Intermodal shipping is a method of transporting cargo using multiple modes of shipping from origin to destination, without any handling of the freight itself while changing modes. Intermodal shipping utilizes special containers or trailers which allow goods to be moved directly from one mode of transportation to another without having to be repacked. Companies use intermodal shipping to move freight from one location to another in the most efficient, timely, cost effective, and environmentally friendly manner. Transportation modes used in the intermodal shipping method include trucks, railroad, ocean carriers, steamships, and airplanes. The most common combination, however, is truck and rail.