Equipment unit · VIN-decoded · NHTSA vPIC

2022 Brazos

4B9BKDL21NH054820 · Trailer · TRAILER
Carriers run under2
40 mo
Inspections17
all-time
OOS inspections1
of 17
First seenJun 12, 2023
CA
Last seenOct 22, 2026
CA
Inspected under 2 different carriers in 40 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
4B9BKDL21NH054820
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
BKDL2

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
054820

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 · 231 decoded VINs at 100.0% prefix purity.

Model
Brazos

Prefix basis · 231 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 · Jun 12, 2023 – Oct 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 22, 2026CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Oct 20, 2026CAI · Full3—ADV TRUCKING INC 19714254SV3148/CA
Jul 22, 2026CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Apr 29, 2026CAIII · Driver-only0—ADV TRUCKING INC 19714254SV3148/CA
Apr 29, 2026CAIII · Driver-only0—ADV TRUCKING INC 19714254SV3148/CA
Apr 20, 2026CAI · Full1—ADV TRUCKING INC 19714254SV3148/CA
Apr 3, 2026CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Dec 22, 2025CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Sep 11, 2025CAI · Full1—ADV TRUCKING INC 19714254SV3148/CA
May 14, 2025CAII · Walk-around2OOSADV TRUCKING INC 19714254SV3148/CA
Apr 17, 2025CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Mar 24, 2025CAII · Walk-around1—ADV TRUCKING INC 19714254SV3148/CA
Nov 1, 2024CAI · Full0—ADV TRUCKING INC 19714254SV3148/CA
Sep 19, 2024CAIII · Driver-only0—ADV TRUCKING INC 19714254SV3148/CA
Sep 5, 2024CAII · Walk-around0—ADV TRUCKING INC 19714254SV3148/CA
Sep 11, 2023CAIII · Driver-only0—ADV TRUCKING INC 19714254SV3148/CA
Jun 12, 2023CAIII · Driver-only0—SON PHAM 14089444SV3148/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ADV TRUCKING INC1971425Sep 11, 2023Oct 22, 202616CA
SON PHAM1408944Jun 12, 2023Jun 12, 20231CA
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.
4SV3148CA2ADV TRUCKING INCSep 11, 2023 → Oct 22, 202616
4SV3148CA—SON PHAMJun 12, 2023 → Jun 12, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026