Mumbai, Dec. 27 -- Six years after Mumbai got its first Metro, a 11.5-km Versova-Andheri corridor, Mumbaiites can expect two more Metro lines to be operational in 2020. The Mumbai Metropolitan Region Development Authority (MMRDA), which has currently undertaken construction of six Metro lines, hopes to carry out trial runs for two corridors - Metro-2A (Dahisar-DN Nagar) and Metro-7 (Dahisar E-Andheri E) - in September 2020. Excerpts from an exclusive chat with metropolitan commissioner RA Rajeev:...