Transportation mode is a term used to describe the various methods of transportation available to people. Two of the most common modes of transportation are RAIL and AIR. RAIL transportation involves the use of trains, which are powered by electricity or diesel fuel, to move passengers and goods from one place to another. AIR transportation involves the use of airplanes, which are powered by jet engines, to move passengers and goods from one place to another. Both RAIL and AIR transportation are important for the efficient movement of people and goods around the world.