New coastal Rly line (about 150-160kms) to connect Chennai-Puducherry-Cuddalore shall be very helpful to better connect Chennai to coastal southern distts of TN by providing a shorter alternative. This line should reduce the
Chennai-Cuddalore distance from 205 km to just about 160kms &
Chennai-Puducherry distance from 196km to just 140kms
Chennai-Rameshwaram distance too shall be shortened
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The most important project planned/under construction for TN is doubling+Electrification of MS-MDU-Nagercoil-KanniyaKumari