Equipment unit · VIN-decoded · NHTSA vPIC

2021 Polar tank trailer Polar Tank Trailer

1PMKF4320M1113244 · Trailer · TRAILER

Carriers run under2

16 mo

Inspections3

all-time

OOS inspections0

of 3

First seenFeb 15, 2024

Last seenJun 9, 2025

Inspected under 2 different carriers in 16 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.

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN: 1PMKF4320M1113244
Make: Polar tank trailer
Model: Polar Tank Trailer
Model year: 2021
Body class: Trailer
Vehicle type: TRAILER
GVWR: Not decoded
Decoded at: Jul 26, 2026

vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.

Inspection history

Every roadside inspection of this VIN, newest first · Feb 15, 2024 – Jun 9, 2025

Date	State	Level	OOS	Carrier (DOT)	Plate
Jun 9, 2025	IL	I · Full	—	CAIDLAKE TRANSPORT INC 2952876	796397/WI
Apr 21, 2025	MD	II · Walk-around	—	CAIDLAKE TRANSPORT INC 2952876	796397/WI
Feb 15, 2024	WI	III · Driver-only	—	ENVIRO-SAFE TRANSPORTATION LLC 2322446	796397/WI

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

Carrier	DOT	First seen	Last seen	Insp.	State
CAIDLAKE TRANSPORT INC	2952876	Apr 21, 2025	Jun 9, 2025	2	WV
ENVIRO-SAFE TRANSPORTATION LLC	2322446	Feb 15, 2024	Feb 15, 2024	1	WI

Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.

Plate & unit-number history

The same truck under different plate registrations across carriers

Plate	State / prov.	Unit no.	Carrier	Date range	Insp.
796397	WI	—	CAIDLAKE TRANSPORT INC	Apr 21, 2025 → Jun 9, 2025	2
796397	WI	—	ENVIRO-SAFE TRANSPORTATION LLC	Feb 15, 2024 → Feb 15, 2024	1

Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 26, 2026