Diamond S Trucks Inc is an active interstate carrier based in Mounds, OK.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 3 | 0 | 0 |
| Tractors | 3 | 0 | 0 |
| Trailers | 3 | 7 | 0 |
| Total Power Units | 3 | ||
Distinct vehicles · 24 mo
vs 3 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 99% | 99% | Worse than most peers |
| HOS Compliance | 98% | 99% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 97% | 98% | 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 | 2 | — | 6.67% |
| Vehicle | 0 | 4 | — | 22.26% |
| Hazmat | 0 | 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 | 17 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jan 13, 2026 | OK | TRUCK TRACTOR | 1 | 0 |
| Oct 6, 2025 | IN | TRUCK TRACTOR | 7 | 0 |
| Oct 2, 2025 | KS | TRUCK TRACTOR | 1 | 0 |
| Apr 8, 2025 | OK | TRUCK TRACTOR | 3 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 4 | 15.73 | — |
| HOS Compliance | 5 | 3.17 | — |
| Vehicle Maintenance | 3 | 20.33 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 7 states. Top state OK accounts for 40% of activity. Activity outside home state (OK): 60%.
+2 other states with fewer inspections
| 5 |
| 4 |
| Hours-of-Service Compliance | 6 | 1 | 2 |
| Unsafe Driving | 4 | 2 | 0 |
| Mar 14, 2025 |
| GA |
| TRUCK TRACTOR |
| 2 |
| 0 |
| Dec 30, 2024 | AR | TRUCK TRACTOR | 1 | 0 |
| Dec 13, 2024 | OK | TRUCK TRACTOR | 9 | 5 |
| Dec 4, 2024 | SC | TRUCK TRACTOR | 3 | 1 |
| Oct 10, 2024 | OK | TRUCK TRACTOR | 0 | 0 |
| Jul 31, 2024 | TX | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jan 13, 2026 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Oct 6, 2025 | 39311A1CSURR | Conspicuity Systems - Truck tractor upper rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 | Vehicle Maintenance | — |
| Oct 6, 2025 | 39311A1LCHL | Lighting - Lamps improper color height location. | Vehicle Maintenance | — |
| Oct 6, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Oct 6, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Oct 6, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Oct 6, 2025 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Oct 6, 2025 | 3939ALSLI | Lighting - Stop lamps - Any inoperative. | Vehicle Maintenance | — |
| Oct 2, 2025 | 3958F1HOSM | HOS (Manner) - Driver's record of duty status not current to the time shown for last change of duty status. Date and Time: | Hours-of-Service Compliance | — |
| Apr 8, 2025 | 3922SLLS4 | State/Local Laws - Speeding 15 or more miles per hour over the speed limit | Unsafe Driving | — |