The Main line Villuppuram-Cuddalore- Chidambaram-Mayiladuthurai-Kumbakonam -Thanjavur and the bottom BACK BONE LINE of Dindugal - Karur-Namakkal-Salem-Dharmapuri-Hosur -Bangalore Railway lines are also Doubled with Electrification for the benefit of all the Districts in the Tamilnadu,