Equipment unit · VIN-decoded · NHTSA vPIC

2020 Brazos

4B9BKDJ23LH054933 · Trailer · TRAILER
Carriers run under4
27 mo
Inspections7
all-time
OOS inspections4
of 7
First seenMay 29, 2024
TX
Last seenAug 11, 2026
TX
Inspected under 4 different carriers in 27 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
4B9BKDJ23LH054933
Make
Brazos
Model
Brazos
Model year
2020
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 28, 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
4B9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BKDJ2

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1990 or 2020

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

North American serial sequence
054933

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
BRAZOS

Prefix basis · 16 decoded VINs at 100.0% prefix purity.

Model
Brazos

Prefix basis · 16 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.

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 · May 29, 2024 – Aug 11, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 11, 2026TXI · Full15OOSROCKING ROCKS LLC 398947681M904N/TX
Feb 19, 2026TXII · Walk-around3—ROCKING ROCKS LLC 398947687T595N/TX
Feb 18, 2026TXI · Full6OOSROCKING ROCKS LLC 398947687T595N/TX
Feb 17, 2026TXII · Walk-around5OOSROCKING ROCKS LLC 398947687T595N/TX
Nov 4, 2025TXI · Full4OOSSCHNAUZERMAN TRANSPORT LLC 4362843162B841/TX
Oct 15, 2024TXII · Walk-around6—KOH TRUCKING LLC 426141750S793M/TX
May 29, 2024TXII · Walk-around4—HELU EXPRESS LLC 3652767162B841/TX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ROCKING ROCKS LLC3989476Feb 17, 2026Aug 11, 20264TX
SCHNAUZERMAN TRANSPORT LLC4362843Nov 4, 2025Nov 4, 20251TX
KOH TRUCKING LLC4261417Oct 15, 2024Oct 15, 20241TX
HELU EXPRESS LLC3652767May 29, 2024May 29, 20241TX
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.
81M904NTX2ROCKING ROCKS LLCAug 11, 2026 → Aug 11, 20261
87T595NTX—ROCKING ROCKS LLCFeb 17, 2026 → Feb 19, 20263
162B841TX—SCHNAUZERMAN TRANSPORT LLCNov 4, 2025 → Nov 4, 20251
50S793MTX—KOH TRUCKING LLCOct 15, 2024 → Oct 15, 20241
162B841TX—HELU EXPRESS LLCMay 29, 2024 → May 29, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026