Equipment unit · VIN-decoded · NHTSA vPIC

2022 Brazos

4B9BKFR21NH054478 · Trailer · TRAILER
Carriers run under2
27 mo
Inspections11
all-time
OOS inspections4
of 11
First seenJul 25, 2023
WY
Last seenOct 22, 2025
TX
Inspected under 2 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
4B9BKFR21NH054478
Make
Brazos
Model
Brazos
Model year
2022
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 16, 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
BKFR2

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1992 or 2022

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

North American serial sequence
054478

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 · 21 decoded VINs at 100.0% prefix purity.

Model
Brazos

Prefix basis · 21 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
2022

Observed directly for this VIN via NHTSA vPIC.

Observed make
BRAZOS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Brazos

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 · Jul 25, 2023 – Oct 22, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 22, 2025TXII · Walk-around4DIAMOND TRANSPORT M LLC 2986299260B537/TX
Sep 3, 2025MNI · Full7DIAMOND TRANSPORT M LLC 2986299BYR52211/TX
Jun 30, 2025IAIII · Driver-only1DIAMOND TRANSPORT M LLC 29862992P5498T/TX
Jun 25, 2025NEIII · Driver-only0DIAMOND TRANSPORT M LLC 29862992P5498T/TX
Aug 7, 2024MTII · Walk-around0KMT TRUCKING LLC 3487926CKHW77/CO
Jul 9, 2024WYI · Full13OOSKMT TRUCKING LLC 3487926CKHW77/CO
May 9, 2024COIII · Driver-only0KMT TRUCKING LLC 3487926CKHW77/CO
Apr 2, 2024COI · Full13OOSKMT TRUCKING LLC 3487926CKHW77/CO
Dec 21, 2023WAI · Full7KMT TRUCKING LLC 3487926CKHW77/CO
Oct 3, 2023WYII · Walk-around1OOSKMT TRUCKING LLC 3487926CHW77/CO
Jul 25, 2023WYII · Walk-around6OOSKMT TRUCKING LLC 3487926CKHW77/CO
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DIAMOND TRANSPORT M LLC2986299Jun 25, 2025Oct 22, 20254TX
KMT TRUCKING LLC3487926Jul 25, 2023Aug 7, 20247CO
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.
260B537TXDIAMOND TRANSPORT M LLCOct 22, 2025Oct 22, 20251
BYR52211TXDIAMOND TRANSPORT M LLCSep 3, 2025Sep 3, 20251
2P5498TTXDIAMOND TRANSPORT M LLCJun 25, 2025Jun 30, 20252
CKHW77COKMT TRUCKING LLCJul 25, 2023Aug 7, 20246
CHW77COKMT TRUCKING LLCOct 3, 2023Oct 3, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026