Delhi

Delhi, officially the National Capital Territory of Delhi (NCT), is the capital of India as well as the country's largest and 2nd most populous metropolis. With 16.7 million residents as of the 2011 census, Delhi is also the 8th most populous metropolis in the world. The region has been given special status of National Capital Region (NCR) under the Indian constitution's 69th amendment act of 1991. There are nearly 22.2 million residents in the greater NCR urban area, which includes the neighboring cities of Ghaziabad, Noida, Greater Noida,Baghpat, Gurgaon, Sonepat and Faridabad along with other smaller nearby towns.

Air:

Indira Gandhi International Airport is situated in the western corner of Delhi and serves as the main gateway for the city's domestic and international civilian air traffic. In 2006–07, the airport recorded a traffic of more than 23 million passengers, making it one of the busiest airports in South Asia. A new  96.8 billion (US$1.75 billion) Terminal 3 handles an additional 34 million passengers annually in 2010.

Indira Gandhi International Airport

The Delhi Flying Club was established here in 1928 with two de Havilland Moth aircraft named Delhi and Roshanara was established at Safdarjung Airport which started operations as an airport in 1929, when it was the India's second airport and Delhi’s only airport. The airport functioned until 2001, however in January 2002, due to security considerations in the post scenario, the government closed the airport for flying activities, the club only carries out aircraft maintenance courses today . Today it is mostly used for VVIP helicopter rides to the Indira Gandhi International Airport including the President and the PM.

Rail

The Delhi Metro, a mass rapid transit system built and operated by Delhi Metro Rail Corporation (DMRC), serves many parts of Delhi as well as the satellite city of Gurgaon in the neighbouring Haryana, Noida, and Ghaziabad in neighbouring Uttar Pradesh. As of August 2011, the metro consists of six operational lines with a total length of 189 km (117 mi) and 146 stations while several other lines are under construction. The Phase-I was built at a cost of US$2.3 billion and the Phase-II will cost an additional  216 billion (US$3.91 billion). Phase-II of the network is under construction and will have a total length of 128 km and it was completed by 2010.

The Delhi Metro

Delhi is a major junction in the rail map of India and is the headquarters of the Northern Railway. The five main railway stations are New Delhi railway station, Old Delhi, Nizamuddin Railway Station, Anand Vihar Railway Terminal and Sarai Rohilla. In addition to the Delhi Metro, a suburban railway, the Delhi Suburban Railway exists.

Roads

As of 2007, private vehicles account for 30% of the total demand for transport. At 1922.32 km of road length per 100 km², Delhi has one of the highest road densities in India. Delhi is well connected to other parts of India by five National Highways: NH 1, 2, 8, 10 and 24. Roads in Delhi are maintained by MCD (Municipal Corporation of Delhi), NDMC, Delhi Cantonment Board, Public Works Department (PWD) and Delhi Development Authority.

BusesDelhiDTC

Delhi's high population growth rate, coupled with high economic growth rate has resulted in an ever increasing demand for transport creating excessive pressure on the city's existent transport infrastructure. As of 2008. Also, the number of vehicles in the metropolitan region, i.e., Delhi NCR is 112 lakhs (11.2 million). In 2008, there were 85 cars in Delhi for every 1,000 of its residents. In order to meet the transport demand in Delhi, the State and Union government started the construction of a mass rapid transit system, including the Delhi Metro. In 1998, the Supreme Court of India ordered all public transport vehicles of Delhi to use compressed natural gas (CNG) as fuel instead of diesel and other hydro-carbons.