Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 579

1XPBDP9X5JD409741 · Truck-Tractor · TRUCK
Carriers run under1
27 mo
Inspections4
all-time
OOS inspections1
of 4
First seenOct 26, 2023
TN
Last seenJan 27, 2026
IL
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPBDP9X5JD409741
Make
Peterbilt
Model
579
Model year
2018
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 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
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BDP9X

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1988 or 2018

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

North American serial sequence
409741

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
PETERBILT

Prefix basis · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

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 · Oct 26, 2023 – Jan 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 27, 2026ILIII · Driver-only0SPECIALIZED TRANSPORT SOLUTIONS LLC 2516354N0520HY/TN
Jul 9, 2024FLII · Walk-around2OOSSPECIALIZED TRANSPORT SOLUTIONS LLC 2516354N0520HY/TN
Dec 7, 2023NCIII · Driver-only0SPECIALIZED TRANSPORT SOLUTIONS LLC 2516354N0520HY/TN
Oct 26, 2023TNIII · Driver-only0SPECIALIZED TRANSPORT SOLUTIONS LLC 2516354N0520HY/TN
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SPECIALIZED TRANSPORT SOLUTIONS LLC2516354Oct 26, 2023Jan 27, 20264TN
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.
N0520HYTNSPECIALIZED TRANSPORT SOLUTIONS LLCOct 26, 2023Jan 27, 20264
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026