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Carrier profile · USDOT 1386399 · MC-528036 · Updated 06/13/2026

DIAZ AND SONS TRANSPORTATION INC

1 power unitsavg 10.8 yrLocal · 1 statesWALNUT CREEK, CA

CARRIER ACTIVEMC-528036 INACTIVE

Observed fleet · trailing 24 mo daily

1Power units

1 observed · MCS-150

7Trailers seen

Decoded · vPIC

10.8Avg age (yr)

2006–2018 · vPIC

Call dispatch(925) 943-6765 Email dispatchdiaz.transportation@yahoo.com

Click to see how we scored it

Load decision · FMCSA snapshot · 2026-06-13

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Operating, but with flags a broker should weigh before tendering freight.

Established 21 yearsOut-of-service rates below national averageNo active operating authority

Watch · 2

No active operating authorityNo active common, contract, or broker authority is on file for a for-hire carrier.MCS-150 census data outdatedThe biennial MCS-150 update is 3.9 years old; fleet/mileage figures may be unreliable.

In good standing · 2

Established 21 yearsOperating authority has been on file since 2005.Out-of-service rates below national averageBoth vehicle and driver OOS rates beat the national benchmark across 10 inspections.

Operating authority

yr active

since 2005

Insurance (BIPD)Unknown

FMCSA L&I

Vehicle OOS · 24mo

0.0

▼ 22.26% nat'l

Crashes · fatal

clean 24 mo

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots

Fleet typeIdentity

Owner-operator

1 power units. Brokers price each fleet type apart.

Fleet age vs peersTypical

10.8 yr

Model years 2006–2018 · peer benchmark computing.

Identity stabilityStable

21 yr unchanged

Same registration since 2005 — no chameleon / reincarnation signal.

AI readLocal operator, 21-yr authority, 0% vehicle OOS — review first.Full read

Is DIAZ AND SONS TRANSPORTATION INC safe to load? DIAZ AND SONS TRANSPORTATION INC (USDOT 1386399, MC-528036) is an active owner-operator motor carrier based in WALNUT CREEK, CA, operating 1 power unit and 1 driver. Operating authority has been active 21 years (past the 24-month broker-confidence threshold). Across 10 roadside inspections, its vehicle out-of-service rate over the last 24 months is 0.0% (below the 22.26% national average), with 0 reportable crashes in the last 24 months. FMCSA has not assigned a safety rating. Vektor rates it review before loading (74/100), with the leading concern: no active operating authority. Source: FMCSA SAFER/MCMIS, last updated 2026-06-13.

FMCSA fields + Vektor analysis · updated 2026-06-13

DADIAZ AND SONS TRANSPORTATION INC 74

Safety

10 inspections · 24 mo · vs national benchmarks

Out-of-service rate· trailing 24 months vs national benchmark

Vehicle OOS 0.0% (24-mo)6 veh insp · 24-mo · nat'l 22.26%

050%nat'l 22.26%

Driver OOS 0.0% (24-mo)8 drv insp · 24-mo · nat'l 6.67%

030%nat'l 6.67%

OOS trajectory· trailing 6-mo vehicle-OOS rate vs national

0.0% now● Stable

Holding near 0.0% — under the 22.26% national benchmark.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Heavily inspected

Under-inspected

Expected

Well-monitored

Heavily inspected

≈4.0 / unit·yr

thin signalabundant signal

Among the more heavily-inspected carriers for its size — abundant roadside signal. Coverage isn't the question here; the out-of-service and crash record is.

Registered power units: 1
Inspections · 24 mo: 8
Annualized: ≈4 / yr
Coverage: ≈4.0 inspections / unit · yr

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving1
393.9 Inoperative required lampsVehicle Maintenance1

Explore full safety record — inspections, BASICs, crashes

Authority & insurance

Can they legally + adequately haul your load?

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

Explore full authority & insurance record

Equipment & fleet

VIN-decoded · NHTSA vPIC

Capacity· power units = haulable capacity; trailers are towed

Registered power units (MCS-150): 1
Observed power (24 mo): 1
Trailers (towed): 7

Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.

Fleet age· model years · decoded VINs

10.8 yr

Average age

2018

Newest model yr

2006

Oldest model yr

38%

VINs decoded

Explore full fleet — VIN roster, equipment mix, age distribution

Operations & lanes

Revealed by inspection density across 1 states · 24 mo

Operating footprint· revealed by roadside-inspection geography

Operating radiusLocal

revealed

States observed

US states

Inspections · 24 mo

CA busiest

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base

WALNUT CREEK, CA

972 MONET CIRCLE

Top corridor

CA 8

Density

fewermore

Shade = roadside inspections, last 24 mo.

