Overview

• The fully underground line spans 33.5 km with 27 stations from Aarey to Cuffe Parade, making it Mumbai’s first end-to-end subterranean metro corridor.
• Phase II‑B covers 10.99 km from Acharya Atre Chowk to Cuffe Parade with 11 stations and was built at a reported cost of Rs 12,195 crore, improving access to South Mumbai’s administrative and commercial hubs.
• Operations feature 31 air‑conditioned trains with full‑height platform screen doors and service designed for roughly five‑minute headways during peak hours, with fares ranging from Rs 10 to Rs 70.
• Reported timings include Cuffe Parade to Domestic Airport in about 45 minutes, Aarey to Colaba in roughly one hour, Worli to Cuffe Parade in about 15 minutes, and BKC to Worli in under 15 minutes.
• Officials project a 15% easing of suburban rail load, over 6.6 lakh fewer daily road trips, and around 3.5 lakh litres of daily fuel savings, alongside features such as driverless-capable trains and integration with major rail hubs like CSMT, Churchgate and Mumbai Central.