Emma Leonor Diaz De Leon Herrera is an active interstate carrier based in Nogales, SO.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 5 | 0 | 0 |
| Tractors | 5 | 0 | 0 |
| Total Power Units | 5 | ||
Distinct vehicles · 24 mo
vs 5 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 | 75% | 70% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 36% | 49% | Around peer average |
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 | 30 | — | 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 | 360 | 77 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 24, 2026 | AZ | TRUCK TRACTOR | 5 | 0 |
| Dec 16, 2025 | US | TRUCK TRACTOR | 1 | 0 |
| Dec 4, 2025 | US | TRUCK TRACTOR | 10 | 1 |
| Nov 29, 2025 | US | TRUCK TRACTOR | 8 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 73 | 15.95 | — |
| Driver Fitness | 23 | 1.88 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 2 states. Top state US accounts for 62% of activity. Activity outside home state (SO): 100%.
| 32 |
| Driver Fitness | 24 | 3 | 4 |
| Nov 25, 2025 | US | TRUCK TRACTOR | 9 | 0 |
| Nov 21, 2025 | AZ | TRUCK TRACTOR | 5 | 0 |
| Nov 21, 2025 | US | TRUCK TRACTOR | 6 | 0 |
| Nov 14, 2025 | AZ | TRUCK TRACTOR | 5 | 2 |
| Nov 12, 2025 | AZ | TRUCK TRACTOR | 0 | 0 |
| Nov 1, 2025 | US | TRUCK TRACTOR | 5 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 24, 2026 | 39111B2Z | Border Zone - Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. | Driver Fitness | — |
| Mar 24, 2026 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
| Mar 24, 2026 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Mar 24, 2026 | 3963A1ALBV | Air Brake - Any leak from a brake valve | Vehicle Maintenance | — |
| Mar 24, 2026 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |
| Dec 16, 2025 | 39111B2Z | Border Zone - Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. | Driver Fitness | — |
| Dec 4, 2025 | 39111B2Z | Border Zone - Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) as per FMCSA Enforcement Guidance Memo MC-SEE-2025-0001. | Driver Fitness | — |
| Dec 4, 2025 | 39324CL | Lighting - Headlamp(s) improperly mounted | Vehicle Maintenance | — |
| Dec 4, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Dec 4, 2025 | 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 | — |