EMMA LEONOR DIAZ DE LEON HERRERA
Book with caution — review signals below
No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking.
- No BIPD/Primary row in our insurance history Verify live coverage on FMCSA L&I before tendering.
- OOS rate worse than size peers Driver and/or vehicle out-of-service rate is above the peer median.
- 1 active operating authority
- BOC-3 process agent on file Carrier Details →
Plain-text risk summary (print / paste)
TruckCodex risk summary — EMMA LEONOR DIAZ DE LEON HERRERA (USDOT 2126030) Verdict: CAUTION Book with caution — review signals below No hard OOS / revoked / uninsured blocker, but elevated risk signals need a human look before booking. Authority / census status: Active Officer(s): ALICIA AYALA (Company officer) Blockers: (none) Cautions: • No BIPD/Primary row in our insurance history — Verify live coverage on FMCSA L&I before tendering. • OOS rate worse than size peers — Driver and/or vehicle out-of-service rate is above the peer median. On file: • 1 active operating authority • BOC-3 process agent on file — Carrier Source: https://truckcodex.com/usdot/2126030/ As of: Jul 19, 2026 Always confirm on FMCSA SAFER and L&I before tendering — TruckCodex mirrors public filings and can lag by up to a day.
TruckCodex · compliance grade
Compliance grade C
Composite of 4/5 scored components (mean 60/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
C
confidence 80% · 4/5 signals
Compliance grade C
Composite of 4/5 scored components (mean 60/100). Expand for per-signal evidence. Heuristic — not an FMCSA rating or legal advice.
Active census status with no OOS order or revoked authority on file.
No BIPD/Primary row in our insurance history for this USDOT.
Driver OOS 4.5% vs peer median 0% (worse). Vehicle OOS 29.4% vs peer median 0% (worse). n=197576 same-size ACTIVE peers.
FMCSA has not assigned this carrier a formal safety rating. We do not invent one.
NR reason: No published FMCSA safety_rating.
No BMC-91 insurance-lapse watch classification on file for this USDOT.
TruckCodex compliance grade from authority, BIPD, peer OOS, FMCSA safety rating, and insurance-watch signals. Not legal advice. See methodology. Booking triage on this page: Caution.
No BIPD/Primary in data
Company profile
No active FMCSA cargo filing on file.
FMCSA L&I filing evidence — not a shipper certificate of insurance (COI). Cargo (BMC-34) is primarily an HHG / household-goods requirement; general freight carriers often have none.
Fleet details (MCS-150)
| Vehicle type | Owned | Term leased | Trip leased |
|---|---|---|---|
| Truck tractors | 5 | 0 | 0 |
Self-reported on the carrier’s Form MCS-150 (FMCSA Company Census).
Inspections (24 months)
All 147 inspections →| Driver | Vehicle | Hazmat | |
|---|---|---|---|
| Inspections | 74 | 74 | 0 |
| OOS inspections | 4 | 18 | 0 |
| OOS percentage | 5.41% | 24.32% | — |
| National average | 6.67% | 22.26% | 4.44% |
Roadside inspections in the last 24 months. National averages are FMCSA MCSAP reference rates (driver ~6.7%, vehicle ~23.4%, hazmat ~4.4%).
Carrier analysis & narrative context SEO summary, status notes, AI overview, and safety profiles
EMMA LEONOR DIAZ DE LEON HERRERA is a motor carrier based in NOGALES, SO, registered with the FMCSA under USDOT 2126030. The carrier is currently active in FMCSA's records, and has not yet received a formal FMCSA safety rating. MCS-150 self-reporting puts the fleet at 5 power units and 5 drivers, with 147 roadside inspections on file and a peak out-of-service rate of 29.4%. Use this page to verify the carrier's authority and insurance, review its inspection and crash history, and cross-reference live data on FMCSA SAFER before booking a load or onboarding a partner.
Carrier is unrated
FMCSA has not assigned this carrier a formal safety rating. Use the inspection history and BASIC scores below to assess on-road performance.
