Bangalore Metro, ardently referred as Namma Metro is a rapid transit system serving the city. It is the first metro rail service of South India and is the fourth longest operational metro network in India after the Delhi Metro, Hyderabad Metro and Chennai Metro. The Bengaluru Metro Rail Corporation Limited (BMRCL) is the developer and operational in-charge of Bangalore Metro and this board is jointly ventured by Government of India and the State Government of Karnataka. The metro network consists of two colour-coded lines namely the Purple-line and Green-line with a total length of 42.3 kilometres. There are 40 stations on the Namma Metro. The system has a mix of underground, street level, and elevated stations using standard-gauge tracks. Services operate daily between 05:00 and 23:00 running with a headway varying between 4–20 minutes. The trains are composed of six Air-conditioned cars (coaches) with fully automatic entry-exit systems. The BMRCL has launched Namma-Metro app that allows users to purchase and recharge smart cards, locate nearby metro stations and also provides information related to parking, train frequency, route map, and fare details.
The Namma Metro Line is outlined to be extended to Anjanapura from Puttenahalli, via Kanakapura Road. The other developments include proposed modification of the Bengaluru-Kanakapura Road to a four-lane expressway and construction of peripheral Ring Road that will be integrated with the NICE Expressway to connect Tumkur Road with the Hosur Road, via Mysore Road and Kanakapura Road.