Diamond Transportation System Inc is an active interstate carrier based in Racine, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 59 | 0 | 0 |
| Tractors | 4 | 55 | 0 |
| Trailers | 100 | 4 | 0 |
| Total Power Units | 59 | ||
Distinct vehicles · 24 mo
vs 59 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 | 72% | 92% | Around peer average |
| HOS Compliance | 72% | 97% | Around peer average |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 61% | 89% | 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 | 6 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 1 | 1 |
| Apr 1, 2025 | 0 | 2 | 1 | 1 |
| Jan 1, 2025 | 0 | 0 | 2 | 2 |
| Oct 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 32 | 15 | 10 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 16, 2026 | CO | TRUCK TRACTOR | 1 | 0 |
| Mar 7, 2026 | OH | TRUCK TRACTOR | 0 | 0 |
| Mar 5, 2026 | MD | TRUCK TRACTOR | 0 | 0 |
| Mar 4, 2026 | OH | TRUCK TRACTOR | 0 | 0 |
| Feb 13, 2026 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 9 | 0.85 | — |
| HOS Compliance | 2 | 0.05 | — |
| Vehicle Maintenance | 20 | 3.77 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 27 states. Top state AR accounts for 11% of activity. Activity outside home state (WI): 100%.
+22 other states with fewer inspections
| Unsafe Driving | 9 | 2 | 0 |
| Hours-of-Service Compliance | 3 | 0 | 0 |
| ND |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Feb 11, 2026 | NM | TRUCK TRACTOR | 2 | 1 |
| Feb 5, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Jan 23, 2026 | TN | TRUCK TRACTOR | 0 | 0 |
| Jan 15, 2026 | TN | TRUCK TRACTOR | 0 | 0 |
| Dec 11, 2025 | OH | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 16, 2026 | 39524 | HOS (ELD) - ELD Form and Manner | Hours-of-Service Compliance | — |
| Feb 11, 2026 | 39345PC | Brake Tubing and Hose Adequacy - Connections to Power Unit | Vehicle Maintenance | Yes |
| Feb 11, 2026 | 3939TS | Inoperative turn signal | Vehicle Maintenance | — |
| Dec 10, 2025 | 3939TS | Inoperative turn signal | Vehicle Maintenance | Yes |
| Sep 10, 2025 | 39355C1B | Air Brake - Truck-tractor manufactured on or after March 1 1997 not equipped with an ABS system. System does not function or indicates a fault. | Vehicle Maintenance | — |
| Sep 10, 2025 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Sep 10, 2025 | 3963A1BALAC | Brake - Audible air leak from a brake chamber | Vehicle Maintenance | — |
| Aug 19, 2025 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |
| Aug 19, 2025 | 39522H2ELDNISDT | HOS (ELD) Driver failing to have instruction sheet describing the data transfer mechanisms supported by the ELD and step-by-step instructions for the driver to pr | Hours-of-Service Compliance | — |
| Aug 19, 2025 | 39522H4ELDBRODS | HOS (ELD) - In-Vehicle Information - Failing to have a supply of blank driver's records of duty status graph-grids sufficient to record the driver's duty status a | Hours-of-Service Compliance | — |