EMMA LEONOR DIAZ DE LEON HERRERA is a small fleet, operating 5 power units and 5 drivers, based in Nogales, SO. Across 83 roadside inspections in the last 24 months, the fleet recorded a 33.7% out-of-service rate, with no reportable crashes on file. Operating authority is active for for hire.
83 roadside inspections over the last 24 months, up 36% versus the prior 24 months, concentrated in US (52) and AZ (31), with Level 1 inspections the most common.
33.7% out-of-service rate; led by Vehicle Maintenance (90.8% of violations); top code 396.5B-L (Fuel system leak) cited 43 times.
The fleet comprises 5 power units (small fleet) and 5 drivers; Freightliner, Utility, and Great Dane are the most-inspected makes.
Risk Signals
Out-of-Service rate vs same-size peers FMCSA roadside inspections, % placed out-of-service
Compared against 197,576 ACTIVE carriers operating 2–8 power units (±50% of this carrier's 5 unit fleet).
Inspection Analytics Monthly activity · BASIC mix · state map
Monthly Inspection Activity (24 months)
Violations by BASIC Category
Vehicle Fleet Top makes and models observed in roadside inspections
| Make | Model | Inspections |
|---|---|---|
| Freightliner | 123 | |
| Utility | 28 | |
| Great Dane | 7 | |
| CIMC | 3 | |
| Hyundai Translead | 3 | |
| Peterbilt | 3 | |
| Chevrolet | 2 |
SMS BASIC Scores FMCSA Safety Measurement System per-BASIC scores
| BASIC | Inspections | Serious | Measure | Percentile | Alert | As Of |
|---|---|---|---|---|---|---|
| Driver Fitness | 28 | — | 2.30 | 2 | — | Jul 13, 2026 |
| Controlled Substances / Alcohol | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Hours of Service | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Unsafe Driving | 0 | — | 0.00 | 0 | — | Jul 13, 2026 |
| Vehicle Maintenance | 70 | — | 15.35 | 15 | — | Jul 13, 2026 |
Higher percentiles indicate worse performance relative to peer carriers. Carriers at or above the FMCSA intervention threshold are marked ALERT.
Recent Inspections (147 rows) View all 147 →
| Inspection # | Date ▼ | State | Level | Station | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| 88428040 | Jul 14, 2026 | AZ | 1 | — |
FREIGHTLINER TRUCK TRACTOR
|
3 | 393.201A-FRCLS, 396.3A1-ALBV, 391.11B2-Z | No |
| 88382163 | Jul 9, 2026 | AZ | 2 | — |
FREIGHTLINER TRUCK TRACTOR
|
4 | 393.55E-B, 393.9A-LIL, 393.83G | No |
| 87802370 | May 8, 2026 | AZ | 1 | — |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 87482219 | Apr 1, 2026 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
4 | 396.5B-L, 393.47E, 393.53B-B | No |
| 87402737 | Mar 24, 2026 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
5 | 396.5B-L, 393.75C-TAOTD-LT2/32, 396.17C-PI | No |
| 87431308 | Dec 16, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
6 | 383.23A2-LCDLN, 396.5B-L, 396.9D2-FTF | Yes |
| 87296595 | Dec 16, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
1 | 391.11B2-Z | No |
| 87025149 | Dec 4, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
Ticket: Mercedes B
|
11 | 396.3A1-BOS, 393.47E, 393.9A-LCL | Yes |
| 86762204 | Nov 29, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
11 | 396.3A1-DLDSUJBCB, 393.75C-TAOTD-LT2/32, 393.209E-SPSLA | Yes |
| 86762028 | Nov 25, 2025 | US | 2 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
9 | 393.11A1-LLPL, 393.55E-B, 396.9D2-FTF | No |
| 86674545 | Nov 21, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
7 | 393.47E, 393.201A-FRCLS, 393.83G | No |
| 86395539 | Nov 21, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
7 | 393.47E, 392.2-SLLTL, 393.75C-TAOTD-LT2/32 | No |
| 86331836 | Nov 14, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
5 | 393.43A-TPV, 396.5B-HWSL, 393.9A-LIL | Yes |
| 86315698 | Nov 12, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 86218925 | Nov 1, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
7 | 393.201A-FRCLS, 393.25A-L, 396.5B-L | No |
| 86410687 | Oct 29, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
7 | 383.95A-LCDL, 393.201B-FR, 387.303B4I | Yes |
| 86381518 | Oct 21, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
4 | 387.303B4I, 396.5B-L, 393.201A-FRCLS | No |
| 86166443 | Oct 9, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
4 | 393.47A-BCFSBD-SA, 396.5B-L, 393.83G | Yes |
