Sowinski Trucking Llc is an active interstate carrier based in Rhinelander, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 30 | 0 | 0 |
| Tractors | 30 | 0 | 0 |
| Trailers | 60 | 0 | 0 |
| Total Power Units | 30 | ||
Distinct vehicles · 24 mo
vs 30 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 90% | 95% | Worse than most peers |
| HOS Compliance | 97% | 99% | Worse than most peers |
| Driver Fitness | 83% | 96% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 78% | 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 | 3 | — | 6.67% |
| Vehicle | 0 | 7 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Oct 1, 2025 | 0 | 0 | 1 | 1 |
| Jul 1, 2025 | 0 | 0 | 2 | 2 |
| Jan 1, 2025 | 0 | 0 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 35 | 13 | 8 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 24, 2026 | IL | TRUCK TRACTOR | 0 | 0 |
| Feb 3, 2026 | MN | TRUCK TRACTOR | 4 | 0 |
| Feb 2, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Jan 29, 2026 | FL | TRUCK TRACTOR | 0 | 0 |
| Jan 13, 2026 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 8 | 2.69 | — |
| HOS Compliance | 12 | 1.30 | — |
| Vehicle Maintenance | 12 | 7.50 | — |
| Driver Fitness | 1 | 0.18 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 17 states. Top state IL accounts for 26% of activity. Activity outside home state (WI): 93%.
+12 other states with fewer inspections
| Hours-of-Service Compliance |
| 19 |
| 9 |
| 2 |
| Unsafe Driving | 9 | 6 | 0 |
| Driver Fitness | 1 | 1 | 1 |
| IL |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Jan 8, 2026 | CO | TRUCK TRACTOR | 0 | 0 |
| Dec 19, 2025 | KS | TRUCK TRACTOR | 0 | 0 |
| Dec 1, 2025 | MO | TRUCK TRACTOR | 0 | 0 |
| Nov 17, 2025 | OH | TRUCK TRACTOR | 0 | 0 |
| Nov 16, 2025 | IN | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 3, 2026 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Feb 3, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Feb 3, 2026 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
| Feb 3, 2026 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |
| Nov 16, 2025 | 39524 | HOS (ELD) - ELD Form and Manner | Hours-of-Service Compliance | — |
| Oct 19, 2025 | 39311A1CSLRR | Conspicuity Systems - Truck tractor lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 | Vehicle Maintenance | — |
| Oct 18, 2025 | 3958E | False report of drivers record of duty status | Hours-of-Service Compliance | Yes |
| Oct 14, 2025 | 3922SLLS4 | State/Local Laws - Speeding 15 or more miles per hour over the speed limit | Unsafe Driving | — |
| Oct 14, 2025 | 39355C1B | Air Brake - Truck-tractor manufactured on or after March 1 1997 not equipped with an ABS system. System does not function or indicates a fault. | Vehicle Maintenance | — |
| Oct 14, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |