Equipment unit · VIN-decoded · NHTSA vPIC

2018 Mac

558MTBR24JK004046 · Trailer · TRAILER
Carriers run under2
33 mo
Inspections8
all-time
OOS inspections0
of 8
First seenJun 28, 2023
NM
Last seenMar 5, 2026
CO
Inspected under 2 different carriers in 33 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
558MTBR24JK004046
Make
Mac
Model
MAC
Model year
2018
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 23, 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
558

Deterministic · VIN positions 1–3.

Vehicle descriptor section
MTBR2

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
004046

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
MAC

Prefix basis · 215 decoded VINs at 100.0% prefix purity.

Model
MAC

Prefix basis · 215 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
MAC

Observed directly for this VIN via NHTSA vPIC.

Observed model
MAC

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 28, 2023 – Mar 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 5, 2026COII · Walk-around0KAG ENERGY LLC 469756STC4545/MN
Feb 12, 2026COIII · Driver-only0KAG ENERGY LLC 469756STC4545/MN
Sep 10, 2025COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STC4545/ME
Aug 18, 2025COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STC4545/MN
May 29, 2025COII · Walk-around0ALTA TRANSPORTATION LLC 1188080STC4545/MN
Jun 26, 2024COIII · Driver-only0ALTA TRANSPORTATION LLC 1188080STC4545/MN
May 13, 2024COIII · Driver-only0ALTA TRANSPORTATION LLC 1188080686725/KS
Jun 28, 2023NMII · Walk-around0ALTA TRANSPORTATION LLC 1188080686725/KS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
KAG ENERGY LLC469756Feb 12, 2026Mar 5, 20262OH
ALTA TRANSPORTATION LLC1188080Jun 28, 2023Sep 10, 20256CO
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.
STC4545MN2KAG ENERGY LLCFeb 12, 2026Mar 5, 20262
STC4545MEALTA TRANSPORTATION LLCSep 10, 2025Sep 10, 20251
STC4545MNALTA TRANSPORTATION LLCJun 26, 2024Aug 18, 20253
686725KSALTA TRANSPORTATION LLCJun 28, 2023May 13, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026