The Golden quadrilaterals of the Indian Railways consisting of routes connecting the four metros and the diagonals carry over 55% of freight traffic. These routes are already oversaturated. Capacity constraints on these routes have had a major contribution to the loss of market share of railways. There is an urgent need for augmentation of capacity on these routes. Environment considerations also indicate an increase in market share of railways. The Dedicated Freight Corridor (DFC) project is the single largest project for augmenting rail infrastructure capacity in India.