Unimark Lowboy Transportation Llc is an active interstate carrier based in Pleasant Prairie, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 130 | 0 | 0 |
| Tractors | 0 | 130 | 0 |
| Trailers | 15 | 85 | 0 |
| Total Power Units | 130 | ||
Distinct vehicles · 24 mo
vs 130 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 75% | 92% | Worse than most peers |
| HOS Compliance | 91% | 98% | Worse than most peers |
| Driver Fitness | 59% | 96% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 37% | 88% | Around peer average |
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 | 6 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 2 | 2 |
| Oct 1, 2025 | 0 | 0 | 1 | 1 |
| Jul 1, 2025 | 3 | 7 | 5 | 5 |
| Apr 1, 2025 | 0 | 0 | 1 | 1 |
| Jan 1, 2025 | 0 | 0 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 23 | 10 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 11, 2026 | US | STRAIGHT TRUCK | 0 | 0 |
| Mar 10, 2026 | US | TRUCK TRACTOR | 0 | 0 |
| Feb 26, 2026 | US | STRAIGHT TRUCK | 0 | 0 |
| Feb 17, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Feb 17, 2026 | NM |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 17 | 0.92 | — |
| HOS Compliance | 7 | 0.27 | — |
| Vehicle Maintenance | 14 | 2.58 | — |
| Driver Fitness | 1 | 0.06 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 28 states. Top state OH accounts for 14% of activity. Activity outside home state (WI): 100%.
+23 other states with fewer inspections
| Oct 1, 2024 |
| 0 |
| 3 |
| 2 |
| 2 |
| Jul 1, 2024 | 0 | 0 | 2 | 2 |
| 9 |
| Unsafe Driving | 18 | 8 | 0 |
| Hours-of-Service Compliance | 11 | 3 | 0 |
| Driver Fitness | 1 | 0 | 0 |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Jan 20, 2026 | OH | TRUCK TRACTOR | 0 | 0 |
| Jan 13, 2026 | NC | TRUCK TRACTOR | 0 | 0 |
| Jan 8, 2026 | AR | TRUCK TRACTOR | 0 | 0 |
| Jan 8, 2026 | US | TRUCK TRACTOR | 0 | 0 |
| Jan 5, 2026 | CT | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Dec 1, 2025 | 39111B2Z | Border Zone - Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. | Driver Fitness | — |
| Nov 20, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |
| Nov 20, 2025 | 3922SLLS4 | State/Local Laws - Speeding 15 or more miles per hour over the speed limit | Unsafe Driving | — |
| Oct 9, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Oct 9, 2025 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Oct 9, 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 |
| Oct 9, 2025 | 3963A1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Vehicle Maintenance | Yes |
| Aug 13, 2025 | 3958EHOSPDOOS | HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain: | Hours-of-Service Compliance | — |
| Jul 23, 2025 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Jul 22, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |