Diamond Mattress Co Inc is an active interstate carrier based in Compton, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 1 | 0 | 0 |
| Tractors | 8 | 0 | 0 |
| Trailers | 26 | 0 | 0 |
| Total Power Units | 9 | ||
Distinct vehicles · 24 mo
vs 9 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 | 81% | 94% | Worse than most peers |
| HOS Compliance | 82% | 94% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 91% | 95% | 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 | 9 | — | 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 | 50 | 14 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 18, 2026 | CA | TRUCK TRACTOR | 2 | 0 |
| Mar 11, 2026 | CA | TRUCK TRACTOR | 4 | 2 |
| Feb 24, 2026 | CA | STRAIGHT TRUCK | 4 | 1 |
| Dec 31, 2025 | CA | TRUCK TRACTOR | 2 |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 6
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 1.50 | — |
| HOS Compliance | 2 | 0.43 | — |
| Vehicle Maintenance | 19 | 8.71 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 3 states. Top state CA accounts for 94% of activity. Activity outside home state (CA): 6%.
| 15 |
| Hours-of-Service Compliance | 3 | 1 | 0 |
| Unsafe Driving | 1 | 1 | 0 |
| 0 |
| Dec 16, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Dec 10, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Dec 2, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Dec 2, 2025 | CA | TRUCK TRACTOR | 4 | 1 |
| Nov 21, 2025 | CA | TRUCK TRACTOR | 0 | 0 |
| Nov 14, 2025 | CA | TRUCK TRACTOR | 3 | 1 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 18, 2026 | 3963A1BALR | Air Brake - Fails air loss rate test | Vehicle Maintenance | — |
| Mar 18, 2026 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |
| Mar 11, 2026 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Mar 11, 2026 | 39348ABMBCBD | Drum Brake - Missing/broken component(s) | Vehicle Maintenance | — |
| Mar 11, 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 |
| Mar 11, 2026 | 3963A1ALBV | Air Brake - Any leak from a brake valve | Vehicle Maintenance | — |
| Feb 24, 2026 | 3922SLLMF | State/Local Laws - Wheel (mud) flaps missing or defective | Vehicle Maintenance | — |
| Feb 24, 2026 | 39311A1LCHL | Lighting - Lamps improper color height location. | Vehicle Maintenance | — |
| Feb 24, 2026 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | Yes |
| Feb 24, 2026 | 3963A1ALBV | Air Brake - Any leak from a brake valve | Vehicle Maintenance | — |
Mr Trucking Services Llc
Indianapolis, IN
Martin Romero · also at 6 others