Diama-Shield is an active interstate carrier based in Troy, MI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 27 | 27 | 0 |
| Total Power Units | 27 | ||
Distinct vehicles · 24 mo
vs 27 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 93% | 98% | Worse than most peers |
| Driver Fitness | 81% | 96% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 53% | 91% | 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 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Apr 1, 2026 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 9 | 1 | 1 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 25, 2026 | FL | STRAIGHT TRUCK | 0 | 0 |
| Jan 22, 2026 | NY | STRAIGHT TRUCK | 2 | 1 |
| Nov 15, 2025 | NM | STRAIGHT TRUCK | 0 | 0 |
| Oct 23, 2025 | NM | TRUCK TRACTOR | 0 | 0 |
| Oct 21, 2025 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 5 | 0.95 | — |
| Vehicle Maintenance | 5 | 1.92 | — |
| Driver Fitness | 2 | 0.50 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 17 states. Top state CA accounts for 15% of activity. Activity outside home state (MI): 100%.
+12 other states with fewer inspections
| Hours-of-Service Compliance | 6 | 2 | 1 |
| Driver Fitness | 3 | 2 | 2 |
| OR |
| STRAIGHT TRUCK |
| 0 |
| 0 |
| Sep 30, 2025 | NY | STRAIGHT TRUCK | 2 | 0 |
| Jul 24, 2025 | CO | STRAIGHT TRUCK | 0 | 0 |
| Jun 22, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Jun 22, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| May 14, 2025 | IA | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jan 22, 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 |
| Jan 22, 2026 | 39381H | Horn - Inoperative or defective | Vehicle Maintenance | — |
| Sep 30, 2025 | 39530B1ELDDFR | HOS (ELD) - Driver failing to review records and certify the accuracy of the information. | Hours-of-Service Compliance | — |
| Sep 30, 2025 | 3958EHOSPD | HOS (Property) - No driver may make a false report in connection with a duty status. Explain | Hours-of-Service Compliance | — |
| Feb 11, 2025 | 39381 | Horn inoperative | Vehicle Maintenance | — |
| Feb 11, 2025 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |
| Feb 11, 2025 | 39395A | No/discharged/unsecured fire extinguisher | Vehicle Maintenance | — |
| Jan 16, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Nov 25, 2024 | 3958 | Record of Duty Status violation (general/form and manner) | Hours-of-Service Compliance | — |
| Sep 23, 2024 | 39522H4 | Driver failed to maintain supply of blank drivers records of duty status graph-grids | Hours-of-Service Compliance | — |