Equipment unit · VIN-decoded · NHTSA vPIC

2020 Doonan specialized trailer Doonan Specialized Trailer

1D9BG532XL1609915 · Trailer · TRAILER
Carriers run under2
31 mo
Inspections3
all-time
OOS inspections0
of 3
First seenJul 25, 2023
SD
Last seenFeb 17, 2026
IA
Inspected under 2 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
1D9BG532XL1609915
Make
Doonan specialized trailer
Model
Doonan Specialized Trailer
Model year
2020
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 19, 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 · Jul 25, 2023 – Feb 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 17, 2026IAII · Walk-around2—DAVID & CATHRYN KNUTSON 1720682HP1317/IA
Oct 14, 2023SDIII · Driver-only1—DAVID & CATHRYN KNUTSON 1720682HP1317/IA
Jul 25, 2023SDIII · Driver-only1—SHEK TRANSPORTATION INC 785505HP1317/IA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DAVID & CATHRYN KNUTSON1720682Oct 14, 2023Feb 17, 20262IA
SHEK TRANSPORTATION INC785505Jul 25, 2023Jul 25, 20231IA
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.
HP1317IA—DAVID & CATHRYN KNUTSONOct 14, 2023 → Feb 17, 20262
HP1317IA—SHEK TRANSPORTATION INCJul 25, 2023 → Jul 25, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 19, 2026