Tamil Nadu Diesel Loco shed. MRTS which covers from Chennai Beach to Velachery, and metro rail also running between Alandur and koyambedu station. Tamil Nadu has four international airports namely Chennai International Airport, Coimbatore International Airport, Tiruchirapalli International Airport and Madurai International Airport. Salem Airport and Tuticorin Airport are domestic airports. Chennai International Airport is a major international airport and aviation hub in South Asia. Besides civilian airports, the state has four air bases of the Indian Air Force namely Thanjavur AFS, Tambram AFS, Coimbatore AFS and two naval air stations INS Rajali and INS Parundu of Indian Navy. Tamil Nadu has
History of Tamil Nadu in the Indian Union, Tamil Nadu was the seventh largest economy in 2005 among the states of India. The growing demands for skilled labour has caused increased number of educational institutions in Tamil Nadu. The widespread application of caste based affirmative action caused the state to have 69% of all educational and employment vacancies to be reserved to the backward castes. Such caste-based reservations have huge public support in Tamil Nadu, with no popular protests organised against its implementation. The politics of Tamil Nadu have gone through three distinct phases since independence. The domination of the Congress Party after 1947