Jon L Zemlo is an active intrastate non-hazmat carrier based in Oakfield, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 3 | 0 | 0 |
| Tractors | 2 | 0 | 0 |
| Trailers | 61 | 0 | 0 |
| Total Power Units | 5 | ||
Distinct vehicles · 24 mo
vs 5 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 | 92% | 95% | Worse 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 | 89% | 95% | 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 | 1 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 1 state. Top state WI accounts for 100% of activity. Activity outside home state (WI): 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 | 4 | 0 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Oct 11, 2025 | WI | STRAIGHT TRUCK | 5 | 1 |
| Sep 20, 2024 | WI | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Oct 11, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 3.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 1 | 10.50 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 1 |
| Unsafe Driving | 1 | 0 | 0 |
| 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 |
| — |
| Oct 11, 2025 | 39343DBMA | Brake - Breakaway not attached to the towing vehicle | Vehicle Maintenance | Yes |
| Oct 11, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Oct 11, 2025 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Oct 11, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |