Equipment unit · VIN-decoded · NHTSA vPIC

2011 Stairs

1S9LS4632B1260680 · Trailer · TRAILER
Carriers run under2
11 mo
Inspections2
all-time
OOS inspections0
of 2
First seenJun 20, 2024
ME
Last seenMay 20, 2025
ME
Inspected under 2 different carriers in 11 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
1S9LS4632B1260680
Make
Stairs
Model
Stairs
Model year
2011
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 30, 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
LS463

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

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
260680

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
STAIRS

Prefix basis · 33 decoded VINs at 100.0% prefix purity.

Model
Stairs

Prefix basis · 33 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
STAIRS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Stairs

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 · Jun 20, 2024 – May 20, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 20, 2025MEI · Full2RANDALL MADDEN TRUCKING INC 745775C376144/ME
Jun 20, 2024MEIII · Driver-only1THORNTON CONSTRUCTION INC 791398C376144/ME
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RANDALL MADDEN TRUCKING INC745775May 20, 2025May 20, 20251ME
THORNTON CONSTRUCTION INC791398Jun 20, 2024Jun 20, 20241ME
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.
C376144MERANDALL MADDEN TRUCKING INCMay 20, 2025May 20, 20251
C376144METHORNTON CONSTRUCTION INCJun 20, 2024Jun 20, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 30, 2026