Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X8MD707737 · Truck-Tractor · TRUCK
Carriers run under2
27 mo
Inspections6
all-time
OOS inspections2
of 6
First seen03/20/2024
OK
Last seen06/23/2026
WA
Inspected under 2 different carriers in 27 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
1XPBDP9X8MD707737
Make
Peterbilt
Model
579
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
06/27/2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · 03/20/2024 – 06/23/2026

DateStateLevelViol.OOSCarrier (DOT)Plate
06/23/2026WAII · Walk-around2—ADAMS EXPRESS LINES LLC 3753422AH83570/PA
05/27/2026CAI · Full0—ADAMS EXPRESS LINES LLC 3753422AH83570/PA
05/19/2026TXII · Walk-around3—ADAMS EXPRESS LINES LLC 3753422AH83570/PA
09/18/2025MTIII · Driver-only0—DECKER TRUCK LINE INC 538243610633/IN
08/14/2025MII · Full1OOSDECKER TRUCK LINE INC 538243610633/IN
03/20/2024OKI · Full3OOSDECKER TRUCK LINE INC 538243610633/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ADAMS EXPRESS LINES LLC375342205/19/202606/23/20263OH
DECKER TRUCK LINE INC5382403/20/202409/18/20253IA
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.
AH83570PA1ADAMS EXPRESS LINES LLC05/19/2026 → 06/23/20263
3610633IN—DECKER TRUCK LINE INC03/20/2024 → 09/18/20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/27/2026