[21] Concerns were raised that the fare increase would discourage public transport usage and encourage private vehicle dependency, exacerbating Bengaluru’s already severe traffic congestion.

The fare hike coincided with operational challenges on the newly constructed Yellow Line, which faced delays due to the late delivery of rolling stock.

The financial forecast assumes a government subsidy for interest payments and some depreciation, i.e. fare revenue will cover somewhat more than direct operating costs.

After the north–south underground section was opened (simultaneously with the elevated reach 4,4A in the south), the network provided connectivity in all four directions with interchange between the lines and this further increased ridership.

The difficult geological conditions below ground with a mix of soft soil, high groundwater levels, hard granite and large boulders was a major impediment for tunnel boring.

[69] Construction of the 7.5 km elevated section of a new pink line between Kalena Agrahara and Tavarekere (previously Swagat Road Cross) stations, estimated to cost ₹575.52 crore (US$81 million) began post tendering in February 2018.

The line would be along the eastern half of Outer Ring Road and is proposed to have 13 stations – Silk Board, HSR Layout, Agara, Ibbalur, Bellandur, Kadubeesanahalli, Kodibisanahalli, Marathahalli, ISRO, Doddanekundi, DRDO Sports Complex, Sarasvathi Nagara (previously Mahadevapura) and K.R.

There had been a proposal to build a 33 km (21 mi) high speed rail line from MG Road to Kempegowda International Airport (KIA), at a cost of ₹5,767 crore (US$810 million).

[85] This was to be executed by an independent SPV, but later it was decided that BMRC would manage this project and a regular metro line with fewer halts would be built instead of a high speed rail, thus travel time between city to airport would be less.

[89] A 25.9 km (16.1 mi) extension of the Kalena Agrahara (previously Gottigere) – Nagawara line via Kannur and Bagaluru to the airport emerged as the most popular choice.

[96] In January 2023, there was an accident when a reinforcement cage of the under-construction metro pier fell on a woman software engineer, Tejaswini Sulakhe and her son Vihan in HBR Layout,[97][98] which led to their eventual death.

[106][107][108] On 7 March 2020 it was announced that two corridors totaling 44.65 km would be built as fully elevated lines[109] under PPP mode (Kempapura-Jayaprakash Nagara 4th Ph (along ORR-West) and Hosahalli-Kadabagere).

13.7 km (8.5 mi) of the eastern extension was opened for service on 26 March 2023 but remained disconnected from the network as a small section was not yet ready (Baiyyappanhalli-KR Puram).

[125] The Green Line is aligned north to south and connects Madavara in the north-west to Silk Institute in the south-west, covering a distance of 33.46 kilometres (20.79 mi)[48] and has 30 stations.

The Line passes through industrial areas (Peenya, Yeshwanthapur) in the north and also through commercial hubs (Majestic, Chikpete, City Market) and connects large residential catchments in the south (Basavanagudi, Jayanagar, Banashankari, and Thalaghattapura).

The loan marked the multilateral lending agency's foray into the urban transport sector in South Asia, the ADB said in a press release.

[155][158] In May 2017, BMRC received in-principle approval from the European Investment Bank (EIB) to fund construction of the Gottigere-Nagawara line through a ₹3700 crore loan.

Operations to be shifted to Kadugodi and Challaghatta depot The BMRC granted permission to Hydrobloom, a start-up company, to grow hydroponic plants on the pillars of the Namma Metro.

[206] BMRCL began selling tokens through automatic ticket vending machines (ATVMs) on 4 December 2012 at MG Road, Indiranagar and Baiyyappanahalli stations.

[166] Metro system in Bengaluru charges full fare tickets for children above three years of age which is against the Indian government circular date 6 March 2020, No.

[227] Services remained limited throughout the pandemic period and ridership was low due to enforcement of constrained capacity and social distancing norms, as stipulated by the state government.

Namma Metro recorded its highest daily ridership of 9,20,562 passengers on 6 December 2024 due to Diljit Dosanjh's music concert at the Bangalore International Exhibition Centre (BIEC).

Police officials stated that the drill was to assess readiness to deal with situations such as hoax bomb calls, terrorist infiltration, or attacks.

The app 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.

[179][237] BMRCL introduced a WhatsApp chatbot named Bhagya which can provide easy recharge of smart cards, locations of nearby metro stations and information regarding train frequency and fare details.

Later many other Kannada movies, including the 2015 film Rana Vikrama starring Puneeth Rajkumar and Adah Sharma, were shot using Namma Metro's facilities.

[240] The 2012 Malayalam film 22 Female Kottayam, starring Fahadh Faasil and Rima Kallingal, has a song sequence shot in the Namma Metro coach.

[citation needed] In August 2021, the Karnataka government requested large corporations with offices on the Outer Ring Road (ORR) to consider extending remote work policies until the end of 2022 to reduce traffic congestion during the soon-to-be initiated metro rail construction on the stretch from Silk Board to KR Puram.

[242] On 10 January 2023, an under-construction metro pillar rebar on the ORR stretch of the Blue Line fell sideways on a motor vehicle, leading to the death of a woman and her child on a scooter.

On 22 September 2023, Fidias Panayiotou, a Cypriot YouTuber, who initially gained fame for hugging Elon Musk, sneaked onto a train by jumping over the ticketing system.