Diamond Grading Inc is an active intrastate non-hazmat carrier based in Riverside, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 4 | 0 | 0 |
| Tractors | 4 | 0 | 0 |
| Trailers | 4 | 0 | 0 |
| Total Power Units | 4 | ||
Distinct vehicles · 24 mo
vs 4 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 | 0% | 0% | Better 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 | 98% | 99% | 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 | 13 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 21 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 26, 2026 | CA | STRAIGHT TRUCK | 4 | 4 |
| Jan 14, 2026 | CA | STRAIGHT TRUCK | 9 | 5 |
| Jul 11, 2025 | CA | STRAIGHT TRUCK | 4 | 4 |
| May 27, 2025 | CA | STRAIGHT TRUCK | 0 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 1
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 6 | 10.54 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
Where they run
Inspected in 1 state. Top state CA accounts for 100% of activity. Activity outside home state (CA): 0%.
| 13 |
| 0 |
| May 27, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Sep 10, 2024 | CA | STRAIGHT TRUCK | 1 | 1 |
| Aug 29, 2024 | CA | STRAIGHT TRUCK | 1 | 1 |
| Aug 21, 2024 | CA | STRAIGHT TRUCK | 1 | 1 |
| May 10, 2024 | CA | STRAIGHT TRUCK | 1 | 1 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 26, 2026 | 39311A1LTNRV | Lighting - Turn signal - Any missing not on the rearmost vehicle. | Vehicle Maintenance | Yes |
| Feb 26, 2026 | 393207ASAPPAS | Suspension - Axle positioning part cracked/broken/loose/missing resulting in axle shift | Vehicle Maintenance | Yes |
| Feb 26, 2026 | 39370DCDTSDD | Coupling - Trailer safety devices wire/chain damaged. | Vehicle Maintenance | Yes |
| Feb 26, 2026 | 3965BHWSL | Hubs - Wheel seal leaking | Vehicle Maintenance | Yes |
| Jan 14, 2026 | 39311A1LCL | Lighting - Clearance lamp(s) missing | Vehicle Maintenance | — |
| Jan 14, 2026 | 393201AFRMS | Frame - Cracked/loose/sagging/broken frame member permitting shifting of body | Vehicle Maintenance | Yes |
| Jan 14, 2026 | 393205CWR | Wheel/Rim - Wheel fasteners loose/missing/ineffective/broken. | Vehicle Maintenance | — |
| Jan 14, 2026 | 393207ASAPPAS | Suspension - Axle positioning part cracked/broken/loose/missing resulting in axle shift | Vehicle Maintenance | Yes |
| Jan 14, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Jan 14, 2026 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |