Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBD49X1HD297772 · Truck-Tractor · TRUCK
Carriers run under3
31 mo
Inspections7
all-time
OOS inspections3
of 7
First seenOct 10, 2023
CA
Last seenMay 9, 2026
CA
Inspected under 3 different carriers in 31 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
1XPBD49X1HD297772
Make
Peterbilt
Model
579
Model year
2017
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 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
BD49X

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1987 or 2017

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

North American serial sequence
297772

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 · 26,166 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 26,166 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
2017

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 10, 2023 – May 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 9, 2026CAI · Full3OOST&M FREIGHT BAJA CORP 3832916ZP61066/CA
Mar 29, 2026CAII · Walk-around5OOST&M FREIGHT BAJA CORP 3832916ZP61066/CA
Jul 18, 2025CAI · Full0T&M FREIGHT BAJA CORP 3832916ZP61066/CA
Jul 2, 2025CAI · Full7OOST&M FREIGHT BAJA CORP 3832916ZP61066/CA
Jun 3, 2025CAI · Full3FIELDS EXCAVATING INC 383216ZP61066/CA
May 7, 2025CAIII · Driver-only0T&M FREIGHT BAJA CORP 3832916ZP61066/CA
Oct 10, 2023CAII · Walk-around0HUMBOLDT PACIFIC LLC 1920722YP30629/CA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
T&M FREIGHT BAJA CORP3832916May 7, 2025May 9, 20265CA
FIELDS EXCAVATING INC383216Jun 3, 2025Jun 3, 20251OH
HUMBOLDT PACIFIC LLC1920722Oct 10, 2023Oct 10, 20231CA
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.
ZP61066CAT&M FREIGHT BAJA CORPMay 7, 2025May 9, 20265
ZP61066CAFIELDS EXCAVATING INCJun 3, 2025Jun 3, 20251
YP30629CAHUMBOLDT PACIFIC LLCOct 10, 2023Oct 10, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026