tuhin4u (Unstopable Lover + Mariana World DIAMOND member): Broad gauge is the predominant gauge used by Indian Railways. Indian broad gauge—1,676 mm (5 ft 6 in)—is the most widely used gauge in India with 105,000 km (65,000 mi) of track length (91% of entire track length of all the gauges) and 56,000 km (35,000 mi) of route- kilometre (86% of entire route- kilometre of all the gauges). *
27-11-14 - 10:02:27

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): The metre gauge has about 8,000 km (5,000 mi) of track length (7% of entire track length of all the gauges) and 7,000 km (4,300 mi) of route- kilometre (10% of entire route- kilometre of all the gauges). *
27-11-14 - 10:03:36

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): The Narrow gauges are present on a few routes, lying in hilly terrains and in some erstwhile private railways (on cost considerations), which are usually difficult to convert to broad gauge. Narrow gauges have 2,000 route-kilometre. The Kalka-Shimla Railway, the Kangra Valley Railway and the Darjeeling Himalayan Railway are three notable hill lines that use narrow gauge, but the Nilgiri Mountain Railway is a metre gauge track. *
27-11-14 - 10:05:03

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): The share of broad gauge in the total route-kilometre has been steadily rising, increasing from 47% (25,258 route-km) in 1951 to 86% in 2012 whereas the share of metre gauge has declined from 45% (24,185 route-km) to 10% in the same period and the share of narrow gauges has decreased from 8% to 3%. About 21,500 route-km of Indian railways is electrified. *
27-11-14 - 10:06:53

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): Indian Railways have a full- fledged organisation known as Research Designs and Standards Organisation (RDSO), located at Lucknow for all research, designs and standardisation tasks. *
27-11-14 - 10:07:58