Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 389

1XPXD40X4JD450962 · Truck-Tractor · TRUCK
Carriers run under2
7 mo
Inspections3
all-time
OOS inspections0
of 3
First seenSep 9, 2025
MA
Last seenApr 23, 2026
RI
Inspected under 2 different carriers in 7 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
1XPXD40X4JD450962
Make
Peterbilt
Model
389
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
Aug 1, 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
XD40X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
450962

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 · 1,508 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 1,508 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
389

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 · Sep 9, 2025 – Apr 23, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 23, 2026RIIII · Driver-only4ROBERT B OUR CO INC 492481AH3E/MA
Oct 15, 2025MAIII · Driver-only2CHRISTOPHER W OUR 23104591440A/MA
Sep 9, 2025MAIII · Driver-only1ROBERT B OUR CO INC 492481440A/MA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROBERT B OUR CO INC49248Sep 9, 2025Apr 23, 20262MA
CHRISTOPHER W OUR2310459Oct 15, 2025Oct 15, 20251MA
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.
1AH3EMAROBERT B OUR CO INCApr 23, 2026Apr 23, 20261
1440AMACHRISTOPHER W OUROct 15, 2025Oct 15, 20251
1440AMAROBERT B OUR CO INCSep 9, 2025Sep 9, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 1, 2026