. Railways is the principal mode of transportation for freight and passengers in India. . Railways also makes it possible to conduct a number of activities like business, sightseeing, pilgrimage along with transportation of goods over long distances. . Apart from being a means of transport, the Indian railways has been a great integrating force for more than 150 years. . Railways in India binds the economic life of the country by deveioping industry and agriculture through transportation. The Indian railways is the largest public sector undertaking in India.