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
State Industries Promotion Corporation of Tamil Nadu and Manapparai soon. SIPCOT IT Park is the largest Information Technology Park in Asia, located in Padur, Siruseri, along the IT Corridor, Chengalpattu taluk, Kancheepuram District. State Industries Promotion Corporation of Tamil Nadu The State Industries Promotion Corporation of Tamil Nadu Limited (SIPCOT) (), Limited is an institution owned by the Government of Tamil Nadu. The State Industries Promotion Corporation of Tamil Nadu Limited (SIPCOT) was formed in the year 1971, to promote industrial growth in the State and to advance term loans to medium and large industries The Functions of State Industries Promotion Corporation of Tamil Nadu Limited (SIPCOT)