Railways transportation is the means of transfer of passengers and goods using railway systems. It is the safest mode of transit. A railways system is a complex form of engineering. Each system has two major components- the rolling stock or locomotives, and the rail tracks along with their supporting structures and ancillary buildings. Railway signalling is an essential aspect of railway transportation. Railway transportation engineering is responsible for the design, construction and operation of rail transport systems. It encompasses the design and implementation of train control systems, railway systems engineering, control and railway engineering, etc