Equipment unit · VIN-decoded · NHTSA vPIC

2007 Western Star 4900

5KJJAECK67PY17831 · Truck-Tractor · TRUCK
Carriers run under1
14 mo
Inspections69
all-time
OOS inspections0
of 69
First seenJun 18, 2025
PA
Last seenAug 6, 2026
PA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5KJJAECK67PY17831
Make
Western Star
Model
4900
Model year
2007
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 14, 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
5KJ

Deterministic · VIN positions 1–3.

Source · 49 CFR Part 565 ↗
Vehicle descriptor section
JAECK

Deterministic · VIN positions 4–8.

Source · 49 CFR Part 565 ↗
Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Source · 49 CFR Part 565 ↗
Model year candidates
2007 or 2037

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

Source · 49 CFR Part 565 ↗
North American serial sequence
Y17831

Deterministic · positions 12–17 for a North American WMI.

Source · 49 CFR Part 565 ↗

Sourced platform inference

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

Make
WESTERN STAR

Prefix basis · 80 decoded VINs at 100.0% prefix purity.

Source · Vektor corpus / NHTSA vPIC ↗
Model
4900

Prefix basis · 80 decoded VINs at 100.0% prefix purity.

Source · Vektor corpus / NHTSA vPIC ↗
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
2007

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / NHTSA vPIC ↗
Observed make
WESTERN STAR

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / NHTSA vPIC ↗
Observed model
4900

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / NHTSA vPIC ↗
Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / NHTSA vPIC ↗
Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / NHTSA vPIC ↗
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Source · Vektor corpus / 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 · Jun 18, 2025 – Aug 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 6, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 4, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 30, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 28, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 23, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 21, 2026PAI · Full2—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 16, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 14, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 13, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 9, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 7, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 2, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 30, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 25, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 23, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 18, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 16, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 11, 2026PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 9, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 4, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 2, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 28, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 26, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 26, 2026NYII · Walk-around0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 21, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 21, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 19, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 14, 2026PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 14, 2026PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 12, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 12, 2026PAI · Full3—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 7, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
May 5, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Apr 30, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Apr 28, 2026PAI · Full2—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Apr 23, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Apr 21, 2026PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Oct 6, 2025PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Oct 2, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 30, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 26, 2025PAI · Full2—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 24, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 22, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 18, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 16, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 12, 2025PAI · Full2—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 10, 2025PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 8, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 4, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Sep 2, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 27, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 25, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 21, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 19, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 15, 2025PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Aug 13, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 24, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 22, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 18, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 16, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 14, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 10, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 8, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jul 2, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 30, 2025PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 26, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 24, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 20, 2025PAI · Full1—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
Jun 18, 2025PAI · Full0—SOUTHERN TIER EXPRESS INC 27668437967PF/NY
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHERN TIER EXPRESS INC276684Jun 18, 2025Aug 6, 202669NY
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.
37967PFNY1SOUTHERN TIER EXPRESS INCJun 18, 2025 → Aug 6, 202669
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026