Arnold Zwerk & Sons Inc is an active interstate carrier based in Vassar, MI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 12 | 0 | 0 |
| Tractors | 12 | 0 | 0 |
| Trailers | 12 | 0 | 0 |
| Total Power Units | 12 | ||
Distinct vehicles · 24 mo
vs 12 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 74% | 93% | Around peer average |
| HOS Compliance | 91% | 98% | Worse than most peers |
| Driver Fitness | 90% | 97% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 73% | 93% | 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 | 1 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 1 | 1 | 1 |
| Jan 1, 2025 | 0 | 1 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 4 | 2 | 1 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 19, 2026 | MI | TRUCK TRACTOR | 0 | 0 |
| Oct 8, 2025 | MN | TRUCK TRACTOR | 4 | 0 |
| Jul 30, 2025 | MI | MOTOR COACH | 1 | 1 |
| Jun 20, 2025 | MI | TRUCK TRACTOR | 0 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.73 | — |
| HOS Compliance | 1 | 0.37 | — |
| Vehicle Maintenance | 2 | 4.00 | — |
| Driver Fitness | 1 | 1.25 | — |
| Controlled Substances | 0 | 0.00 | — |
Where they run
Inspected in 3 states. Top state MI accounts for 63% of activity. Activity outside home state (MI): 37%.
| Hours-of-Service Compliance | 2 | 0 | 0 |
| Driver Fitness | 1 | 1 | 1 |
| Unsafe Driving | 1 | 0 | 0 |
| Jun 4, 2025 |
| MI |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Mar 27, 2025 | MN | TRUCK TRACTOR | 1 | 0 |
| Oct 22, 2024 | MI | TRUCK TRACTOR | 2 | 1 |
| Apr 25, 2024 | IL | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Oct 8, 2025 | 3939ALRLI | Lighting - Tail lamp - Any inoperative | Vehicle Maintenance | — |
| Oct 8, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Oct 8, 2025 | 3953A3HOSPRNP | Driving beyond 11 hour driving limit in a 14-hour period. (Property carrying vehicle) - Nominal Violation | Hours-of-Service Compliance | — |
| Oct 8, 2025 | 3958A | HOS (Form) - Paper Log/Logging Programs Form and Manner | Hours-of-Service Compliance | — |
| Jul 30, 2025 | 38323A2LCDL | Endorsements - (CDL) - Operate a CMV without proper endorsements on operators license | Driver Fitness | Yes |
| Mar 27, 2025 | 39271AD | Driver - Using or equipping a CMV with a radar detector | Unsafe Driving | — |
| Oct 22, 2024 | 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 22, 2024 | 3963A1BALAC | Brake - Audible air leak from a brake chamber | Vehicle Maintenance | — |