Post-independence in 1947, Willingdon was renamed Safdarjung, after nearby Safdarjung's Tomb, which serves as a backdrop to the airport. It served as Delhi's main airport for over two decades, until a new site was chosen in west Delhi, known as Palam, then on city's outskirts, giving its Palam Airport. Palam Airport, started as RAF Station Palam, during World War II, is now much enlarged and known as Indira Gandhi International Airport, where the passenger operations were shifted in 1962 due to an increase in traffic. It is still used for general aviation purposes and small propeller planes take off and land from the airport. However, planes are cautioned when landing, since the airport is situated right next to a flyover highway. Indira Gandhi International Airport is the airport serving New Delhi; a much larger airport with three runways and over sixty domestic and international carriers serving it.