Equipment unit · VIN-decoded · NHTSA vPIC

2013 Polar tank trailer Polar Tank Trailer

1PMS14321D1040500 · Trailer · TRAILER
Carriers run under2
10 mo
Inspections6
all-time
OOS inspections1
of 6
First seen02/04/2025
OR
Last seen12/17/2025
CA
Inspected under 2 different carriers in 10 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
1PMS14321D1040500
Make
Polar tank trailer
Model
Polar Tank Trailer
Model year
2013
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
06/22/2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · 02/04/2025 – 12/17/2025

DateStateLevelViol.OOSCarrier (DOT)Plate
12/17/2025CAII · Walk-around1—8A TRANSPORT LLC 4257165TJ921/ID
08/14/2025CAI · Full2—WESTERN TANK LINES INC 2909026TJ921/ID
08/14/2025CAI · Full3—WESTERN TANK LINES INC 2909026TJ921/ID
08/01/2025CAII · Walk-around2—WESTERN TANK LINES INC 2909026TJ921/ID
06/23/2025CAII · Walk-around2—WESTERN TANK LINES INC 2909026TJ921/ID
02/04/2025ORII · Walk-around2OOS8A TRANSPORT LLC 4257165TJ921/ID
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
8A TRANSPORT LLC425716502/04/202512/17/20252CA
WESTERN TANK LINES INC290902606/23/202508/14/20254ID
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.
TJ921ID—8A TRANSPORT LLC02/04/2025 → 12/17/20252
TJ921ID—WESTERN TANK LINES INC06/23/2025 → 08/14/20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/22/2026