Meenambakkam to Ashok Nagar metro
I'm gonna be travelling alone for the first time so I don't really know how to figure this out. Apparently meenambakkam is on blue line and Ashok Nagar is on green line. Do I have to get down on alandur and change or is there another way? How do I know in which direction the train is gonna go in? If I accidentally get on the wrong train what should I do?