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 | Insp w/ Viol |
|---|
| 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 | 3 | — | 6.67% |
| Vehicle | 0 | 25 | — | 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 | 70 | 15 | 25 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 16, 2026 | CA | TRUCK TRACTOR | 1 | 1 |
| Feb 28, 2026 | MS | TRUCK TRACTOR | 0 | 0 |
| Jan 25, 2026 | CA | TRUCK TRACTOR | 3 | 0 |
| Jan 22, 2026 | AR | TRUCK TRACTOR | 0 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 0.30 | — |
| HOS Compliance | 9 | 0.88 | — |
| Vehicle Maintenance | 30 | 6.88 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 14 states. Top state CA accounts for 42% of activity. Activity outside home state (CA): 58%.
+9 other states with fewer inspections
| Hours-of-Service Compliance | 13 | 4 | 3 |
| Unsafe Driving | 2 | 0 | 0 |
| Jan 7, 2026 |
| CA |
| TRUCK TRACTOR |
| 2 |
| 2 |
| Jan 6, 2026 | CA | TRUCK TRACTOR | 2 | 1 |
| Dec 12, 2025 | CA | TRUCK TRACTOR | 3 | 1 |
| Nov 20, 2025 | AL | TRUCK TRACTOR | 4 | 1 |
| Nov 13, 2025 | MS | TRUCK TRACTOR | 0 | 0 |
| Nov 4, 2025 | CA | TRUCK TRACTOR | 10 | 8 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 16, 2026 | 393201AVFC | Van/OT Trailers - Floor crossmembers at least 3 adjacent broken/detached and sagging below | Vehicle Maintenance | Yes |
| Jan 25, 2026 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Jan 25, 2026 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Jan 25, 2026 | 3939ALFTSI | Lighting - Front - Turn signal - inoperative | Vehicle Maintenance | — |
| Jan 7, 2026 | 393207ASTBW | Suspension - Suspension connecting rod or tracking component assembly missing the rubber bushing or the rubber bushing is worn to the extent that the component ca | Vehicle Maintenance | Yes |
| Jan 7, 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 6, 2026 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | Yes |
| Jan 6, 2026 | 39347ABCLMBD | Drum Brake - Cracked/loose/missing lining/pad | Vehicle Maintenance | — |
| Dec 12, 2025 | 393203CCBP | Cab and Body Parts - Hood not securely fastened | Vehicle Maintenance | — |
| Dec 12, 2025 | 39355D2B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1 2001 for towed vehicle. | Vehicle Maintenance | — |