Why is the train retrograde?

The train retrograde is caused by historical reasons.

There is a historical reason why the trains in our country drive on the left, because the railways in our country were first built by the British, and the British trains (including carriages and later cars, etc.). We walked on the left, so the railway equipment in our country was built according to the habits of the British, so we left.

The bogie of the train is stuck on the track and runs along the track. When turning, the bogie rotates to keep the train running along the track. The outer rail is higher than the inner rail when turning.

The original trains were drawn by ropes or horses. By the19th century, most trains were pulled by steam locomotives. After 1940s, steam locomotives were gradually replaced by diesel locomotives with cleaner and less labor, followed by electric locomotives and multiple units.

Extended data:

Features:

High safety, large traffic volume, little pollution, little weather influence, low price, but slow speed.

Advantages:

It is more stable than a car, will not bump, has a large passenger capacity, and can be as fast and safer as a high-speed car.

The efficiency of computer headstock divided by unit kilowatt (KW) power and tractable weight metric Tons (ton) is called tractive capacity ratio. The efficiency of steam locomotive is the lowest, followed by diesel locomotive (electric transmission ratio is high), and electric locomotive or electric locomotive is relatively more economical. Because there is no need to consume extra kinetic energy to pull the engine that generates power.

The traction kinetic energy ratio from small to large is: (passenger plane, motorcycle, ordinary family car, truck driving on highway, agricultural tractor, full trailer,) steam locomotive, diesel hydraulic locomotive, diesel electric locomotive, electric locomotive, diesel EMU, high-speed train EMU, electric EMU (passenger ship, fishing boat, tanker).