Equipment unit · VIN-decoded · NHTSA vPIC

2021 Great Dane Trailers

1GR1A0620MW228308 · Trailer · TRAILER
Everest (reefer)
Carriers run under4
30 mo
Inspections6
all-time
OOS inspections0
of 6
First seenNov 27, 2023
AR
Last seenMay 17, 2026
NM
Inspected under 4 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
1GR1A0620MW228308
Make
Great Dane Trailers
Model
Great Dane Trailers
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 3, 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
1GR

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A062

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1991 or 2021

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

North American serial sequence
228308

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
GREAT DANE TRAILERS

Prefix basis · 13,972 decoded VINs at 100.0% prefix purity.

Model
Great Dane Trailers

Prefix basis · 13,972 decoded VINs at 100.0% prefix purity.

Model line
Everest (reefer)

Sourced label · prefix basis 13,972 decoded VINs at 100.0% prefix purity.

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
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
GREAT DANE TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Great Dane 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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Nov 27, 2023 – May 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 17, 2026NMII · Walk-around0STANFORD TRANSPORTATION INC 27796244WJ8644/CA
May 16, 2026NMII · Walk-around0STANFORD TRANSPORTATION INC 27796244WJ8644/CA
Jul 8, 2025ARIII · Driver-only1STANFORD TRANSPORTATION INC 27796244TC6989/CA
Sep 24, 2024NMIII · Driver-only01 STEP TRANSPORT INC 35756844TC6989/CA
Aug 9, 2024LAIII · Driver-only1STANDFIELD TRUCKING INC 23996044TC6989/CA
Nov 27, 2023ARIII · Driver-only3STANDARD TRUCKING INC 33961384TC6989/CA
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STANFORD TRANSPORTATION INC2779624Jul 8, 2025May 17, 20263TN
1 STEP TRANSPORT INC3575684Sep 24, 2024Sep 24, 20241CA
STANDFIELD TRUCKING INC2399604Aug 9, 2024Aug 9, 20241CA
STANDARD TRUCKING INC3396138Nov 27, 2023Nov 27, 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.
4WJ8644CA2STANFORD TRANSPORTATION INCMay 16, 2026May 17, 20262
4TC6989CASTANFORD TRANSPORTATION INCJul 8, 2025Jul 8, 20251
4TC6989CA1 STEP TRANSPORT INCSep 24, 2024Sep 24, 20241
4TC6989CASTANDFIELD TRUCKING INCAug 9, 2024Aug 9, 20241
4TC6989CASTANDARD TRUCKING INCNov 27, 2023Nov 27, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 3, 2026