Equipment unit · VIN-decoded · NHTSA vPIC

2002 Mack CH

1M1AA18Y22W144604 · Truck-Tractor · TRUCK
Carriers run under1
12 mo
Inspections5
all-time
OOS inspections4
of 5
First seenDec 16, 2024
TX
Last seenDec 19, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1M1AA18Y22W144604
Make
Mack
Model
CH
Model year
2002
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
1M1

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AA18Y

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
2002 or 2032

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

North American serial sequence
144604

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
MACK

Prefix basis · 365 decoded VINs at 100.0% prefix purity.

Model
CH

Prefix basis · 365 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
2002

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
CH

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 · Dec 16, 2024 – Dec 19, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 19, 2025TXII · Walk-around7OOSLONGHORN SERVICES INC 40287991M95271/TX
Nov 8, 2025TXII · Walk-around6OOSLONGHORN SERVICES INC 40287991M95271/TX
Nov 4, 2025TXI · Full8OOSLONGHORN SERVICES INC 40287991M95271/TX
Feb 15, 2025TXII · Walk-around6LONGHORN SERVICES INC 40287991M95271/TX
Dec 16, 2024TXII · Walk-around9OOSLONGHORN SERVICES INC 40287991M95271/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LONGHORN SERVICES INC4028799Dec 16, 2024Dec 19, 20255TX
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.
1M95271TXLONGHORN SERVICES INCDec 16, 2024Dec 19, 20255
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026