Indian Railways is geographically organized into zones. At present there are 17 Zonal Railways (including Metro Railway, Kolkata) Indian Railways is the 4th largest railway system in the entire world that carries around 8.107 billion passengers and about 1.101 billion tons of freight, annually and almost 3 million tons of cargo, on a daily basis. click for more info: https://www.indianetzone.com/39/indian_railway_zones.htm #indiantransport #GeographyofIndia #indianrailways