New Delhi: The Railway Budget 2015-16, that left passenger and freight fares untouched, envisages an investment of Rs.850,000 crore over the next five years -- mostly directed towards modernizing existing tracks and introducing faster trains.

Railway Minister Suresh Prabhu Thursday told the Lok Sabha that the proportion of rail revenue available for investments would rise to 11.5 percent in the next fiscal -- up from 8.2 percent in the current fiscal.