Carrierintel
WN

WILLIAM N MASON INC

Carrierintel Safety Score: 54/100. 36 inspection violations in 12 months. Last inspected Oct 2026.

DOT 227340MC 407667ActiveMotor CarrierInterstateSENTRY SELECT INSURANCE COMPANYBALTIMORE, MD

COMPANY

Authority since
2019-06-03
MCS-150
2026-05-06 · 278,770 mi (2024)
Fleet
15 units · 77 trailers · 11 drivers
Annual mileage (VMT)
278,770 mi (2024)

ADDRESS

Physical
3510 WILKENS AVE
BALTIMORE, MD 21229
Mailing
Same as physical

CONTACT

Phone
4105252288
Email
bill@masoninc.com

OFFICERS

Primary Officer
WILLIAM N. MASON
Title
PRESIDENT

OPERATION & CARGO

Operation classification
Authorized For Hire
Specialty
Auto Transport
Cargo types
5
General FreightMotor VehiclesBuilding MaterialsMachinery, Large ObjectsConstruction
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
304 mo
Active authority
INSURANCE
1 active
SENTRY SELECT INSURANCE COMPANY
RISK GRADE
Moderate Risk
2 risk factors · 2 strengths
OOS RATE
26.7%
8 / 30 inspections

Carrierintel Safety Score

Rolling 12-month heuristic based on inspections, OOS, violations, crashes & fatalities. Not the official FMCSA SMS score.

54
out of 100
Below Average
Markers: OOS inspection Crash Fatality

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Declared (MCS-150)
15 power units
Unique power units seen
7
+ 5 trailer VINs
+ 2 unclassified VINs
Inspections
9
Discrepancy
0.5x

Moderate Risk

2 risk factors · 2 strengths · 4 data points

SAFETY PERFORMANCE

Crash Record
27 crashes · 0 fatal · 9 with injuries · 26 tow-away
Clean Inspection Rate
73% — 22 clean of 30 inspections
Out-of-Service Rate
26.7% — driver OOS 1 insp., vehicle OOS 8 insp.

COMPLIANCE & AUTHORITY

USDOT Registration
Status: Active
Operating Authority
Active: Motor Carrier
Out-of-service orders
None on record
Authority Events
21 historical event(s) on file
MCS-150 Filing
Last filed 2026-05-06

INSURANCE

Active Coverage
1 policy(ies) on file · total max coverage $750,000

SUMMARY

High OOS rate 24% (last 24 mo)
3.0 violations per inspection
Low crash rate (3.3 per 100 trucks/yr)
Active insurance on file

INDUSTRY REPORTS

  • ELD Tampering — Carriers cited for ELD tampering under 49 CFR § 395.8(e), by carrier and state.
  • Top Violations — The ten most-cited FMCSA violation codes of the last 30 days.
  • Phantom Fleets — Declared power units against the vehicles seen at roadside inspections.
  • English Proficiency — Carriers whose drivers were cited under 49 CFR § 391.11(b)(2), by carrier and state.
  • Methodology — Where the data comes from and how the Safety Score and Risk Grade are built.

Other motor carriers in Baltimore, MD

All carriers in Baltimore, MD →

More carriers in Maryland

All Maryland carriers →Browse every state →