Private transport, as opposed to public transport, is transport in one's own vehicle (e.g. car, motorcycle or bicycle), or through self-power (such as walking). Private transport differs from public in that it lacks timetables and fixed itineraries.
Infrastructure includes the transport networks (roads, railways, airways, canals, pipelines, etc.) that are used, as well as the nodes or terminals (such as airports, railway stations, bus stations and seaports).
The growth in transport would be impossible without communication, which is vital for advanced transportation systems, from railroads which want to run trains in two directions on a single track, to air traffic control which requires knowing the location of aircraft in the sky.
Transport is a major use of energy, and transport burns most of the world's petroleum.