A-1 Transit Corporation is an active interstate carrier based in Marathon, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 132 | 0 | 0 |
| Tractors | 266 | 0 | 0 |
| Trailers | 1,143 | 0 | 0 |
| Total Power Units | 398 | ||
Distinct vehicles · 24 mo
vs 398 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 | 59% | 91% | Around peer average |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 82% | 96% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 94% | 90% | 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 | 19 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 1 | 1 |
| Jul 1, 2025 | 0 | 2 | 1 | 2 |
| Jan 1, 2025 | 0 | 0 | 2 | 2 |
| Oct 1, 2024 | 0 | 0 | 1 | 1 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 58 | 24 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 4, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Feb 27, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Feb 23, 2026 | IL | TRUCK TRACTOR | 0 | 0 |
| Feb 3, 2026 | WI | STRAIGHT TRUCK | 0 | 0 |
| Feb 2, 2026 | FL | TRUCK TRACTOR |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 19 | 0.31 | — |
| HOS Compliance | 1 | 0.00 | — |
| Vehicle Maintenance | 36 | 4.35 | — |
| Driver Fitness | 2 | 0.09 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 7 states. Top state WI accounts for 44% of activity. Activity outside home state (WI): 56%.
+2 other states with fewer inspections
| 24 |
| Unsafe Driving | 20 | 12 | 0 |
| Driver Fitness | 2 | 2 | 2 |
| Hours-of-Service Compliance | 1 | 0 | 0 |
| 3 |
| 1 |
| Jan 12, 2026 | WI | TRUCK TRACTOR | 1 | 0 |
| Jan 8, 2026 | WI | TRUCK TRACTOR | 1 | 1 |
| Dec 17, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Dec 3, 2025 | WI | TRUCK TRACTOR | 3 | 3 |
| Nov 24, 2025 | FL | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 2, 2026 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Feb 2, 2026 | 3939ALSLI | Lighting - Stop lamps - Any inoperative. | Vehicle Maintenance | — |
| Feb 2, 2026 | 3939ALTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | Vehicle Maintenance | Yes |
| Jan 12, 2026 | 39360C | Windshield - Damaged or Discolored | Vehicle Maintenance | — |
| Jan 8, 2026 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Dec 3, 2025 | 393100BC | Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Vehicle Maintenance | Yes |
| Dec 3, 2025 | 393124CCCP | Concrete Pipe - Improper blocking | Vehicle Maintenance | Yes |
| Dec 3, 2025 | 393124DCCP | Concrete Pipe - Improper arrangement of the load | Vehicle Maintenance | Yes |
| Nov 10, 2025 | 3922INAT | Driver- Inattentive or Distracted Driving | Unsafe Driving | — |
| Nov 10, 2025 | 3939ALTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Vehicle Maintenance | — |