Equipment unit · VIN-decoded · NHTSA vPIC

1999 Polar Tank Trailer

1PMB14223X5001843 · Trailer · TRAILER
Carriers run under4
39 mo
Inspections8
all-time
OOS inspections4
of 8
First seenJul 25, 2023
TX
Last seenOct 20, 2026
TX
Inspected under 4 different carriers in 39 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
1PMB14223X5001843
Make
Polar Tank Trailer
Model
Polar Tank Trailer
Model year
1999
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 21, 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
1PM

Deterministic · VIN positions 1–3.

Vehicle descriptor section
B1422

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

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
001843

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
POLAR TANK TRAILER

Prefix basis · 83 decoded VINs at 100.0% prefix purity.

Model
Polar Tank Trailer

Prefix basis · 83 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 · Jul 25, 2023 – Oct 20, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 20, 2026TXII · Walk-around1—MANUEL RODRIGUEZ ESPINOZA 4456326265C738/TX
May 27, 2026TXII · Walk-around6OOSISAAC MARTIN GALVAN CARREON 3395326265C738/TX
Jan 28, 2025TXII · Walk-around2—GRUPO INDUSTRIAL COA-NOR SA DE CV 4110303049B340/TX
Nov 1, 2024TXII · Walk-around1—GRUPO INDUSTRIAL COA-NOR SA DE CV 4110303049B340/TX
Oct 29, 2024TXII · Walk-around8OOSGRUPO INDUSTRIAL COA-NOR SA DE CV 4110303049B340/TX
May 14, 2024TXI · Full11OOSDIAMOND FREIGHT FORWARDING LLC 3100239049B340/TX
Nov 9, 2023TXII · Walk-around7OOSDIAMOND FREIGHT FORWARDING LLC 3100239049B340/TX
Jul 25, 2023TXII · Walk-around3—DIAMOND FREIGHT FORWARDING LLC 3100239049B340/TX
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MANUEL RODRIGUEZ ESPINOZA4456326Oct 20, 2026Oct 20, 20261CH
ISAAC MARTIN GALVAN CARREON3395326May 27, 2026May 27, 20261CH
GRUPO INDUSTRIAL COA-NOR SA DE CV4110303Oct 29, 2024Jan 28, 20253CH
DIAMOND FREIGHT FORWARDING LLC3100239Jul 25, 2023May 14, 20243TX
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.
265C738TX2MANUEL RODRIGUEZ ESPINOZAOct 20, 2026 → Oct 20, 20261
265C738TX—ISAAC MARTIN GALVAN CARREONMay 27, 2026 → May 27, 20261
049B340TX—GRUPO INDUSTRIAL COA-NOR SA DE CVOct 29, 2024 → Jan 28, 20253
049B340TX—DIAMOND FREIGHT FORWARDING LLCJul 25, 2023 → May 14, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026