Equipment unit · VIN-decoded · NHTSA vPIC

2000 Superior Trailer Works

1S9S00000Y0009907 · Trailer · TRAILER
Carriers run under1
23 mo
Inspections8
all-time
OOS inspections2
of 8
First seenAug 3, 2023
CA
Last seenJul 17, 2025
CA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1S9S00000Y0009907
Make
Superior Trailer Works
Model
Superior Trailer Works
Model year
2000
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 17, 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
1S9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
S0000

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2000 or 2030

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

North American serial sequence
009907

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
SUPERIOR TRAILER WORKS

Prefix basis · 135 decoded VINs at 100.0% prefix purity.

Model
Superior Trailer Works

Prefix basis · 135 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
2000

Observed directly for this VIN via NHTSA vPIC.

Observed make
SUPERIOR TRAILER WORKS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Superior Trailer Works

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 · Aug 3, 2023 – Jul 17, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 17, 2025CAV · Vehicle-only2WESTERN MATERIALS INC 27552404UK6205/CA
Mar 6, 2025CAV · Vehicle-only4OOSWESTERN MATERIALS INC 27552404UK6205/CA
Oct 24, 2024CAI · Full6OOSWESTERN MATERIALS INC 27552404UK6205/CA
Mar 8, 2024CAII · Walk-around2WESTERN MATERIALS INC 27552404UK6205/CA
Feb 9, 2024CAI · Full9WESTERN MATERIALS INC 27552404UK6205/CA
Jan 31, 2024CAII · Walk-around3WESTERN MATERIALS INC 27552404UK6205/CA
Jan 26, 2024CAII · Walk-around1WESTERN MATERIALS INC 27552404UK6205/CA
Aug 3, 2023CAV · Vehicle-only3WESTERN MATERIALS INC 27552404UK6205/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WESTERN MATERIALS INC2755240Aug 3, 2023Jul 17, 20258CA
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.
4UK6205CAWESTERN MATERIALS INCAug 3, 2023Jul 17, 20258
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026