Equipment unit · VIN-decoded · NHTSA vPIC

2025 Horizon Trailers

3H7GF4021SR008389 · Trailer · TRAILER
Carriers run under2
4 mo
Inspections3
all-time
OOS inspections1
of 3
First seenSep 12, 2025
NV
Last seenJan 8, 2026
GA
Inspected under 2 different carriers in 4 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
3H7GF4021SR008389
Make
Horizon Trailers
Model
Horizon Trailers
Model year
2025
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 5, 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
3H7

Deterministic · VIN positions 1–3.

Vehicle descriptor section
GF402

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1995 or 2025

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

North American serial sequence
008389

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
HORIZON TRAILERS

Prefix basis · 166 decoded VINs at 100.0% prefix purity.

Model
Horizon Trailers

Prefix basis · 166 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
2025

Observed directly for this VIN via NHTSA vPIC.

Observed make
HORIZON TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Horizon 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 · Sep 12, 2025 – Jan 8, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 8, 2026GAI · Full1CAROLINE'S EXPRESS LLC 4456159756140T/TN
Nov 3, 2025SDIII · Driver-only0THOMAS LYLE SHAFER 3460631756140T/TN
Sep 12, 2025NVI · Full7OOSTHOMAS LYLE SHAFER 3460631
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CAROLINE'S EXPRESS LLC4456159Jan 8, 2026Jan 8, 20261TN
THOMAS LYLE SHAFER3460631Sep 12, 2025Nov 3, 20252TN
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.
756140TTNCAROLINE'S EXPRESS LLCJan 8, 2026Jan 8, 20261
756140TTNTHOMAS LYLE SHAFERNov 3, 2025Nov 3, 20251
UKTHOMAS LYLE SHAFERSep 12, 2025Sep 12, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 5, 2026