DBA: Bader And Olson Cadogan Tate Seattle
Trefethen & Company Llc is an active interstate carrier based in Seattle, WA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 6 | 0 | 0 |
| Total Power Units | 6 | ||
Distinct vehicles · 24 mo
vs 6 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 77% | 85% | 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 | 0 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 8 | 2 | 0 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Aug 12, 2026 | WA | STRAIGHT TRUCK | 2 | 1 |
| Mar 6, 2026 | WA | STRAIGHT TRUCK | 4 | 0 |
| Nov 21, 2025 | WA | STRAIGHT TRUCK | 0 | 0 |
| Oct 30, 2025 | WA | STRAIGHT TRUCK | 0 | 0 |
Carriers that share an officer, phone, or email with this DOT.
Shared phone · 1
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 3.50 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 2 | 4.87 | — |
| Driver Fitness | 1 | 2.72 | — |
| Controlled Substances | 0 | 0.00 | — |
Inspected in 2 states. Top state WA accounts for 86% of activity. Activity outside home state (WA): 14%.
| Driver Fitness |
| 1 |
| 1 |
| 1 |
| Unsafe Driving | 1 | 1 | 0 |
| Aug 23, 2025 |
| WY |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Nov 6, 2024 | WA | STRAIGHT TRUCK | 4 | 0 |
| May 14, 2024 | WA | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Aug 12, 2026 | 39111B5LNCDLNVL | License - Operate a CMV without a valid operators license issued by one State or jurisdiction | Driver Fitness | Yes |
| Aug 12, 2026 | 3922SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Unsafe Driving | — |
| Mar 6, 2026 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Mar 6, 2026 | 3939ALFTSI | Lighting - Front - Turn signal - inoperative | Vehicle Maintenance | — |
| Mar 6, 2026 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Mar 6, 2026 | 3939ALPL | Lighting - Parking lamp(s) inoperative | Vehicle Maintenance | — |
| Nov 6, 2024 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Nov 6, 2024 | 39360C | Windshield - Damaged or Discolored | Vehicle Maintenance | — |
| Nov 6, 2024 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Nov 6, 2024 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |