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
Tamil Nadu state has 17,000 hectares of land under oil palm cultivation, the second highest in India. Dr M.S. Swaminathan, known as the "father of the Indian Green Revolution" was from Tamil Nadu. Tamil Nadu Agricultural University with its seven colleges and thirty two research stations spread over the entire state contributes to evolving new crop varieties and technologies and disseminating through various extension agencies. Among states in India, Tamil Nadu is one of the leaders in livestock, poultry and fisheries production. Tamil Nadu had the second largest number of poultry amongst all the states and accounted for 17.7 per cent of