Equipment unit · VIN-decoded · NHTSA vPIC

2011 Peterbilt 386

1XPHD49X1BD111231 · Truck-Tractor · TRUCK
Carriers run under1
32 mo
Inspections7
all-time
OOS inspections2
of 7
First seenOct 4, 2023
CA
Last seenJun 20, 2026
AZ
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPHD49X1BD111231
Make
Peterbilt
Model
386
Model year
2011
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 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
HD49X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1981 or 2011

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

North American serial sequence
111231

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 · 3,252 decoded VINs at 100.0% prefix purity.

Model
386

Prefix basis · 3,252 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
2011

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
386

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 4, 2023 – Jun 20, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 20, 2026AZII · Walk-around4BIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
Feb 20, 2026TXII · Walk-around2BIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
Jan 2, 2026TXII · Walk-around3OOSBIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
Jun 2, 2025NEIII · Driver-only0BIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
Apr 24, 2025AZII · Walk-around3BIG MOUNTAIN TRANSPORT INC 23046444NA5502/CA
Jan 17, 2025CAII · Walk-around3BIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
Oct 4, 2023CAI · Full5OOSBIG MOUNTAIN TRANSPORT INC 2304644WP80905/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BIG MOUNTAIN TRANSPORT INC2304644Oct 4, 2023Jun 20, 20267CA
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.
WP80905CA1BIG MOUNTAIN TRANSPORT INCOct 4, 2023Jun 20, 20266
4NA5502CABIG MOUNTAIN TRANSPORT INCApr 24, 2025Apr 24, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026