Equipment unit · VIN-decoded · NHTSA vPIC

2018 Mertz Manufacturing Mertz Manufacturing, LLC

1M91H4321JA211136 · Trailer · TRAILER
Carriers run under4
24 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJun 29, 2023
WV
Last seenJun 4, 2025
OH
Inspected under 4 different carriers in 24 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
1M91H4321JA211136
Make
Mertz Manufacturing
Model
Mertz Manufacturing, LLC
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 6, 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
1M9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1H432

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1988 or 2018

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

North American serial sequence
211136

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
MERTZ MANUFACTURING

Prefix basis · 152 decoded VINs at 100.0% prefix purity.

Model
Mertz Manufacturing, LLC

Prefix basis · 152 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
MERTZ MANUFACTURING

Observed directly for this VIN via NHTSA vPIC.

Observed model
Mertz Manufacturing, LLC

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

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 · Jun 29, 2023 – Jun 4, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 4, 2025OHII · Walk-around3OOSHAWKINS LLC 3821125CD3957/OK
Oct 29, 2024PAI · Full3MUTHLER MOUNTAIN TRUCKING LLC 4154396CD3957/OK
Nov 7, 2023PAI · Full10OOSMARCELLUS ENERGY SERVICES LLC 924510CD3957/OK
Jun 29, 2023WVII · Walk-around3CROSS ROADS LOGISTICS LLC 3823790CD3930/OK
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HAWKINS LLC3821125Jun 4, 2025Jun 4, 20251PA
MUTHLER MOUNTAIN TRUCKING LLC4154396Oct 29, 2024Oct 29, 20241PA
MARCELLUS ENERGY SERVICES LLC924510Nov 7, 2023Nov 7, 20231NY
CROSS ROADS LOGISTICS LLC3823790Jun 29, 2023Jun 29, 20231KY
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.
CD3957OKHAWKINS LLCJun 4, 2025Jun 4, 20251
CD3957OKMUTHLER MOUNTAIN TRUCKING LLCOct 29, 2024Oct 29, 20241
CD3957OKMARCELLUS ENERGY SERVICES LLCNov 7, 2023Nov 7, 20231
CD3930OKCROSS ROADS LOGISTICS LLCJun 29, 2023Jun 29, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 6, 2026