Tractor trailer is similar to dollies and floor hand trucks. This is non-load carrying tractor which is used to pull a train of trailers. It has extended the transporting capacity of floor hand trucks. It is mostly used at airports for baggage handling. It has suspension and other features which strengthen the capacity of carrying a higher load. The tractor trailer is used for specific routes, like carrying of bauxite from the site to the plant or carrying coal from the mine to the power generation site. Tractor trailers are more easier way of carrying loads in a manner that the load is driven from one place to another in a specific area. It is mostly used in big industries and is manufactured by companies like Tata.