Economy of Tamil Nadu Main rail junctions in the state include Chennai, Coimbatore, Erode, Madurai, Salem, Tiruchirapalli and Tirunelveli . Chennai has a well-established Suburban Railway network, a Mass Rapid Transport System and is currently developing a Metro system, with its first underground stretch operational since May 2017. Tamil Nadu has a major international airport, Chennai International Airport, that is connected with 19 countries with more than 400 direct flights every day. Other international airports in Tamil Nadu include Coimbatore International Airport, Madurai International Airport and Tiruchirapalli International Airport. Chennai International Airport is currently the third largest airport in India after Mumbai and Delhi
Emblem of Tamil Nadu Emblem of Tamil Nadu The Emblem of Tamil Nadu is the official state emblem of Tamil Nadu and is used as the official state symbol of the Government of Tamil Nadu. It consists of the Lion Capital of Ashoka without the bell lotus foundation and flanked on either side by an Indian flag. Behind the capital, is the image of a "gopuram" or temple tower based on the Tower of sri andal temple located at srivilliputtur, Virudhunagar district. The state emblem was designed in 1949 by artist R. Krishna Rao who was a native of Madurai. Krishna Rao was honoured