Equipment unit · VIN-decoded · NHTSA vPIC

2024 Trail Maxx

7WL3H4021RT000321 · Trailer · TRAILER
Carriers run under2
10 mo
Inspections3
all-time
OOS inspections2
of 3
First seenApr 17, 2025
CA
Last seenFeb 5, 2026
TN
Inspected under 2 different carriers in 10 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
7WL3H4021RT000321
Make
Trail Maxx
Model
Trail Maxx
Model year
2024
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 9, 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
7WL

Deterministic · VIN positions 1–3.

Vehicle descriptor section
3H402

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1994 or 2024

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

North American serial sequence
Not established

Not asserted outside North American WMIs; positions 12–17 may follow another regional convention.

No source established for this field.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
TRAIL MAXX

Prefix basis · 469 decoded VINs at 100.0% prefix purity.

Model
Trail Maxx

Prefix basis · 469 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
2024

Observed directly for this VIN via NHTSA vPIC.

Observed make
TRAIL MAXX

Observed directly for this VIN via NHTSA vPIC.

Observed model
Trail Maxx

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

  • serial sequence (positions 12–17 are only asserted for North American VINs)
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Apr 17, 2025 – Feb 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 5, 2026TNI · Full5OOSTITAN FREIGHT SERVICE LLC 44623184WJ9200/CA
Apr 26, 2025MOI · Full1COL TRANSPRO LLC 432446522N089N/CA
Apr 17, 2025CAI · Full8OOSCOL TRANSPRO LLC 4324465NONE/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TITAN FREIGHT SERVICE LLC4462318Feb 5, 2026Feb 5, 20261MI
COL TRANSPRO LLC4324465Apr 17, 2025Apr 26, 20252TX
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.
4WJ9200CATITAN FREIGHT SERVICE LLCFeb 5, 2026Feb 5, 20261
22N089NCACOL TRANSPRO LLCApr 26, 2025Apr 26, 20251
NONECACOL TRANSPRO LLCApr 17, 2025Apr 17, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 9, 2026