transportation technology
Humans' first means of transport were walking and swimming.
The domestication of animals introduces a new way to lay the burden of
transport on more powerful creatures, allowing heavier loads to be hauled, or
humans to ride the animals for higher speed and duration. Inventions such as
the wheel and sled helped make animal transport more efficient through the
introduction of vehicles. Also water transport, including rowed and sailed
vessels, dates back to time immemorial, and was the only efficient way to
transport large quantities or over large distances prior to the Industrial
Revolution.
The first forms of road transport were horses, oxen or even
humans carrying goods over dirt tracks that often followed game trails. Paved
roads were built by many early civilizations, including Mesopotamia and the
Indus Valley Civilization. The Persian and Roman empires built stone-paved
roads to allow armies to travel quickly. Deep roadbeds of crushed stone
underneath ensured that the roads kept dry. The medieval Caliphate later built
tar-paved roads. The first watercraft were canoes cut out from tree trunks. Early
water transport was accomplished with ships that were either rowed or used the
wind for propulsion, or a combination of the two. The importance of water has
led to most cities, that grew up as sites for trading, being located on rivers
or at sea, ofter at the intersection of two bodies of water. Until the
Industrial Revolution, transport remained slow and costly, and production and
consumption were located as close to each other as feasible.
The Industrial Revolution in the 19th century saw a number of inventions fundamentally change transport. With telegraphy, communication became instant and independent of transport. The invention of the steam engine, closely followed by its application in rail transport, made land transport independent of human or animal muscles. Both speed and capacity increased rapidly, allowing specialization through manufacturing being located independent of natural resources. The 19th century also saw the development of the steam ship, that sped up global transport.
With the development of the combustion engine and the
automobile at the turn into the 20th century, road transport became more
viable, allowing the introduction of mechanical private transport. The first
highways were constructed during the 19th century with macadam. Later, tarmac
and concrete became the dominant paving material. In 1903, the first
controllable airplane was invented, and after World War I, it became a fast way
to transport people and express goods over long distances.
After World War II, the automobile and airlines took higher
shares of transport, reducing rail and water to freight and short-haul
passenger. Spaceflight was launched in the 1950s, with rapid growth until
the 1970s, when interest dwindled. In the 1950s, the introduction of
containerization gave massive efficiency gains in freight transport, permitting
globalization.[21] International air travel became much more accessible in the
1960s, with the commercialization of the jet engine. Along with the growth in
automobiles and motorways, this introduced a decline for rail and water
transport. After the introduction of the Shinkansen in 1964, high-speed rail in
Asia and Europe started taking passengers on long-haul routes from
airlines.
Early in U.S. history, most aqueducts, bridges, canals,
railroads, roads, and tunnels were owned by private joint-stock corporations.
Most such transportation infrastructure came under government control in the
late 19th and early 20th centuries, culminating in the nationalization of
inter-city passenger rail service with the creation of Amtrak. Recently,
however, a movement to privatize roads and other infrastructure has gained some
ground and adherents.
Transportation technology