Diamond Plus Transportation Inc is an active interstate carrier based in Walnut, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 14 | 0 | 0 |
| Tractors | 14 | 0 | 0 |
| Trailers | 28 | 0 | 0 |
| Total Power Units | 14 | ||
Distinct vehicles · 24 mo
vs 14 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 70% | 93% | Around peer average |
| HOS Compliance | 88% | 95% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 89% | 94% | 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 | 6 | — | 6.67% |
| Vehicle | 0 | 24 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2026 | 0 | 1 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 80 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Sep 21, 2026 | CA | TRUCK TRACTOR | 0 | 0 |
| Sep 15, 2026 | US | TRUCK TRACTOR | 0 | 0 |
| Sep 9, 2026 | GA | TRUCK TRACTOR | 2 | 1 |
| Aug 26, 2026 | LA | TRUCK TRACTOR | 0 | 0 |
| Aug 5, 2026 |
| Category |
|---|
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 1.11 | — |
| HOS Compliance | 11 | 0.84 | — |
| Vehicle Maintenance | 31 | 6.02 | — |
| Driver Fitness | 1 | 0.15 | — |
| Controlled Substances | 1 | 0.07 | — |
| 4.44% |
Where they run
Inspected in 16 states. Top state CA accounts for 38% of activity. Activity outside home state (CA): 62%.
+11 other states with fewer inspections
| 28 |
| Hours-of-Service Compliance | 16 | 5 | 4 |
| Unsafe Driving | 3 | 1 | 0 |
| Controlled Substances/​Alcohol | 1 | 0 | 1 |
| Driver Fitness | 1 | 0 | 1 |
| CA |
| TRUCK TRACTOR |
| 2 |
| 0 |
| Jul 20, 2026 | AL | TRUCK TRACTOR | 0 | 0 |
| Jul 4, 2026 | AR | TRUCK TRACTOR | 0 | 0 |
| Jun 30, 2026 | CA | TRUCK TRACTOR | 3 | 1 |
| Jun 17, 2026 | AR | TRUCK TRACTOR | 0 | 0 |
| Jun 14, 2026 | OK | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Sep 9, 2026 | 39216D | Driver - Failed to use seat belt while operating a CMV | Unsafe Driving | — |
| Sep 9, 2026 | 3925A3POSS | Intoxicating - No driver shall be on duty or operate a CMV while the driver possesses wine or beer containing 0.5% or more ABV or distilled spirits in any dilutio | Controlled Substances/​Alcohol | Yes |
| Aug 5, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Aug 5, 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 | — |
| Jun 30, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Jun 30, 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 | — |
| Jun 30, 2026 | 3963A1BOS | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Vehicle Maintenance | Yes |
| May 23, 2026 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |
| May 12, 2026 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |
| May 11, 2026 | 39530B1 | Driver failed to certify the accuracy of the information gathered by the ELD | Hours-of-Service Compliance | — |