Transport or transportation is called (from the Latin trans, “across, and portare,” led “) to moving people or goods from one place to another.In this sense includes many concepts, of which the most important are infrastructure, vehicles and operations. Transportation can also be distinguished by the possession and use of the network.On one side is the public transport on which means that vehicles can be used by any person upon payment of a sum of money. For another, it is private transport, one that is acquired by individuals and whose use is restricted to their respective owners. In English is called “transit” to public transport and “traffic” to private transport. However, in Castilian not make this distinction, being used the words “transit” and “trafficking” interchangeably to refer to the movement of vehicles, while it is called “heavy transport” freight traffic and freight.