Equipment unit · VIN-decoded · NHTSA vPIC

2021 Polar tank trailer Polar Tank Trailer

3H6KF4329M3109793 · Trailer · TRAILER
Carriers run under2
28 mo
Inspections4
all-time
OOS inspections0
of 4
First seenNov 21, 2023
TX
Last seenMar 23, 2026
TX
Inspected under 2 different carriers in 28 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
3H6KF4329M3109793
Make
Polar tank trailer
Model
Polar Tank Trailer
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 12, 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 · Nov 21, 2023 – Mar 23, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 23, 2026TXII · Walk-around0—MARTIN TRANSPORT INC 33094018F487/TX
Oct 17, 2024USII · Walk-around1—TRANSPORTES SAL-AVE SA DE CV 610377018F487/TX
Sep 2, 2024TNI · Full0—MARTIN TRANSPORT INC 33094018F487/TX
Nov 21, 2023TXII · Walk-around0—MARTIN TRANSPORT INC 33094018F487/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MARTIN TRANSPORT INC33094Nov 21, 2023Mar 23, 20263TX
TRANSPORTES SAL-AVE SA DE CV610377Oct 17, 2024Oct 17, 20241TA
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.
018F487TX2MARTIN TRANSPORT INCNov 21, 2023 → Mar 23, 20263
018F487TX—TRANSPORTES SAL-AVE SA DE CVOct 17, 2024 → Oct 17, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026