Which container is commonly associated with an intermodal portable tank?

• A. Intermodal portable tank
• B. Cargo tank trailer
• C. MC 331
• D. MC 307/DOT 407

Answer: (A)

Intermodal portable tanks are built specifically to move liquids across multiple modes—truck, rail, and ship—without unloading. They’re a type of container designed to stay with the load as it changes transportation modes, using UN portable-tank specifications and the fittings that allow transfers between modes.

The container most closely associated with this concept is the intermodal portable tank itself because the term describes the container used for intermodal shipments. The other options refer to trucking-only tank configurations (cargo tank trailers and specific truck tank designs) that aren’t designed for seamless multi-modal transfer, so they aren’t the containers typically linked with intermodal portable tanks.