Fleet typeIdentity
Owner-operator
1 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 156648 · Updated 06/13/2026
SOUTHWESTERN BIOLOGICALS INC
1 power unitsHOUSTON, TX
CARRIER INACTIVE
Observed fleet · trailing 24 mo daily
1Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Awaiting decode
Click to see how we scored it
Load decision · FMCSA snapshot · 2026-06-13
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
Established 52 yearsUSDOT registration inactive
Watch · 3
USDOT registration inactiveThe USDOT record is flagged inactive — the carrier may not be authorized to operate.No inspection history despite active fleetAn established carrier reporting 1 power units has no roadside inspections — a common shell/paper-carrier signal.MCS-150 census data outdatedThe biennial MCS-150 update is 20.0 years old; fleet/mileage figures may be unreliable.
In good standing · 1
Operating authority5252 yr active
since 1974Insurance (BIPD)Unknown
FMCSA L&IVehicle OOS · 24mo—%
▼ 22.26% nat'lCrashes · fatal00
clean 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Awaiting VIN decode
Identity stabilityStable
52 yr unchanged
Same registration since 1974 — no chameleon / reincarnation signal.
AI readFull read
Is SOUTHWESTERN BIOLOGICALS INC safe to work with?
Is SOUTHWESTERN BIOLOGICALS INC safe to load? SOUTHWESTERN BIOLOGICALS INC (USDOT 156648) is an inactive owner-operator motor carrier based in HOUSTON, TX, operating 1 power unit and 1 driver. Operating authority has been active 52 years (past the 24-month broker-confidence threshold). FMCSA has not assigned a safety rating. Vektor does not assign this carrier a safety score — there is not enough federal record to assess it. Verify authority and insurance directly. Source: FMCSA SAFER/MCMIS, last updated 2026-06-13.
FMCSA fields + Vektor analysis · updated 2026-06-13
SBSOUTHWESTERN BIOLOGICALS INC 50
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Frequently asked
What is SOUTHWESTERN BIOLOGICALS INC's USDOT number?
SOUTHWESTERN BIOLOGICALS INC's USDOT number is 156648.
Is SOUTHWESTERN BIOLOGICALS INC authorized to operate?
As of 2026-06-13, SOUTHWESTERN BIOLOGICALS INC is inactive in the FMCSA register.
How big is SOUTHWESTERN BIOLOGICALS INC's fleet?
SOUTHWESTERN BIOLOGICALS INC operates 1 power unit and 1 driver per its most recent MCS-150 filing.
Where is SOUTHWESTERN BIOLOGICALS INC based?
SOUTHWESTERN BIOLOGICALS INC is based in HOUSTON, TX.