Equipment unit · VIN-decoded · NHTSA vPIC

2015 Peterbilt 389

1NPXD49X8FD301992 · Truck-Tractor · INCOMPLETE VEHICLE
Carriers run under3
25 mo
Inspections3
all-time
OOS inspections1
of 3
First seenNov 1, 2023
TX
Last seenDec 27, 2025
TX
Inspected under 3 different carriers in 25 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
1NPXD49X8FD301992
Make
Peterbilt
Model
389
Model year
2015
Body class
Truck-Tractor
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 26, 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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
XD49X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1985 or 2015

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

North American serial sequence
301992

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 · 1,241 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 1,241 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
2015

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
INCOMPLETE VEHICLE

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 · Nov 1, 2023 – Dec 27, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 27, 2025TXII · Walk-around0SIERRA MOUNTAIN TRANSPORT INC 3983150YASW444/OR
Jul 15, 2025TXII · Walk-around5OOSCAR TRANSPORT INC 248283R639181/TX
Nov 1, 2023TXII · Walk-around1URS MIDWEST LLC 790261R639181/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIERRA MOUNTAIN TRANSPORT INC3983150Dec 27, 2025Dec 27, 20251FL
CAR TRANSPORT INC248283Jul 15, 2025Jul 15, 20251TX
URS MIDWEST LLC790261Nov 1, 2023Nov 1, 20231MI
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.
YASW444ORSIERRA MOUNTAIN TRANSPORT INCDec 27, 2025Dec 27, 20251
R639181TXCAR TRANSPORT INCJul 15, 2025Jul 15, 20251
R639181TXURS MIDWEST LLCNov 1, 2023Nov 1, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026