Indian rail lines utilizes four gauges, the 1,676 mm (5 ft. 6 in) wide gauge which is more extensive than the 1,435 mm (4 ft. 8 1⁄2 in) standard gauge; the 1,000 mm (3 ft. 3 3⁄8 in) meter gauge; and two tight gauges, 762 mm (2 ft. 6 in) and 610 mm (2 ft.). Track segments are appraised for rates extending from 75 to 160 km/h (47 to 99 mph).
The aggregate length of track utilized by Indian Railways is around 115,000 km (71,000 mi) while the aggregate course length of the system is 65,000 km (40,000 mi). About 24,891 km (15,467 mi) or 38% of the course kilometer was energized, starting 31 March 2014.
In a few districts with less activity, the meter gauge (1,000 mm (3 ft. 3 3⁄8 in)) is basic, despite the fact that the Uni gauge task is in advancement to change over all tracks to expansive gauge. The meter gauge has around 8,000 km (5,000 mi) of track length (7% of whole track length of the considerable number of gauges) and 7,000 km (4,300 mi) of course kilometer (10% of whole course kilometer of the considerable number of gauges).
The Narrow gauges are available on a couple courses, lying in bumpy landscapes and in some past private rail lines (on expense contemplations), which are normally hard to change over to wide gauge. Thin gauges have 2,000 course kilometer. The Kalka-Shimla Railway, the Kangra Valley Railway and the Darjeeling Himalayan Railway are three eminent slope lines that utilization restricted gauge, however the Nilgiri Mountain Railway is a meter gauge track. These four rail lines won’t be changed over under the Uni gauge venture.
The offer of wide gauge in the aggregate course kilometer has been consistently rising, expanding from 47% (25,258 course km) in 1951 to 86% in 2012 while the offer of meter gauge has declined from 45% (24,185 course km) to 10% in the same period and the offer of tight gauges has diminished from 8% to 3%. Around 24,891 course km of Indian railroads is charged.
Sleepers (ties) are comprised of pre stressed cement, or steel or cast iron posts, however teak sleepers are still being used on a couple of more established lines. The pre stressed solid sleeper is in wide utilize today. Metal sleepers were widely utilized before the coming of solid sleepers. Indian Railways partitions the nation into four zones on the premise of the scope of track temperature. The best temperature varieties happen in Rajasthan.
Indian Railways has an undeniable association known as Research Designs and Standards Organization (RDSO), situated at Lucknow for all examination, outlines and institutionalization errands. Also, they take care of online ticket booking and PNR assignment (along with providing customer’s the ability to check PNR status). In August 2013, Indian Railways went into an organization with Indian Institute of Technology (Madras) to create innovation to tap sun based vitality for lighting and aerating and cooling in the coaches. This would fundamentally lessen the fossil fuel reliance for Indian Railways.