Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 579

1XPBDP9X3JD493087 · Truck-Tractor · TRUCK
Carriers run under3
14 mo
Inspections6
all-time
OOS inspections5
of 6
First seenJan 29, 2025
MS
Last seenMar 12, 2026
TX
Inspected under 3 different carriers in 14 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
1XPBDP9X3JD493087
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
Jun 25, 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
3 · valid

Deterministic · position 9; calculated value 3.

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
493087

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 · Jan 29, 2025 – Mar 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 12, 2026TXI · Full9OOSWB EXPRESS LLC 4482885P274962/LA
Mar 3, 2026TXII · Walk-around19OOSWB EXPRESS LLC 4482885P274962/LA
Nov 16, 2025WYI · Full16OOST-JAM EXPRESS LLC 383949893087/LA
Nov 11, 2025TXII · Walk-around8OOST-JAM EXPRESS LLC 3839498NONE/LA
Sep 9, 2025LAII · Walk-around6OOST-JAM EXPRESS LLC 3839498VIN 3087/LA
Jan 29, 2025MSIII · Driver-only2SOUTHSIDE TRANSPORT SERVICE LLC 3746611NO TAG/LA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
WB EXPRESS LLC4482885Mar 3, 2026Mar 12, 20262LA
T-JAM EXPRESS LLC3839498Sep 9, 2025Nov 16, 20253LA
SOUTHSIDE TRANSPORT SERVICE LLC3746611Jan 29, 2025Jan 29, 20251LA
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.
P274962LAWB EXPRESS LLCMar 3, 2026Mar 12, 20262
93087LAT-JAM EXPRESS LLCNov 16, 2025Nov 16, 20251
NONELAT-JAM EXPRESS LLCNov 11, 2025Nov 11, 20251
VIN 3087LAT-JAM EXPRESS LLCSep 9, 2025Sep 9, 20251
NO TAGLASOUTHSIDE TRANSPORT SERVICE LLCJan 29, 2025Jan 29, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026