Equipment unit · VIN-decoded · NHTSA vPIC

1M9SM4020DD464276

Not yet decoded
Carriers run under2
25 mo
Inspections2
all-time
OOS inspections1
of 2
First seenAug 14, 2023
CA
Last seenSep 15, 2025
TX
Inspected under 2 different carriers in 25 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
1M9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SM402

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1983 or 2013

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

North American serial sequence
464276

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 14, 2023 – Sep 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 15, 2025TXII · Walk-around4WESTECH INDUSTRIES INC 653164057190SB/TX
Aug 14, 2023CAII · Walk-around4OOSCENTRAL CONCRETE SUPPLY COMPANY INC 26452624NA5858/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WESTECH INDUSTRIES INC653164Sep 15, 2025Sep 15, 20251CA
CENTRAL CONCRETE SUPPLY COMPANY INC2645262Aug 14, 2023Aug 14, 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.
057190SBTX2WESTECH INDUSTRIES INCSep 15, 2025Sep 15, 20251
4NA5858CACENTRAL CONCRETE SUPPLY COMPANY INCAug 14, 2023Aug 14, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC