Fleet typeIdentity
Owner-operator
2 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 4178798 · MC-1608537 · Updated Jun 13, 2026
ST 321 TRANSPORT LLC
2 power unitsSAN ANTONIO, TX50/100
NO OPERATING AUTHORITYMC-1608537 NO AUTHORITYUNDELIVERABLE ADDRESS
Observed fleet · trailing 24 mo daily
2Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Not yet decoded
Click to see how we scored it
Load decision · FMCSA snapshot · Jun 13, 2026
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
USDOT registration inactive
Watch · 5
USDOT registration inactiveThe USDOT record is flagged inactive — the carrier may not be authorized to operate.No active operating authorityNo active common, contract, or broker authority is on file for a for-hire carrier.No inspection history despite active fleetAn established carrier reporting 2 power units has no roadside inspections — a common shell/paper-carrier signal.Undeliverable physical addressFMCSA mail to this carrier's physical address was returned undeliverable — a common shell-carrier signal. Verify the address before tendering.MCS-150 update dueThe biennial MCS-150 update is overdue.
In good standing · 0
Nothing flagged.
USDOT registration22 yr registered
No active authorityInsurance (BIPD)— unknown
No filing on recordVehicle OOS · 24-mo—
No inspections · 24 moCrashes · fatal—
No crash recordVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Not yet decoded
Identity stabilityStable
2 yr unchanged
Same registration since 2024 — no chameleon / reincarnation signal.
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Verification summary
ST 321 TRANSPORT LLC (USDOT 4178798) is unrated by Vektor because the carrier's FMCSA record does not contain enough evidence for a safety score as of Jun 13, 2026.
The carrier has no active for-hire operating authority per FMCSA L&I 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.
The carrier received 0 roadside inspections in the last 24 months — 0 vehicle-level and 0 driver-level, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.
It reports 2 power units and 3 drivers in its most recent MCS-150 filing dated Jan 11, 2024.
It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.
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Frequently asked
What is ST 321 TRANSPORT LLC's USDOT number?
ST 321 TRANSPORT LLC's USDOT number is 4178798, and its motor carrier number is MC-1608537.
Is ST 321 TRANSPORT LLC authorized to operate?
As of Jun 13, 2026, ST 321 TRANSPORT LLC is inactive in the FMCSA register with common, contract, broker operating authority on file.
How big is ST 321 TRANSPORT LLC's fleet?
ST 321 TRANSPORT LLC operates 2 power units and 3 drivers per its most recent MCS-150 filing.
Where is ST 321 TRANSPORT LLC based?
ST 321 TRANSPORT LLC is based in SAN ANTONIO, TX.
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