Serving Delhi and closely adjoining areas like Ghaziabad, Faridabad, Noida, and Gurgaon, including old and new Delhi, Delhi Metro is one the best and convenient metro systems in Delhi which is used for public transportation. It is acknowledged to be world’s 13th largest metro rail systems with respect to length and registered member of Nova Groups of Metros. Post Chennai MRTS and Kolkata Metro, Delhi Metro is considered to be our country’s 3rd urban mass comfortable and rapid public transport system. Infact it can be called as India’s first swift transit system. Till December 2014, this metro system has network of 5 colour coded lines namely Violet, Yellow, Green, Blue and Red along with an impeccable Airport Express Line. Delhi Metro has length of 193 kilometres, serves 140 stations of which there are 38 which are underground, 5 of these are at grade and remaining are elevated. All metro stations have stupendous facilities in terms of elevators, escalators and tactile tiles for guiding any visually impaired during the entrance and exit from the trains. The metro stations have blend of gauge rolling stock, board gauge, underground lines, at-grade lines and elevated lines. There are four kinds of rolling stocks namely CAF beasain standard gauge, Mitsubishi rotem standard gauge, bombardier movie and Mitsubishi rotem board gauge.

Owned by state, Delhi Metro Rail Corporation has been established with equal equity participation and involvement of Indian Government while the Government of National Territory of Delhi has constructed and operates the Delhi Metro. This organization falls under the administration regulation of Ministry of Urban Development which belongs to the Indian Government. Apart from the construction and operational activities of Delhi Metro, Delhi Metro Rail Corporation is also an active participant in making plans while implementing the metro rail, mono rails as well as high speed railway projects of India. It also extends consultancy services to different other metro services of India and abroad.

By November 2014, DMRC has operated nearly 3000 trips regularly between 5:30 am to 12:00 am with an interval of 3-4 minutes amid trains at highest frequency. The metro trains are generally equipped with 4 to 6 coaches however due to increase in passenger number now the metro trains have 8 coaches. These 8 coaches metro is only for yellow line (which runs between Jahangirpuri and HUDA city center) and the blue line (which runs between Dwarka sector 21 and Noida City Center and Vaishali). The yellow line was the first line that had 8 coached metro train. The energy output is provided by 25 kilovolt, fifty hertz supplementary current via overhead catenary. The metro rail has mean daily ridership of nearly 2.4 million passengers and till August 2010 it has already carried approximately 1.25 billion passengers since its commencement. DMRC has been accredited by United Nations as the very first rail and metro rail based system all across the world to have “carbon credit for cutting down the greenhouse gas emission” and assisting in limiting air pollution level in Delhi and adjoining NCR region by 630000 tonnes each year.

The planning for Delhi metro had started in year 1984. During this time the Urban Arts Commission and Delhi Development Authority had come up with their proposal of developing an advanced multi modal transport system which is specially made for the city. Government of Delhi and India jointly came together and formed Delhi Metro Rail Corporation which was registered on third May 1995 under the prominent Companies Act 1956. The construction of Delhi Metro started in year 1998 while the red line, which was its first section was opened in 2002. The yellow line was started in 2004, blue line came in operation in 2005 while the branch line started its functioning in 2009. The violet and green lines came into operation in 2010 while the Delhi Airport Metro Express was opened in 2011.

The Rapid Metro Rail in Gurgaon was recently opened for the public. This rail line is connected with Yellow line and is a distinguished metro system even though the tickets for this rail can be purchased from Delhi Metro and can be used in its any network.