Tamil Nadu State Transport Corporation transport corporation in India also biggest corporation in the world after bifurcation of APSRTC. TNSTC operates buses of various classes to cater to different sections of public: TNSTC and SETC use custom made buses built on Ashok Leyland and TATA supplied chassis. Air conditioned buses for intra city routes in Chennai are supplied by Volvo. All divisions have individual own coach building units. In 1984, Tamil Nadu State Transport Corporation Limited established Institute of Road and Transport Technology at Chithode, Erode and IRT Perundurai Medical College at Perundurai near Erode. In 2013, Tamil Nadu State Transport Corporation Limited established Amma
Economy of Tamil Nadu of the Government of Tamil Nadu with figures in millions of Indian Rupees. See also and . Non-tax revenues of local bodies are excluded. Amount in millions Economy of Tamil Nadu Tamil Nadu has the second-largest economy in India. Over 50% of the state is urbanized, accounting for 9.6% of the urban population in the country, while only comprising 6% of India's total population. Services contributes to 45% of the economic activity in the state, followed by manufacturing at 34% and agriculture at 21%. Government is the major investor in the state, with 52% of total investments, followed by private