Tamil Nadu rural areas. There are 29 national highways in the state, covering a total distance of . The state is also a terminus for the Golden Quadrilateral project, that connects Indian metropolises like (New Delhi, Mumbai, Bengaluru, Chennai and Kolkata). The state has a total road length of , of which are maintained by Highways Department. This is nearly 2.5 times higher than the density of all-India road network. The major road junctions are Chennai, Vellore, Madurai, Trichy, Coimbatore, Salem, Tirunelveli, Tuticorin, Karur, Krishnagiri, Dindigul and Kanniyakumari. Road transport is provided by state owned Tamil Nadu State Transport Corporation and State
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