Equipment unit · VIN-decoded · NHTSA vPIC

1DW1A5320CB304721

Not yet decoded
Carriers run under3
28 mo
Inspections3
all-time
OOS inspections0
of 3
First seenAug 29, 2023
CA
Last seenDec 31, 2025
CA
Inspected under 3 different carriers in 28 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

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

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
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1982 or 2012

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

North American serial sequence
304721

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.

Temporarily unavailable

The platform resolver did not return a reliable response

Deterministic validation above is complete. Platform fields are withheld because an outage is not evidence that the VIN has no known platform.

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
2012

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.

VIN-level rule claims

Rules published for individual VIN positions beyond the prefix — applied with the WMI, prefix, and model-year guards each rule was validated under. Year-scoped rules were checked against model year 2012, established by the federal observation agreeing with a position-10 candidate.

Temporarily unavailable

The VIN-level rule resolver did not return a reliable response

Deterministic validation and the prefix-level results above are unaffected. An outage here is not evidence that no VIN-level rule applies.

Not established

  • platform resolution (temporarily unavailable)

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 29, 2023 – Dec 31, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 31, 2025CAIII · Driver-only0CALWEST TRANSPORT LLC 2928791078901T/TN
Oct 16, 2023CAI · Full2AMG FREIGHT INC 3381954078901T/TN
Aug 29, 2023CAI · Full2FOX TRANSPORTATION INC 1388780078901T/TN
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CALWEST TRANSPORT LLC2928791Dec 31, 2025Dec 31, 20251CA
AMG FREIGHT INC3381954Oct 16, 2023Oct 16, 20231CA
FOX TRANSPORTATION INC1388780Aug 29, 2023Aug 29, 20231CA
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.
078901TTNCALWEST TRANSPORT LLCDec 31, 2025Dec 31, 20251
078901TTNAMG FREIGHT INCOct 16, 2023Oct 16, 20231
078901TTNFOX TRANSPORTATION INCAug 29, 2023Aug 29, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC