Mason Trucking Co Inc is an active interstate carrier based in Aberdeen, WA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 18 | 0 | 0 |
| Tractors | 18 | 0 | 0 |
| Trailers | 30 | 0 | 0 |
| Total Power Units | 18 | ||
Distinct vehicles · 24 mo
vs 18 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 78% | 90% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 77% | 94% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 84% | 93% | Worse than most peers |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 1 | — | 6.67% |
| Vehicle | 0 | 17 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
| Apr 1, 2025 | 0 | 1 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 78 | 23 | 22 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Dec 22, 2025 | WA | STRAIGHT TRUCK | 1 | 1 |
| Dec 11, 2025 | WA | STRAIGHT TRUCK | 0 | 0 |
| Dec 3, 2025 | WA | TRUCK TRACTOR | 0 | 0 |
| Nov 7, 2025 | OR | TRUCK TRACTOR | 1 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 1.37 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 27 | 10.11 | — |
| Driver Fitness | 2 | 0.14 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state WA accounts for 93% of activity. Activity outside home state (WA): 7%.
| Driver Fitness | 2 | 0 | 1 |
| Unsafe Driving | 2 | 1 | 0 |
| Oct 30, 2025 |
| WA |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Oct 28, 2025 | WA | STRAIGHT TRUCK | 4 | 0 |
| Oct 24, 2025 | WA | TRUCK TRACTOR | 2 | 1 |
| Oct 22, 2025 | WA | TRUCK TRACTOR | 0 | 0 |
| Oct 16, 2025 | WA | TRUCK TRACTOR | 4 | 1 |
| Sep 23, 2025 | WA | TRUCK TRACTOR | 1 | 1 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Dec 22, 2025 | 3939ALTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | Vehicle Maintenance | Yes |
| Nov 7, 2025 | 393207FSLAS | Suspension - Leaking 3 PSI in 5 minutes | Vehicle Maintenance | — |
| Oct 28, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Oct 28, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Oct 28, 2025 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Oct 28, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |
| Oct 24, 2025 | 393110B2IIC | Cargo - Insufficient tiedowns (w/o headerboard/blocking) for article(s) of cargo longer than 5 feet and no more than 10 feet | Vehicle Maintenance | Yes |
| Oct 24, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Oct 16, 2025 | 3922SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other | Unsafe Driving | — |
| Oct 16, 2025 | 393203BCBP | Cab and Body Parts - Cab/body mounts loose/broken/missing | Vehicle Maintenance | — |