Equipment unit · VIN-decoded · NHTSA vPIC

4M9DS2321N1017133

Not yet decoded
Carriers run under1
0 mo
Inspections1
all-time
OOS inspections0
of 1
First seenAug 8, 2025
TN
Last seenAug 8, 2025
TN
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
4M9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DS232

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

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
017133

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
MIDWEST TRAILER MANUFACTURING

Prefix basis · 35 decoded VINs at 100.0% prefix purity.

Model
Midwest Trailer Manufacturing

Prefix basis · 35 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.

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 · Aug 8, 2025 – Aug 8, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 8, 2025TNIII · Driver-only1BLACK ROCK EXPRESS LLC 2947864512229T/TN
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BLACK ROCK EXPRESS LLC2947864Aug 8, 2025Aug 8, 20251TN
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.
512229TTNBLACK ROCK EXPRESS LLCAug 8, 2025Aug 8, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC