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Freight Carrier · Baltimore, MD

WILLIAM N MASON INC

3510 WILKENS AVE · Baltimore, MD 21229

Authorized: Property
(410) 525-2288 Tap to call
  • MC #407667
  • USDOT #227340 USDOT Active
  • 15
    Power Units
  • 11
    Drivers
  • Carrier
    Entity Type

About this carrier

WILLIAM N MASON INC is a Baltimore, MD freight carrier that is authorized for property in the state of Maryland. This company has 15 truck(s) in their fleet and 11 truck drivers. Their motor carrier number is MC-407667 and their USDOT number is 227340.

Sourced from FMCSA SAFER · last filed 05/06/2026 · last updated May 28, 2026.

Carrier Details

  • Operating Status AUTHORIZED FOR Property
  • MCS-150 Filed 05/06/2026
  • MCS-150 Mileage 278,770 (2024)

Authority & Operations

Operation Classification
  • Authorized for Hire
Carrier Operation
  • Interstate

Cargo Authorized

  • General Freight
  • Building Materials
  • Machinery, Large Objects

Operating Territory

Map of states where this carrier has roadside inspections Maryland — 14 inspections (past 24 months) Maryland — 14 inspections (past 24 months) Virginia — 4 inspections (past 24 months) Connecticut — 1 inspection (past 24 months) Delaware — 1 inspection (past 24 months)

Inspection activity   Inspected in 4 states over the past 24 months: MD (14), VA (4), CT (1), DE (1). Home base: Baltimore, Maryland.

Safety Record

5 Severe Violations Updated 1 min ago

Crashes (24 mo)

  • 0
    Fatal
  • 0
    Injury
  • 2
    Tow
  • 2
    Total

Behavior Categories (BASICs)

CategoryMeasureViolations Unsafe Driving 1.86 2 Crash Indicator Not Public — Hours of Service 0.03 1 Vehicle Maintenance 6.33 9 Drugs / Alcohol 0 0 Hazmat Not Public — Driver Fitness 0 0

Inspection Summary

  • 20
    Total
  • 10
    Clean
  • 10
    With violations

24-month window ending May 15, 2026

Violations Cited 20 unique codes

Critical 4

  • 393.75(a)Flat tire or fabric exposed1× OOS×1 SW 8
  • 393.75(a)(2)Tire-tread and/or sidewall separation1× SW 8
  • 393.207A-STCBSuspension - Suspension connecting rod or tracking component assembly (including spring leaves used as a suspension connecting rod) or any part used for attaching the same to the vehicle frame or axle is cracked, loose, broken or missing1× OOS×1 SW 7
  • 393.106D-CCargo - Insufficient aggregate working load limit for cargo transported1× OOS×1 SW 3

Unsafe Driving 2

  • 392.16-DDriver - Failed to use seat belt while operating a CMV1× SW 7
  • 392.16ADDriver - Failed to use seat belt while operating a CMV.1× SW 7

Vehicle Maintenance 13

  • 393.9A-LFTSILighting - Front - Turn signal - inoperative2× SW 6
  • 393.9A-LHWSLighting - Hazard warning signal(s) inoperative1× SW 6
  • 393.45B2-B-AIRAir Brake - Hose/tubing damaged or not secured1× SW 4
  • 393.45D-BAir Brake - Audible air leak at a proper connection1× SW 4
  • 393.47(e)Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt1× SW 4
  • 393.53B-BAir Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear1× SW 4
  • 393.55E-BAir Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 19981× SW 4
  • 396.5B-LLubrication - Oil or grease leak2× SW 3
  • 393.81-HHorn - Inoperative or defective1× SW 3
  • 393.9Inoperable Required Lamp1× SW 2
  • 393.9A-LLPLLighting - License plate lamp inoperative1× SW 2
  • 393.9A-LSMLLighting - Side marker lamp(s) inoperative1× SW 2
  • 393.78A-WSWashers - Inoperative washing system.1× SW 1

Hours of Service 1

  • 395.8(a)HOS (Form) - Paper Log/Logging Programs Form and Manner1× SW 1

Locations

Physical Address
WILLIAM N MASON INC
3510 WILKENS AVE
BALTIMORE, MD 21229
Mailing Address
Same as physical.

Location on Map

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