What is the definition of a container in transportation?

The definition of a container in transportation specifically pertains to its role in facilitating the efficient movement of goods over various modes of transport, particularly in ocean freight. The main feature of a container is that it is a standard-sized, durable box designed for storing and transporting cargo securely. This adaptability allows containers to be easily transferred between ships, trucks, and trains without having to unload and reload the contents, which streamlines the shipping process.

In the context of ocean freight, containers are typically used for carrying large quantities of goods across significant distances, maximizing space and reducing logistical complexities. While containers can also be utilized in other shipping methods such as road or rail, their primary application and most recognized definition within the transportation industry derive from their extensive use in maritime shipping. This distinguishes them from other options that may describe various aspects of transportation but do not capture the essence of what a container is and its function in the shipping environment.

Thus, the definition aligns best with the concept of a box used for ocean freight shipments.