# 348981) – FMCSA Carrier Profile