| 85640277 | Aug 19, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
3 | 396.5B-L, 396.9D2-FTF, 391.11B2-Z | No |
| 85550206 | Aug 19, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
2 | 396.5B-L, 391.11B2-Z | No |
| 85512356 | Aug 15, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
9 | 393.9A-LTSI, 393.9A-LHWS, 393.9A-LFTSI | Yes |
| 85509148 | Aug 14, 2025 | AZ | 3 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
0 | — | No |
| 85448675 | Aug 9, 2025 | US | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
14 | 393.47E, 393.53C-B, 393.53B-B | No |
| 85449856 | Aug 8, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
4 | 396.5B-L, 393.83G, 391.11B2-Z | No |
| 85424511 | Aug 5, 2025 | AZ | 1 | NOGALES AZ |
FREIGHTLINER TRUCK TRACTOR
|
7 | 393.47E, 393.11A1-CSURR, 393.9A-LBL | No |
Authority Records (1 docket)
Compliance Timeline Merged authority / insurance / enforcement events
-
May 23, 2024enforcementEnforcement case AZ-2024-2002-US1296 — $2,000
-
Apr 24, 2024enforcementEnforcement case AZ-2023-0492-US1257 — $4,370
-
Oct 8, 2022enforcementEnforcement case AZ-2022-0173-US1257 — $3,170
-
Mar 9, 2011
Top Stations & Violation Codes Where this carrier gets inspected and what they get cited for
Most-Inspected Stations
| Station | State | Inspections | OOS |
|---|---|---|---|
| NOGALES AZ | US | 70 | 30 |
| NOGALES AZ | AZ | 37 | 6 |
| NOGALES PORT OF ENTRY | AZ | 18 | 1 |
| NOGALESAZ | US | 16 | 7 |
| NOGALES MARIPOSA PORT OF ENTRY | US | 1 | 0 |
Top Violation Codes Cited
| Code | Description | Category | Cited | OOS |
|---|---|---|---|---|
| 393.83(g) | Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment. | Vehicle Maintenance | 27 | 0 |
| 393.9(a) | Inoperable required lamps | Vehicle Maintenance | 17 | 3 |
| 396.3(a)(1) | Inspection, repair and maintenance of parts and accessories | Vehicle Maintenance | 14 | 3 |
| 396.5(b) | Oil and/or grease leak | Vehicle Maintenance | 14 | 0 |
| 393.47(e) | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Vehicle Maintenance | 10 | 0 |
| 392.2 | Violation of Local Laws - Explain: | Unsafe Driving | 8 | 0 |
| 393.11(a)(1) | Lighting devices/reflectors | Vehicle Maintenance | 8 | 0 |
| 393.75(c) | Tire-other tread depth less than 2/32 of inch measured in a major tread groove | Vehicle Maintenance | 8 | 0 |
| 396.9(d)(2) | Failure to correct defects noted on previous inspection report | Vehicle Maintenance | 8 | 0 |
| 393.201(a) | Frame cracked / loose / sagging / broken | Vehicle Maintenance | 6 | 0 |
Related Records Cross-references to every adjacent page
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Stations in Sonora (Mexico)
Where this carrier might be inspected
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Docket MX740860
common · ACTIVE · MX
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Carrier
BOC-3 process agent · 18,702 carriers served
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147 inspections
Full roadside inspection history
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Fleet recall search
NHTSA recalls covering this fleet's vehicle years/makes
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File a complaint
Open the FMCSA National Consumer Complaint form for this carrier
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Carrier comparison tool
Side-by-side vs. other carriers
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How FMCSA safety ratings work
BASIC percentiles and compliance review context
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BOC-3 process agents explained
Why every interstate carrier must file a process agent
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FMCSA compliance filings guide
MCS-150, insurance, and authority filing requirements
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Roadside inspection rights
What drivers and carriers can expect during a stop
How to verify EMMA LEONOR DIAZ DE LEON HERRERA
- Verify USDOT and MC numbers match the carrier's documents. Compare the USDOT number and MC docket on this page to the numbers on the carrier's invoice, rate confirmation, or load-board listing. A mismatch between the carrier's claimed numbers and the registered legal name is the single most common red flag.
