Equipment unit · VIN-decoded · NHTSA vPIC

2019 Mertz manufacturing Mertz Manufacturing, LLC

1M91H4322KA211356 · Trailer · TRAILER
Carriers run under3
25 mo
Inspections3
all-time
OOS inspections1
of 3
First seenJul 3, 2023
TX
Last seenAug 18, 2025
OK
Inspected under 3 different carriers in 25 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
1M91H4322KA211356
Make
Mertz manufacturing
Model
Mertz Manufacturing, LLC
Model year
2019
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 25, 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 3, 2023 – Aug 18, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 18, 2025OKIII · Driver-only0—HALLIBURTON ENERGY SERVICES INC 126693AJ9875/OK
Jun 6, 2024TXII · Walk-around0—R L WALKER TRANSPORT INC 574082AJ9875/OK
Jul 3, 2023TXII · Walk-around3OOSPROFOUND TRUCKING LLC 3526905AJ9875/OK
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HALLIBURTON ENERGY SERVICES INC126693Aug 18, 2025Aug 18, 20251TX
R L WALKER TRANSPORT INC574082Jun 6, 2024Jun 6, 20241TX
PROFOUND TRUCKING LLC3526905Jul 3, 2023Jul 3, 20231TX
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.
AJ9875OK2HALLIBURTON ENERGY SERVICES INCAug 18, 2025 → Aug 18, 20251
AJ9875OK—R L WALKER TRANSPORT INCJun 6, 2024 → Jun 6, 20241
AJ9875OK—PROFOUND TRUCKING LLCJul 3, 2023 → Jul 3, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 25, 2026