The evolution of transportation in modern times 100 years .

The main stages of development experienced by world transport are as follows: the stage of water transport (from primitive societies.

by the 20s of the 19th century); the Qing railway transport stage (from the 30s of the 19th century to the 30s of the 20th century); road, air and pipeline transport phases (from the 30s to the 50s of the 20th century); Integrated transport stage (since the 50s of the 20th century).

The development trend of the transportation industry in the modern world is: to improve transportation efficiency, transportation tends to be high-speed, large-scale, and specialized; Modernization of transportation management technology.

High-speed is to improve the running speed of the means of transport, shorten the time of transportation and burial, and increase the passing capacity, which is an important goal pursued by modern transportation, highways, high-speed railways and supersonic aircraft.

The development of this trend is a manifestation of this trend. Large-scale is to expand the loading capacity of means of transport, which is most obvious in the case of ships.

World transport should not only solve the problem of coordinated development between itself and the economy and society, as well as various modes of transport at the domestic level, but also solve the problem of coordinated development between countries at the international level. In today's globalization.

Under the general trend of development, the problem of uncoordinated and unbalanced international transportation is very prominent.

Transportation is the basic need and prerequisite for economic development, the foundation of survival and civilization of modern society, the infrastructure and important link of social economy, the pioneer of modern industry and the national economy.

It is an important tool for resource allocation and macroeconomic regulation and control, an important factor in the formation of land development, urban and economic layout, and an important factor in promoting social division of labor, large-scale industrial development and economies of scale.

It plays an important role in consolidating the country's political unity, strengthening national defense construction, and expanding international economic and trade cooperation and personnel exchanges. In conclusion, transportation has important economic, social, political and defense significance.

Transportation is an engineering field that studies the layout and construction of railway, highway, waterway and air transport infrastructure, the maluse of transport depots, traffic information engineering and control, and transportation operation and management.

Transportation allows transportation activities to be carried out. The earliest means of transport can be said to be wooden sticks : a heavy object was tied to one end of the rod and carried by a single person; Or place a heavy object in the middle and be carried by two people.

Another means of transportation invented in the early days of mankind was the sled, from which the car was made. In ancient times, people also invented canoes in order to cross waters.

In ancient times, according to actual needs, the people constantly invented and improved the existing means of transportation. There are more and more types of vehicles and ships, they are moving faster and faster, and the loads are getting heavier and heavier. On the other hand, humans have long been carrying goods from domestic cattle, horses, and other livestock.

After the advent of carts, domestic animals such as cattle and horses were used to pull carts. Because horses are fast, they can be ridden by people.

China is a vast country, and the natural conditions are different in different places, and the means of transportation used by people in different regions are also very different. Camels, the ships of the desert, are a common means of transport in the Northwest. In the south of the Yangtze River, boats are the main means of transportation.

In the southwest, a bamboo means of transportation that is ancient, and people carry poles, the sliding pole, is still widely used. After the Song Dynasty, comfortable sedan chairs became more and more common.

Human exploration is endless, and the phrase "riding a kite in the blue sky" reflects the Chinese's yearning for flying into the blue sky.

First? Just look for horses, carriages, ox carts, sedan chairs, cars, trains, ships, airplanes, and the like.