- Check active operating authority and insurance status. Confirm the Authority Records show at least one ACTIVE docket for the type of operation you're booking, and that the Active Insurance card lists a current BIPD/Primary policy. A revoked authority or uninsured carrier cannot legally operate.
- Review safety rating and SMS BASIC scores. Check the carrier's FMCSA safety rating (if any) and the SMS BASIC table. A high percentile in any BASIC category — especially Unsafe Driving, HOS, or Vehicle Maintenance — is worth investigating before tendering a load.
- Examine inspection and crash history. Open the Inspection History and Crash History subpages for the full record. Look for patterns: repeat OOS findings on the same unit, multiple crashes in a short window, or violations clustered in one BASIC category.
- Cross-reference real-time data with FMCSA SAFER. For the most current snapshot — within 24 hours of any insurer filing or authority change — click through to the FMCSA SAFER lookup. TruckCodex mirrors SAFER and L&I daily; SAFER itself reflects filings within 24 hours.
Frequently asked questions about EMMA LEONOR DIAZ DE LEON HERRERA
Is EMMA LEONOR DIAZ DE LEON HERRERA an active motor carrier? ▾
What is EMMA LEONOR DIAZ DE LEON HERRERA's safety rating? ▾
How many inspections has EMMA LEONOR DIAZ DE LEON HERRERA had? ▾
What is EMMA LEONOR DIAZ DE LEON HERRERA's out-of-service rate? ▾
Where is EMMA LEONOR DIAZ DE LEON HERRERA based? ▾
Does EMMA LEONOR DIAZ DE LEON HERRERA have valid operating authority? ▾
How many trucks and drivers does EMMA LEONOR DIAZ DE LEON HERRERA operate? ▾
Has EMMA LEONOR DIAZ DE LEON HERRERA had any crashes? ▾
About FMCSA carrier records
Every commercial motor carrier operating in the United States is required to register with the Federal Motor Carrier Safety Administration (FMCSA) and obtain a USDOT number. The USDOT number is a permanent, unique identifier — once assigned, it stays with the carrier for life and is never reissued to another company. Carriers must update their registration every two years on Form MCS-150 to keep their address, fleet size, and operating data current.
Carrier safety data lives in FMCSA's Motor Carrier Management Information System (MCMIS): roadside inspections, crashes, out-of-service findings, and the seven Behavior Analysis and Safety Improvement Categories (BASICs) that make up the SMS scoring methodology. For-hire carriers must also hold operating authority — an MC, FF, or MX docket number — which is separate from the USDOT number and requires continuous insurance and BOC-3 process-agent filings to remain active.
TruckCodex mirrors FMCSA's public SAFER and L&I systems on a daily refresh cycle. Every record on this page reflects what FMCSA has on file. We do not edit or modify carrier data — for real-time confirmation immediately before a transaction, click through to the FMCSA SAFER lookup linked in the related records section above. Safety ratings, when present, come from formal compliance reviews; most active carriers have not been reviewed and are correctly listed as unrated.
Data sources & freshness
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.