The emergence of Plastic industries has become a boon for various engineering applications. Plastics are durable, light weight materials, which are easy to transport. The major advantage of plastic is it is recyclable in nature, which helps to conserve landfill space, natural resources and reduce pollution. Earlier in railways, wooden, concrete or steel sleepers are used. Due to their high cost and limited life span, nowadays plastics sleepers are used all over the world at large scale. An attempt has been made to study various engineering plastics used in railways and the advantages of plastics over other construction materials. Moreover, special attention is given to Fiber reinforced plastics (FRP) i.e. plastics composites. The study concluded that plastics composites are more reliable, more economically viable and have longer life span.