also known as the permanent way, is the structure consisting of two 
parallel rails having specified distance in between themand fastened to 
sleepers which are embedded in the layer of ballast, 
whichisRAILWAY TRACK and fastened to sleepers which are 
embedded in the layer of ballast, which is spread over formation. It 
enables trains to move by providing a dependablesurface for their 
wheels to roll upon.