Equipment unit · VIN-decoded · NHTSA vPIC

2021 Polar tank trailer Polar Tank Trailer

1PMKA4328M7112273 · Trailer · TRAILER
Carriers run under2
31 mo
Inspections6
all-time
OOS inspections0
of 6
First seenAug 8, 2023
MD
Last seenMar 9, 2026
MD
Inspected under 2 different carriers in 31 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
1PMKA4328M7112273
Make
Polar tank trailer
Model
Polar Tank Trailer
Model year
2021
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 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 · Aug 8, 2023 – Mar 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 9, 2026MDII · Walk-around0—BALTIMORE TANK LINES LLC 846665489222/ME
Nov 4, 2025MDII · Walk-around0—BALTIMORE TANK LINES LLC 846665489222/ME
May 21, 2025PAII · Walk-around0—DIESEL TRANSPORT INC 10639265489222/ME
May 15, 2024MDII · Walk-around0—DIESEL TRANSPORT INC 1063926PT904T6/PA
Jan 10, 2024MDII · Walk-around0—DIESEL TRANSPORT INC 1063926PT904T6/PA
Aug 8, 2023MDII · Walk-around0—DIESEL TRANSPORT INC 1063926PT393B6/PA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BALTIMORE TANK LINES LLC84666Nov 4, 2025Mar 9, 20262MD
DIESEL TRANSPORT INC1063926Aug 8, 2023May 21, 20254PA
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.
5489222ME—BALTIMORE TANK LINES LLCNov 4, 2025 → Mar 9, 20262
5489222ME—DIESEL TRANSPORT INCMay 21, 2025 → May 21, 20251
PT904T6PA—DIESEL TRANSPORT INCJan 10, 2024 → May 15, 20242
PT393B6PA—DIESEL TRANSPORT INCAug 8, 2023 → Aug 8, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 22, 2026