Equipment unit · VIN-decoded · NHTSA vPIC

2018 Stoughton Trailers

1DW1A5322JS777131 · Trailer · TRAILER
Carriers run under4
29 mo
Inspections7
all-time
OOS inspections2
of 7
First seenJan 24, 2024
AR
Last seenJun 22, 2026
NM
Inspected under 4 different carriers in 29 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
1DW1A5322JS777131
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 26, 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
1DW

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A532

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1988 or 2018

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

North American serial sequence
777131

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
STOUGHTON TRAILERS

Prefix basis · 12,945 decoded VINs at 100.0% prefix purity.

Model
Stoughton Trailers

Prefix basis · 12,945 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
STOUGHTON TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Stoughton Trailers

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 · Jan 24, 2024 – Jun 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 22, 2026NMIII · Driver-only2OOSA STERLING FREIGHT CARRIER INC 22672454RA8164/CA
Jun 22, 2026NMIII · Driver-only0A STERLING FREIGHT CARRIER INC 22672454RA8164/CA
Apr 17, 2026NMIII · Driver-only0GRD FREIGHT CARRIER INC 35478614RA8164/CA
Mar 25, 2025CAI · Full2OOSANSH FREIGHT INC 25620364RA8164/CA
Feb 8, 2025NMII · Walk-around1ANSH FREIGHT INC 25620364RA8164/CA
May 16, 2024AZI · Full1FIVE RIVER FREIGHT INC 41230094RA8164/CA
Jan 24, 2024ARIII · Driver-only0FIVE RIVER FREIGHT INC 41230094RA8164/CA
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
A STERLING FREIGHT CARRIER INC2267245Jun 22, 2026Jun 22, 20262CA
GRD FREIGHT CARRIER INC3547861Apr 17, 2026Apr 17, 20261CA
ANSH FREIGHT INC2562036Feb 8, 2025Mar 25, 20252CA
FIVE RIVER FREIGHT INC4123009Jan 24, 2024May 16, 20242CA
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.
4RA8164CA2A STERLING FREIGHT CARRIER INCJun 22, 2026Jun 22, 20262
4RA8164CAGRD FREIGHT CARRIER INCApr 17, 2026Apr 17, 20261
4RA8164CAANSH FREIGHT INCFeb 8, 2025Mar 25, 20252
4RA8164CAFIVE RIVER FREIGHT INCJan 24, 2024May 16, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 26, 2026