Being a planned city, New Delhi has numerous arterial roads, some of which have an iconic status associated with them such as Rajpath, Janpath and Akbar Road. In 2005, private vehicles accounted for 30% of total transportation demand for the Delhi metropolitan area. Road construction and maintenance is primarily the responsibility of NDMC's Civil Engineering Department. Underground subways are a common feature across New Delhi. As of 2008, 15 subways were operational. In 1971, the administrative responsibility of the Delhi Transport Corporation (DTC) was transferred from Municipal Corporation of Delhi to Government of India following which DTC extended its operations to New Delhi. In 2007, there were 2700 bus stops in New Delhi, of which 200 were built and maintained by NDMC and the rest by DTC.
The Delhi Metro, constructed and operated by the Delhi Metro Rail Corporation (DMRC), connects the city with the rest of the metropolis of Delhi. Under an agreement with NDMC, DMRC can acquire land for the construction of metro rail and stations in New Delhi without any financial implications.[19] NDMC is also constructing multi-level parking systems in collaboration with DMRC at various Delhi metro stations across New Delhi to increase parking space. The New Delhi Railway Station is the main railway station in Delhi serving many trains to important cities.
New Delhi Station is the second busiest, and one of the largest, in India. It handles over 300 trains each day, from 18 platforms connecting New Delhi with the rest of India.
Indira Gandhi International Airport (DEL) is the primary aviation hub of Delhi. 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 US$1.93 billion Terminal 3 is currently under construction and will handle an additional 34 million passengers annually by 2010. Further expansion programs will allow the airport to handle more than 100 million passengers per annum by 2020. Safdarjung Airport is the other airfield in Delhi used for general aviation purpose.