Equipment unit · VIN-decoded · NHTSA vPIC

2004 Twamco Trailer

1T9ST482641473036 · Trailer · TRAILER
Carriers run under2
27 mo
Inspections7
all-time
OOS inspections3
of 7
First seenNov 10, 2023
AZ
Last seenFeb 26, 2026
CA
Inspected under 2 different carriers in 27 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
1T9ST482641473036
Make
Twamco Trailer
Model
Twamco Trailer
Model year
2004
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 18, 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
1T9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ST482

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
2004 or 2034

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

North American serial sequence
473036

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.

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
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
TWAMCO TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Twamco Trailer

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

  • 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 · Nov 10, 2023 – Feb 26, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 26, 2026CAIII · Driver-only1VEMUR TRANSPORT LLC 40290474RT9886/CA
Jan 14, 2026USI · Full3OOSVEMUR TRANSPORT LLC 40290474RT9886/CA
Oct 8, 2025USI · Full7VEMUR TRANSPORT LLC 40290474RT9886/CA
Mar 7, 2025USI · Full3OOSHAPPY TRUCKING LLC 16351994RT9886/CA
Jul 23, 2024NVIII · Driver-only0HAPPY TRUCKING LLC 16351994RT9886/CA
Feb 2, 2024AZII · Walk-around5OOSHAPPY TRUCKING LLC 16351994RT9886/CA
Nov 10, 2023AZII · Walk-around4HAPPY TRUCKING LLC 16351994RT9886/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
VEMUR TRANSPORT LLC4029047Oct 8, 2025Feb 26, 20263CA
HAPPY TRUCKING LLC1635199Nov 10, 2023Mar 7, 20254CA
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.
4RT9886CAVEMUR TRANSPORT LLCOct 8, 2025Feb 26, 20263
4RT9886CAHAPPY TRUCKING LLCNov 10, 2023Mar 7, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026