Equipment unit · VIN-decoded · NHTSA vPIC

2011 Heil Trailer International

5HTSN422XB7T90336 · Trailer · TRAILER
Carriers run under1
15 mo
Inspections6
all-time
OOS inspections0
of 6
First seenApr 17, 2024
TX
Last seenJul 21, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5HTSN422XB7T90336
Make
Heil Trailer International
Model
Heil Trailer International
Model year
2011
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 25, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
5HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SN422

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1981 or 2011

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
T90336

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
HEIL TRAILER INTERNATIONAL

Prefix basis · 454 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 454 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2011

Observed directly for this VIN via NHTSA vPIC.

Observed make
HEIL TRAILER INTERNATIONAL

Observed directly for this VIN via NHTSA vPIC.

Observed model
Heil Trailer International

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Apr 17, 2024 – Jul 21, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 21, 2025TXII · Walk-around0SOUTHWEST INTERSTATE TRANSPORTATION INC 270551248B628/TX
Jun 30, 2025TXII · Walk-around0SOUTHWEST INTERSTATE TRANSPORTATION INC 270551248B628/TX
Mar 5, 2025TXII · Walk-around0SOUTHWEST INTERSTATE TRANSPORTATION INC 270551248B628/TX
Oct 22, 2024TXII · Walk-around0SOUTHWEST INTERSTATE TRANSPORTATION INC 270551099B300/TX
Apr 22, 2024TXI · Full4SOUTHWEST INTERSTATE TRANSPORTATION INC 270551099B300/TX
Apr 17, 2024TXII · Walk-around1SOUTHWEST INTERSTATE TRANSPORTATION INC 270551099B300/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHWEST INTERSTATE TRANSPORTATION INC270551Apr 17, 2024Jul 21, 20256TX
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
248B628TXSOUTHWEST INTERSTATE TRANSPORTATION INCMar 5, 2025Jul 21, 20253
099B300TXSOUTHWEST INTERSTATE TRANSPORTATION INCApr 17, 2024Oct 22, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026