M A Wolf Trucking Inc is an active interstate carrier based in Slinger, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 9 | 0 | 0 |
| Tractors | 26 | 1 | 0 |
| Trailers | 15 | 0 | 0 |
| Total Power Units | 57 | ||
Distinct vehicles · 24 mo
vs 57 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 | 30% | 91% | 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 | 36% | 87% | 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 | 0 | — | 6.67% |
| Vehicle | 0 | 0 | — | 22.26% |
| Hazmat | 8 | 0 | 0.00% |
| 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 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jan 12, 2026 | KS | TRUCK TRACTOR | 0 | 0 |
| Jan 7, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Dec 23, 2025 | WI | STRAIGHT TRUCK | 3 | 0 |
| Oct 22, 2025 | WI | TRUCK TRACTOR | 2 | 0 |
| Oct 2, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.15 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 6 | 1.77 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state WI accounts for 86% of activity. Activity outside home state (WI): 14%.
| 0 |
| 0 |
| Hazardous Materials Compliance | 2 | 1 | 0 |
| Unsafe Driving | 1 | 0 | 0 |
| WI |
| TRUCK TRACTOR |
| 1 |
| 0 |
| Sep 11, 2025 | WI | STRAIGHT TRUCK | 2 | 0 |
| Aug 20, 2025 | WI | STRAIGHT TRUCK | 0 | 0 |
| Apr 19, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Mar 24, 2025 | KS | TRUCK TRACTOR | 0 | 0 |
| Nov 6, 2024 | WI | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Dec 23, 2025 | 172602CHMER | HM (Emergency Response) - Improper maintenance/accessibility of emergency response information | Hazardous Materials Compliance | — |
| Dec 23, 2025 | 17324B4HMGP | HM (General Packaging) - HM residue adhering to outside of the package | Hazardous Materials Compliance | — |
| Dec 23, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Oct 22, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |
| Oct 22, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Oct 2, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |
| Sep 11, 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 | — |
| Sep 11, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Oct 22, 2024 | 3939ALLPL | Lighting - License plate lamp inoperative | Vehicle Maintenance | — |
| May 14, 2024 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |