Equipment unit · VIN-decoded · NHTSA vPIC

2012 Mac Trailer Manufacturing

5MASA4828CA023536 · Trailer · TRAILER
Carriers run under3
31 mo
Inspections8
all-time
OOS inspections0
of 8
First seenOct 16, 2023
MT
Last seenMay 19, 2026
NM
Inspected under 3 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
5MASA4828CA023536
Make
Mac Trailer Manufacturing
Model
MAC TRAILER MANUFACTURING
Model year
2012
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Aug 7, 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
5MA

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SA482

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1982 or 2012

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

North American serial sequence
023536

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 TRAILER MANUFACTURING

Prefix basis · 50 decoded VINs at 100.0% prefix purity.

Model
MAC TRAILER MANUFACTURING

Prefix basis · 50 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
2012

Observed directly for this VIN via NHTSA vPIC.

Observed make
MAC TRAILER MANUFACTURING

Observed directly for this VIN via NHTSA vPIC.

Observed model
MAC TRAILER MANUFACTURING

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 · Oct 16, 2023 – May 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 19, 2026NMII · Walk-around0CANUSA TRANSPORTATION LTD 93493329189L/BC
Sep 22, 2025KSII · Walk-around0ALTA ROSE FREIGHTLINES LTD 31662086AK2-18/AB
May 30, 2025MTIII · Driver-only0ALTA ROSE FREIGHTLINES LTD 31662086AK218/AB
Feb 25, 2025TXI · Full1ALTA ROSE FREIGHTLINES LTD 31662086AK218/AB
Feb 24, 2025COIII · Driver-only0ALTA ROSE FREIGHTLINES LTD 31662086AK218/AB
Dec 27, 2024MTIII · Driver-only0ALTA ROSE FREIGHTLINES LTD 31662086AK218/AB
Feb 29, 2024MTII · Walk-around1COMPASS TRANSPORT LTD 28911696AK218/AB
Oct 16, 2023MTI · Full0COMPASS TRANSPORT LTD 28911696AK218/AB
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CANUSA TRANSPORTATION LTD934933May 19, 2026May 19, 20261BC
ALTA ROSE FREIGHTLINES LTD3166208Dec 27, 2024Sep 22, 20255AB
COMPASS TRANSPORT LTD2891169Oct 16, 2023Feb 29, 20242AB
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.
29189LBCCANUSA TRANSPORTATION LTDMay 19, 2026May 19, 20261
6AK2-18ABALTA ROSE FREIGHTLINES LTDSep 22, 2025Sep 22, 20251
6AK218ABALTA ROSE FREIGHTLINES LTDDec 27, 2024May 30, 20254
6AK218ABCOMPASS TRANSPORT LTDOct 16, 2023Feb 29, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Aug 7, 2026