Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBD49X5HD417833 · Truck-Tractor · TRUCK
Carriers run under2
22 mo
Inspections8
all-time
OOS inspections2
of 8
First seenJul 1, 2024
LA
Last seenMay 29, 2026
MS
Inspected under 2 different carriers in 22 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
1XPBD49X5HD417833
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
5 · valid

Deterministic · position 9; calculated value 5.

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
417833

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 · Jul 1, 2024 – May 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 29, 2026MSIII · Driver-only1T LAMBERT INCORPORATED 266764A559427/MS
Apr 13, 2026MSII · Walk-around2OOST LAMBERT INCORPORATED 266764A559427/MS
Feb 13, 2026MSIII · Driver-only0T LAMBERT INCORPORATED 266764A559427/MS
Sep 9, 2025LAIII · Driver-only0T LAMBERT INCORPORATED 266764A554678/MS
Aug 1, 2025TXII · Walk-around13OOST LAMBERT INCORPORATED 266764A554678/MS
Apr 25, 2025LAIII · Driver-only0T LAMBERT INCORPORATED 266764A554678/MS
Nov 12, 2024TXII · Walk-around1JOWIN EXPRESS INC 221478A536569/MS
Jul 1, 2024LAIII · Driver-only0JOWIN EXPRESS INC 221478A462696/MS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
T LAMBERT INCORPORATED266764Apr 25, 2025May 29, 20266MS
JOWIN EXPRESS INC221478Jul 1, 2024Nov 12, 20242MS
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.
A559427MST LAMBERT INCORPORATEDFeb 13, 2026May 29, 20263
A554678MST LAMBERT INCORPORATEDApr 25, 2025Sep 9, 20253
A536569MSJOWIN EXPRESS INCNov 12, 2024Nov 12, 20241
A462696MSJOWIN EXPRESS INCJul 1, 2024Jul 1, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026