What do corner posts contribute to a container's structure?

Corner posts play a crucial role in the structural integrity of a container by providing vertical support and stability. They are integral components that extend from the base to the top corners of the container, allowing it to maintain its shape and withstand various forces during handling and transportation. The strength provided by these posts is essential to ensure that the container can safely hold and protect the cargo inside, especially under the stresses experienced during loading, unloading, and while in transit.

The other choices misrepresent the role of corner posts. While they may interact with securing cargo and contribute to the overall design of the container, their primary function centers around offering stability and direct support. Thus, understanding the importance of corner posts as vertical supports enhances the comprehension of container construction and the safety it provides during intermodal transport.