Equipment unit · VIN-decoded · NHTSA vPIC

1999 Thomas Built MVP-ER (Engine Rear)

1T7HT4B29X1167089 · Bus - School Bus · BUS
Carriers run under2
27 mo
Inspections4
all-time
OOS inspections0
of 4
First seenJul 19, 2023
CA
Last seenOct 8, 2025
CA
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
1T7HT4B29X1167089
Make
Thomas Built
Model
MVP-ER (Engine Rear)
Model year
1999
Body class
Bus - School Bus
Vehicle type
BUS
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 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
1T7

Deterministic · VIN positions 1–3.

Vehicle descriptor section
HT4B2

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1999 or 2029

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

North American serial sequence
167089

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
THOMAS BUILT

Prefix basis · 163 decoded VINs at 100.0% prefix purity.

Model
MVP-ER (Engine Rear)

Prefix basis · 163 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
1999

Observed directly for this VIN via NHTSA vPIC.

Observed make
THOMAS BUILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
MVP-ER (Engine Rear)

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Bus - School Bus

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
BUS

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 19, 2023 – Oct 8, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 8, 2025CAV · Vehicle-only0HALLDALE TRANSPORTATION LLC 41245708YZZ514/CA
Oct 8, 2024CAV · Vehicle-only1HALLDALE TRANSPORTATION LLC 41245708YZZ514/CA
Oct 11, 2023CAV · Vehicle-only0HALLDALE TRANSPORTATION LLC 41245708YZZ514/CA
Jul 19, 2023CAV · Vehicle-only0ESSENTIAL LLC 24954048YZZ514/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HALLDALE TRANSPORTATION LLC4124570Oct 11, 2023Oct 8, 20253CA
ESSENTIAL LLC2495404Jul 19, 2023Jul 19, 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.
8YZZ514CAHALLDALE TRANSPORTATION LLCOct 11, 2023Oct 8, 20253
8YZZ514CAESSENTIAL LLCJul 19, 2023Jul 19, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 7, 2026