Equipment unit · VIN-decoded · NHTSA vPIC

2021 Freightliner Cascadia

3AKJHHDR7MSMZ6677 · Truck-Tractor · TRUCK
126Sleeper
Carriers run under1
30 mo
Inspections5
all-time
OOS inspections2
of 5
First seenOct 29, 2023
MO
Last seenApr 16, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3AKJHHDR7MSMZ6677
Make
Freightliner
Model
Cascadia
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 1, 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
3AK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
JHHDR

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1991 or 2021

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

North American serial sequence
MZ6677

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
FREIGHTLINER

Prefix basis · 146,134 decoded VINs at 100.0% prefix purity.

Model
Cascadia

Prefix basis · 146,134 decoded VINs at 100.0% prefix purity.

Model line
126

Sourced label · prefix basis 146,134 decoded VINs at 100.0% prefix purity.

Generation
126

Sourced label · prefix basis 146,134 decoded VINs at 100.0% prefix purity.

Cab type
Sleeper

Sourced label · prefix basis 146,134 decoded VINs at 100.0% prefix purity.

02

Inspection history

Every roadside inspection of this VIN, newest first · Oct 29, 2023 – Apr 16, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 16, 2026TXII · Walk-around3—ROCK SOLID LOGISTICS INC 36950533936613/IN
Sep 4, 2025TNIII · Driver-only0—ROCK SOLID LOGISTICS INC 36950533613093/IN
Jun 16, 2025MNI · Full1OOSROCK SOLID LOGISTICS INC 36950533613093/IN
Sep 12, 2024TXII · Walk-around3—ROCK SOLID LOGISTICS INC 36950533613093/IN
Oct 29, 2023MOIII · Driver-only2OOSROCK SOLID LOGISTICS INC 3695053P1094033/IL
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCK SOLID LOGISTICS INC3695053Oct 29, 2023Apr 16, 20265IN
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.
3936613IN—ROCK SOLID LOGISTICS INCApr 16, 2026 → Apr 16, 20261
3613093IN—ROCK SOLID LOGISTICS INCSep 12, 2024 → Sep 4, 20253
P1094033IL—ROCK SOLID LOGISTICS INCOct 29, 2023 → Oct 29, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 1, 2026