The driving force for a train is provided by a separate locomotive or individual motors in a self-propelled multiple unit. The term "engine" is often used as an alternative to locomotives. Although historically dominated by steam propulsion, the most common types of locomotives are diesel and electric, the latter being supplied by overhead wires or spare rails.Trains can also be run by horses, pulled by engines or water-powered cable or wire beaks, run downhill using gravity, or driven by pneumatic, gas turbines or electric batteries.The track usually consists of two running rails with a fixed spacing, which can be supplemented by additional rails such as an electric conducting rail ("third rail") and a rack rail. Monorail and maglev guidewells are also sometimes used.
A yellow and white stripe is formed at the end of the box, which makes the box look different from each other. Yellow color general compartment Shows. The green lined box is only for women. The red and blue stripes on the boxes are meant for pregnant women or people with disabilities.
Trevithick built a full-size steam road locomotive in West Cornwall that he named 'Puffing Devil', and is widely recognized as the first demonstration of steam-powered transport. It successfully transported eight passengers to the next village at a speed of 8 km / h (5 mph). But when more tests were done, Trevithick's locomotive broke down three days later after passing over a drain on the road.The 'Puffing Devil' could not maintain sufficient steam pressure for a long time, and would be of little practical use.In 1803 the inventor designed and built another steam-powered road vehicle called the London Steam Carriage. It became the world's first self-propelled passenger-driven vehicle and attracted many people and gained attention when it drove from Holborn to Paddington and back in London that year.However, it was inconvenient for passengers and proved more expensive than a horse drawn carriage; The idea was later abandoded.

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