The Central Secretariat Metro station is set to become a triple-line interchange hub under the ongoing expansion of the city’s metro system. Right now, Central Secretariat serves as a key stop on two busy corridors - the Yellow Line and the Violet Line. Importance of Central Secretariat Triple InterchangeSo, the Magenta Line is finally hitting Central Secretariat. Violet Line Magenta Line Smoother travel to the south-west and east parts of the city via one hub. In short, the Central Secretariat Metro station is changing its role in Delhi’s transit scene.