Equipment unit · VIN-decoded · NHTSA vPIC

2010 Smithco Manufacturing

1S9SS4231AL476573 · Trailer · TRAILER
Carriers run under2
30 mo
Inspections9
all-time
OOS inspections6
of 9
First seenAug 24, 2023
MT
Last seenFeb 10, 2026
MT
Inspected under 2 different carriers in 30 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1S9SS4231AL476573
Make
Smithco Manufacturing
Model
SMITHCO MANUFACTURING
Model year
2010
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 16, 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
SS423

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1980 or 2010

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

North American serial sequence
476573

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
SMITHCO MANUFACTURING

Prefix basis · 76 decoded VINs at 100.0% prefix purity.

Model
SMITHCO MANUFACTURING

Prefix basis · 76 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
2010

Observed directly for this VIN via NHTSA vPIC.

Observed make
SMITHCO MANUFACTURING

Observed directly for this VIN via NHTSA vPIC.

Observed model
SMITHCO MANUFACTURING

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 24, 2023 – Feb 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 10, 2026MTII · Walk-around8OOSTKP ENTERPRISES LLC 4284737T935645/ND
Jul 30, 2025NDI · Full10OOSTKP ENTERPRISES LLC 4284737TA04542/MT
Jun 26, 2025MTII · Walk-around7OOSTKP ENTERPRISES LLC 4284737TA04542/MT
Feb 6, 2025NDII · Walk-around4OOSTKP ENTERPRISES LLC 4284737TA04542/MT
Jan 15, 2025NDIII · Driver-only3TKP ENTERPRISES LLC 4284737TA04542/MT
Jan 8, 2025MTIII · Driver-only0TKP ENTERPRISES LLC 4284737TA04542/MT
Mar 20, 2024MTI · Full6CORCORAN OILFIELD SERVICES INC 2259698T47643/MT
Sep 19, 2023MTIII · Driver-only2OOSCORCORAN OILFIELD SERVICES INC 2259698TA04542/MT
Aug 24, 2023MTI · Full17OOSCORCORAN OILFIELD SERVICES INC 2259698TA04542/MT
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TKP ENTERPRISES LLC4284737Jan 8, 2025Feb 10, 20266ND
CORCORAN OILFIELD SERVICES INC2259698Aug 24, 2023Mar 20, 20243MT
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.
T935645NDTKP ENTERPRISES LLCFeb 10, 2026Feb 10, 20261
TA04542MTTKP ENTERPRISES LLCJan 8, 2025Jul 30, 20255
T47643MTCORCORAN OILFIELD SERVICES INCMar 20, 2024Mar 20, 20241
TA04542MTCORCORAN OILFIELD SERVICES INCAug 24, 2023Sep 19, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026