Pink Line safety clearance: Chief Minister DK Shivakumar said PM Narendra Modi would likely inaugurate the new metro corridor next month. Bengaluru: Fifteen years after Bengaluru's first metro line opened, the network is set to cross 100 km, as the elevated Pink Line received crucial safety clearance on Wednesday..It is, however, not clear when the 7.5-km Kalena Agrahara-Tavarekere metro corridor will actually start public operations..