Simpson Dirtworx is an active interstate carrier based in Lyndonville, VT.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 3 | 0 | 0 |
| Tractors | 1 | 0 | 0 |
| Trailers | 3 | 0 | 0 |
| Total Power Units | 4 | ||
Distinct vehicles · 24 mo
vs 4 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 | 75% | 83% | 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 | 0 | — | 6.67% |
| Vehicle | 0 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 6 | 2 | 2 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 5, 2026 | VT | STRAIGHT TRUCK | 1 | 0 |
| Jan 28, 2026 | VT | STRAIGHT TRUCK | 0 | 0 |
| Nov 26, 2025 | VT | STRAIGHT TRUCK | 0 | 0 |
| Sep 17, 2025 | VT | TRUCK TRACTOR | 1 | 0 |
| Sep 12, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 5 | 5.60 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state VT accounts for 91% of activity. Activity outside home state (VT): 9%.
| VT |
| STRAIGHT TRUCK |
| 1 |
| 1 |
| Aug 26, 2025 | VT | TRUCK TRACTOR | 0 | 0 |
| Aug 22, 2025 | VT | TRUCK TRACTOR | 1 | 1 |
| Jun 16, 2025 | VT | STRAIGHT TRUCK | 0 | 0 |
| Apr 11, 2025 | VT | TRUCK TRACTOR | 0 | 0 |
| Sep 6, 2024 | VT | STRAIGHT TRUCK | 2 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 5, 2026 | 3939ALLPL | Lighting - License plate lamp inoperative | Vehicle Maintenance | — |
| Sep 17, 2025 | 39387AFPLA | Flag - Required flag(s) - any missing flag on a projecting load when more than one is required | Vehicle Maintenance | — |
| Sep 12, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Aug 22, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Sep 6, 2024 | 39345B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | Vehicle Maintenance | — |
| Sep 6, 2024 | 3963A1BL | Brake system pressure loss | Vehicle Maintenance | — |