See the full operating map — state density, top lanes

Network & fraud

Affiliated entities & reincarnation signals · for review, not a verdict

Last 12 months: 2 trucks also ran under 2 other carriers

VINs inspected under this carrier were recently inspected under other USDOTs too — the active double-broker / shared-equipment signal: USDOT 2420190 USDOT 433123Some overlap is legitimate (leased or sold equipment); review alongside the other signals.

Show all-time history (5 trucks · 1 carriers)

Across all inspections on record: USDOT 433123

Shares a company officer with other carriers

antonio diaz — 21 carriers: USDOT 654142 USDOT 1277814 USDOT 1343165 USDOT 1622804 USDOT 1736467 USDOT 1798950 USDOT 1859087 USDOT 2153859

Capacity consistency· registered vs roadside-observed power units

Registered (MCS-150)

Observed (24 mo)

Shared w/ other carriers

Registered and roadside-observed capacity are broadly consistent.

Explore the carrier network & VIN cross-links

Identity & contact

FMCSA census + L&I dossier

Location

Physical address: 972 MONET CIRCLE, WALNUT CREEK, CA, 94597
Operation: Intrastate (Non-Hazmat)

Contact

Phone: (925) 943-6765
Cell: (415) 740-5436
Fax: (925) 280-2531
Email: diaz.transportation@yahoo.com

Registration

Officers: Antonio Diaz · Alvina M Diaz
USDOT / docket: 1386399 · MC-528036
First registered: 06/21/2005
Last MCS-150: 08/05/2022 · 64,274 mi (2021)
FMCSA safety rating: Not rated
Recordable crash rate: 0.00
D-U-N-S: —

Fleet (self-reported · MCS-150)

Power units

Drivers

CDL drivers

64,274

Annual mileage

Open the full identity & federal record

Federal activity

Daily-captured FMCSA licensing & insurance changes — monitored by Vektor

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.

Open the full federal-record activity feed

Reviews

Verified broker, shipper & driver reviews — moderated

Performance ratings only — never the Vektor risk score

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Frequently asked

What is DIAZ AND SONS TRANSPORTATION INC's USDOT number?

DIAZ AND SONS TRANSPORTATION INC's USDOT number is 1386399, and its motor carrier number is MC-528036.

Is DIAZ AND SONS TRANSPORTATION INC authorized to operate?

As of 2026-06-13, DIAZ AND SONS TRANSPORTATION INC is active in the FMCSA register.

What is DIAZ AND SONS TRANSPORTATION INC's safety record?

DIAZ AND SONS TRANSPORTATION INC has a 0.0% vehicle out-of-service rate (national average 22.26%) across 10 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 74/100 (tier: review).

How big is DIAZ AND SONS TRANSPORTATION INC's fleet?

DIAZ AND SONS TRANSPORTATION INC operates 1 power unit and 1 driver per its most recent MCS-150 filing.

Where is DIAZ AND SONS TRANSPORTATION INC based?

DIAZ AND SONS TRANSPORTATION INC is based in WALNUT CREEK, CA, with roadside inspections recorded across 1 state.

Contact & documents

Call dispatch9259436765 Email dispatchdiaz.transportation@yahoo.comCarrier packetDownload / print · free

USDOT: 1386399
MC / Docket: MC-528036
Officer: ANTONIO DIAZ
Address: 972 MONET CIRCLE
WALNUT CREEK, CA, 94597

At a glance

Vehicle OOS 0%

vs 22.26% national — at or below benchmark.

No crashes in 24 months

Clean recent crash record.

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Is DIAZ AND SONS TRANSPORTATION INC safe to work with?

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Equipment & fleet

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Frequently asked

What is DIAZ AND SONS TRANSPORTATION INC's USDOT number?

Is DIAZ AND SONS TRANSPORTATION INC authorized to operate?

What is DIAZ AND SONS TRANSPORTATION INC's safety record?

How big is DIAZ AND SONS TRANSPORTATION INC's fleet?

Where is DIAZ AND SONS TRANSPORTATION INC based?

Safety

Authority & insurance

Equipment & fleet

Operations & lanes

Network & fraud

Identity & contact

Federal activity

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