Transportation technologies

Transportation technologies refer to vehicles or other innovations that help people, animals, or goods move from one place to another. Ancient inventions such as boats, wheels, and paved roads helped to increase the ease and efficiency of travel. In medieval times, updates to sailing technology helped explorers navigate the oceans. In modern times, transportation technologies have advanced and diversified greatly. Trains, aircraft, and mass-produced automobiles have become common. Starting in the 1950s, humanity began designing vehicles to transport people and machines into space.

Overview: Ancient Transportation

In the most ancient times, people had no true transportation technology. They had to rely solely on the strength of their bodies to move themselves from place to place. At most, some people trained animals such as camels to carry them. The lack of transportation technology made long-distance travel strenuous, time-consuming, and potentially hazardous. Eventually, people began searching for new ways to move more quickly and easily.

One of the first major strides in transportation technology was the boat. Some of the first boats in the world were simple rafts created by tying together buoyant reeds or logs until they could support the weight of a person. Another ancient innovation in boating was the dugout canoe, a long, narrow watercraft hand-built from a hollowed-out log. Rafts and canoes were dependent on human rowers or the power of rushing water. Around 3000 B.C.E., boaters in Egypt discovered a new source of energy. By tying wind-catching sheets to their rafts, they let the movement of the air propel their craft, thus creating the first sailboats.

Transportation over land remained difficult until around 3500 B.C.E., when a Mesopotamian artisan created the first known wheel. Before this invention, people had to carry heavy objects or pull them on crude flat sleds. The wheel greatly reduced the amount of energy required to move goods. About five hundred years later, Mesopotamians began attaching wheels to horse-drawn chariots, allowing people to travel with relative ease and speed.

The rise of chariots and other wheeled vehicles led to a need for improved roadways. The first roads were simple paths between towns and cities. Later, some engineers began lining roads with cobblestones or covering them with hard paving material such as asphalt. Paved and rock-lined roads helped people migrate, trade, and spread their cultures more easily. The Roman Empire became particularly noted for its extensive system of roads, which enabled Roman soldiers to move quickly to secure imperial domination over many lands.

Medieval and Industrial Eras

In the medieval era, inventors improved upon ancient forms of transportation technology. Sea travel saw the greatest advancements during this period. Inventions such as the compass and the steering rudder allowed accurate navigation over long distances and better maneuvering. Likewise, improvements in shipbuilding led to larger, stronger sailing ships whose designs maximized the energy of the wind. By the 1400s, these innovations allowed seafarers to travel farther than ever into the oceans, leading to an age of worldwide exploration.

By the 1600s, progress with sea transportation was matched by innovations in land travel. Throughout much of the world, engineers created more and better roadways, allowing people to trade more widely and migrate to previously uninhabited places. At the same time, horse-drawn vehicles improved as well. Stagecoaches became a popular form of travel as well as an important means of delivering mail and other goods between communities.

The next great advances in transportation technology occurred during the Industrial Revolution. The rise of factories during this time meant that transportation devices could be produced more easily and inexpensively than ever before. It also meant that factories needed to send and receive huge amounts of material. In some countries of Europe, as well as the United States, engineers designed canals to bring coal, lumber, ore, and other needed industrial materials to factories. Meanwhile, newly invented steamships became the standard for long-distance sea transportation.

Likely the greatest transportation technology of the period, however, was the railroad. By the middle of the 1800s, many nations had developed railroad systems, some involving extensive networks of thousands of miles of track. Trains offered immense hauling power, relatively high speeds, and regular schedules of delivery.

Modern Transportation

The twentieth century saw an enormous rise in transportation technology. In the early 1900s, the automobile became common in many countries. These vehicles promised a handy means of traveling and delivering goods across potentially vast distances. Advances in mass-production techniques made automobiles with internal-combustion engines affordable to the masses, and by midcentury, cars, trucks, and motorcycles were a staple of life in many countries. Automobiles changed not only transportation but many facets of society. For instance, ease of travel allowed people to live some distance away from their workplaces, which contributed to the rise of suburbs. In addition, increasing reliance on motor vehicles led to the construction of millions of miles of new roadways.

After the first successful airplane flight in 1903, aircraft became an entirely new means of transportation. Throughout the 1900s, inventors designed and refined a vast array of aircraft for private, commercial, and military uses. The first airplanes were made of wood and fabric, but by the middle of the century, they had evolved into highly sophisticated metal machines, capable of amazing feats of speed. Planes grew larger and stronger in the coming generations until passenger jets were capable of carrying hundreds of passengers at hundreds of miles per hour. For the first time, people could travel around the world in a matter of hours, rather than months or years.

Submarines were invented in the early twentieth century and played a critical role in the world wars. They and other naval vessels benefited from the postwar development of nuclear power generation, which supplanted conventional fuels, as it enabled these vessels to remain at sea for far longer periods of time.

By the middle of the twentieth century, transportation technology had advanced so far that scientists began designing rockets that could travel into space. At first, scientists launched satellites and unmanned craft into orbit. After years of testing, humans began rocketing into space as well. In 1969, an American spacecraft landed on the moon for the first time, marking a major milestone in the history of transportation.

In the late twentieth century, improvements to existing transportation technology resulted in ever faster transportation. The Concorde supersonic jet, which operated from 1976 through 2003, was the world's fastest commercial aircraft, flying at 1,350 miles per hour. During that same period, high-speed bullet and magnetic-levitation (maglev) trains, capable of reaching several hundred miles per hour, were built in Japan and several Western European countries.

Twenty-First-Century Transportation

Concerns about the environmental effects of carbon dioxide emissions spurred the research, development, and commercialization of alternatives to internal-combustion engine vehicles. Notably, the electric-powered car, first created in the early years of automotive technology, was reimagined and popularized while hybrid-electric vehicles and hydrogen fuel cells were also developed.

Advances in computing technology paved the way for semiautonomous and autonomous vehicles capable of driving themselves. By the late 2010s, semiautonomous vehicles were already in operation while fully autonomous passenger cars remained in testing.

Another innovative transportation concept emerged in 2013, with technology entrepreneur Elon Musk's proposal for a hyperloop. His original hyperloop vision was for small pods to be magnetically elevated and pulled through underground partial-vacuum tubes, with supplemental solar power to help it achieve and sustain speeds up to 760 miles per hour. By 2018, several companies were testing larger, slower versions of the hyperloop on elevated tracks.

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