Diamond Transport Corporation is an active interstate carrier based in Middle River, MD.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 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 |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 89% | 93% | Worse than most peers |
| HOS Compliance | 99% | 98% | Worse than most peers |
| Driver Fitness | 96% | 98% | Worse 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 | 4 | — | 6.67% |
| Vehicle | 0 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 11 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 4, 2026 | CT | STRAIGHT TRUCK | 2 | 1 |
| Jan 21, 2026 | PA | STRAIGHT TRUCK | 2 | 1 |
| Dec 23, 2025 | CT | STRAIGHT TRUCK | 4 | 0 |
| May 27, 2025 | NJ | STRAIGHT TRUCK | 0 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 3 | 3.72 | — |
| HOS Compliance | 2 | 2.93 | — |
| Vehicle Maintenance | 2 | 20.00 | — |
| Driver Fitness | 3 | 3.40 | — |
| Controlled Substances | 0 | 0.00 | — |
Inspected in 4 states. Top state NJ accounts for 43% of activity. Activity outside home state (MD): 100%.
| 1 |
| 2 |
| Driver Fitness | 3 | 2 | 2 |
| Hours-of-Service Compliance | 3 | 1 | 2 |
| Unsafe Driving | 3 | 0 | 0 |
| Apr 23, 2025 | MA | STRAIGHT TRUCK | 9 | 4 |
| Feb 7, 2025 | NJ | STRAIGHT TRUCK | 2 | 0 |
| Dec 9, 2024 | NJ | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 4, 2026 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Mar 4, 2026 | 3922SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other | Unsafe Driving | — |
| Jan 21, 2026 | 3953A2HOSPDIT | HOS (Property) - Driver driving beyond the 14 hour after coming on duty following 10 consecutive hours off duty at the time of inspection. Time | Hours-of-Service Compliance | Yes |
| Jan 21, 2026 | 3958A | HOS (Form) - Paper Log/Logging Programs Form and Manner | Hours-of-Service Compliance | — |
| Dec 23, 2025 | 3927AD | Driver - Failed to conduct pre-trip inspection or make use of required parts and accessories | Vehicle Maintenance | — |
| Dec 23, 2025 | 39311A1LSML | Lighting - Side marker lamp(s) missing | Vehicle Maintenance | — |
| Dec 23, 2025 | 39345B2BAIR | Air Brake - Hose/tubing damaged or not secured | Vehicle Maintenance | — |
| Dec 23, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Apr 23, 2025 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Apr 23, 2025 | 393102C1C | Cargo - Immobilized such so that it cannot shift or tip to the extent that the vehicle's stability or maneuverability is adversely affected | Vehicle Maintenance | Yes |