Equipment unit · VIN-decoded · NHTSA vPIC

2022 Stoughton Trailers

1DW1A5324NSA72971 · Trailer · TRAILER
Carriers run under5
29 mo
Inspections12
all-time
OOS inspections1
of 12
First seenJan 8, 2024
PA
Last seenJun 30, 2026
CA
Inspected under 5 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
1DW1A5324NSA72971
Make
Stoughton Trailers
Model
Stoughton Trailers
Model year
2022
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
1DW

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A532

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1992 or 2022

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

North American serial sequence
A72971

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
2022

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 8, 2024 – Jun 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 30, 2026CAI · Full3HIGHWAY TRANSPORT LLC 375750168077AL/WA
Jun 16, 2026CAI · Full3HIGHWAY TRANSPORT LLC 375750168077AL/WA
Nov 26, 2025CAIII · Driver-only2A GRADE TRUCKING INC 410749168077AL/WA
Oct 17, 2025CAI · Full1HIGHWAY TRANSPORT LLC 375750168077AL/WA
Sep 30, 2025WAIII · Driver-only0HIGHWAY TRANSPORT LLC 37575014UG3970/CA
Aug 20, 2025WAIII · Driver-only1A GRADE TRUCKING INC 41074914UG3970/CA
Jul 30, 2025CAI · Full3A GRADE TRUCKING INC 41074914UG3970/CA
Mar 31, 2025CAII · Walk-around0HILLY HAULERS LLC 42729224UG3970/CA
Sep 30, 2024WAIII · Driver-only0BURNHAM LUMBER CO INC 5034974UG3970/CA
Apr 15, 2024CAIII · Driver-only0OVERNIGHT FREIGHT INC 32208244UG3970/CA
Mar 6, 2024ILIII · Driver-only3OVERNIGHT FREIGHT INC 32208244UG3970/CA
Jan 8, 2024PAIII · Driver-only5OOSOVERNIGHT FREIGHT INC 32208244UG3970/CA
03

Carriers this unit has run under

5 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HIGHWAY TRANSPORT LLC3757501Sep 30, 2025Jun 30, 20264WA
A GRADE TRUCKING INC4107491Jul 30, 2025Nov 26, 20253WA
HILLY HAULERS LLC4272922Mar 31, 2025Mar 31, 20251WA
BURNHAM LUMBER CO INC503497Sep 30, 2024Sep 30, 20241WI
OVERNIGHT FREIGHT INC3220824Jan 8, 2024Apr 15, 20243TX
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.
68077ALWA2HIGHWAY TRANSPORT LLCOct 17, 2025Jun 30, 20263
68077ALWAA GRADE TRUCKING INCNov 26, 2025Nov 26, 20251
4UG3970CAHIGHWAY TRANSPORT LLCSep 30, 2025Sep 30, 20251
4UG3970CAA GRADE TRUCKING INCJul 30, 2025Aug 20, 20252
4UG3970CAHILLY HAULERS LLCMar 31, 2025Mar 31, 20251
4UG3970CABURNHAM LUMBER CO INCSep 30, 2024Sep 30, 20241
4UG3970CAOVERNIGHT FREIGHT INCJan 8, 2024Apr 15, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026