Carrier profile · USDOT 1386399 · MC-528036 · Updated Jun 13, 2026

Diaz and Sons Transportation Inc

1 power unitavg 10.8 yrLocal · 1 statesWALNUT CREEK, CA74/100

AUTHORITY STATUS UNKNOWNMC-528036 STATUS UNKNOWN

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 · Jun 13, 2026

Review before loading

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

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 4.0 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.

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo0.0%

▼ 22.26% nat'l

Crashes · fatal

Clean · 24 mo

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo0.0%

▼ 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 unit. Brokers price each fleet type apart.

Fleet age vs peersTypical

10.8 yr

Model years 2006–2018 · peer benchmark unavailable.

Identity stabilityStable

21 yr unchanged

Same registration since 2005 — no chameleon / reincarnation signal.

Safety

8 inspections · 24 mo · vs national benchmarks

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 0.0%24-mo cumulative

050%nat'l 22.26%

Driver OOS 0.0%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 6 vehicle and 8 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

0.0% · latest 6-mo window● Steady

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Holding steady across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

8 inspections in the charted months · busiest month Nov '24 · 2

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

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 · 0 OOS
393.9 Inoperative required lampsVehicle Maintenance1 · 0 OOS

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.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.

Explore full authority & insurance record

Equipment

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

37.5%

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 (6 trucks · 2 carriers)

Across all inspections on record: USDOT 2420190 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 & Federal

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: Jun 21, 2005
Last MCS-150: Aug 5, 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

No verified reviews yet

Be the first broker or shipper to rate DIAZ AND SONS TRANSPORTATION INC. Reviews cover performance only — on-time delivery, payment speed, communication — and never affect the Vektor risk score.

Leave a review

Open reviews

Verification summaryAuthority, insurance, safety and identity facts for DIAZ AND SONS TRANSPORTATION INC.

DIAZ AND SONS TRANSPORTATION INC (USDOT 1386399) has a Vektor safety score of 74/100 and a Review before loading verdict, from the carrier's FMCSA record refreshed Jun 13, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available as of Jun 13, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jun 13, 2026.

Its vehicle out-of-service rate was 0.0% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Jun 13, 2026.

The carrier received 8 roadside inspections in the last 24 months — 6 vehicle-level and 8 driver-level — across 1 state, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.

The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Jun 13, 2026.

It reports 1 power unit and 1 driver in its most recent MCS-150 filing dated Aug 5, 2022.

It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.

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 Jun 13, 2026, 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.

Similar carriers in California

Comparable carriers operating in California

Moonlight Trans Inc Clear · 100Stockton, CA · 5 power units

Porter Transportation Inc Clear · 100Elk Grove, CA · 5 power units

Hydra Logistics Services Inc Clear · 100Sacramento, CA · 5 power units

CM Trans Inc Clear · 100Ontario, CA · 5 power units

Reliable Freight Services Clear · 100Burbank, CA · 5 power units

Blockchain Logistics LLC Clear · 100San Diego, CA · 5 power units

Francisco J Ulloa Clear · 100San Diego, CA · 5 power units

Infiniti Carriers LLC Clear · 100Paramount, CA · 5 power units

More in California →Owner-operators in California →Veteran carriers in California →

More California carriers

Other FMCSA-registered carriers near this one in the directory, by USDOT number.

Ambrocio M AguirreClearWhittier · 2 power units Walter CoronadoFontana · 1 power unit James E LindhorstRedding · 1 power unit Goldmine Logistics IncClearSacramento · 1 power unit Oscar Rodriguez Maribel FloresClearSan Diego · 6 power units Nathans Specialized IncSelma · 1 power unit