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speak about transportation for 3 minutes (topic)
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Answer Posted / gagandeep singh
RAIL TRANSPORT.....Rail transport is the conveyance of
passengers and goods by means of wheeled vehicles running
along railways or railroads. Rail transport is part of the
logistics chain, which facilitates international trade and
economic growth. Rail transport is capable of high capacity
and is energy efficient, but lacks flexibility and is
capital intensive.
It consists of trains running along a permanent way,
consisting of steel track on sleepers/ties and ballast.
Alongside is a signalling system and sometimes an
electrification system. The rolling stock, fitted with
metal wheels, moves with low frictional resistance when
compared with road vehicles, and can be coupled into long
trains. The operation is carried out by a railway company,
providing transport between train stations. Power is
provided by a steam engine, diesel engine or electrical
transmission. Rail is the safest land transport when
compared to other forms of transport.[citation needed]
The oldest, man-hauled railways date to the 6th century BC.
With the development of the steam engine, it was possible
to construct mainline railways, that were a key component
of the industrial revolution. In the 1880s, electric trains
were launched, and the first tramways and rapid transit
systems came into use. Following the 1940s, unelectrified
railways in developed countries replaced steam with diesel.
In the 1960s, high-speed rail was launched. Trains have
since become more accessible, and some are now driverless.
Other forms of rail transport outside of the traditional
definition such as maglev trains have also emerged...(((im
gagandeep.....
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