South Delhi’s Tughlakabad metro station will become an interchange hub, which will facilitate movement between the Kashmere Gate-Raja Nahar Singh and Tughlakabad-Aerocity corridors, the Delhi Metro Rail Corporation said on Monday. The existing station is being elevated, and plans are afoot to build a new station underground, with a 45-metre-long subway connecting the two stations, the DMRC said. The Tughlakabad …