Which feature is more common in forty-foot and longer containers?

The presence of a gooseneck tunnel is indeed more common in forty-foot and longer containers because it is a design feature specifically intended to accommodate the unique requirements of transporting oversized cargo or heavy equipment. The gooseneck design allows the container to sit lower and provides additional height at the front end. This is especially important for ensuring that taller items can be safely transported without exceeding height restrictions.

Additionally, containers that are longer often need to optimize their structural characteristics to support larger loads and maintain stability during transport. The gooseneck tunnel enables better weight distribution and lower center of gravity, which are critical for the safe transport of heavier loads over long distances.

While features such as wall panels, forklift pockets, and crossmembers are significant in container design, they are typically standard across various container sizes and not uniquely enhanced in longer containers. The gooseneck tunnel, on the other hand, represents a specific adaptation for longer containers, exemplifying how design adjustments cater to specific operational needs in the intermodal transport industry.