Yellow Line (Namma Metro)

In the late 2000s and early 2010s, traffic began to grow in the Outer Ring Road in Bangalore and there was a lack of connection from the northern suburbs of Bangalore to the southeastern industrial zones. In 2009, BMRCL planned to build a line in the southern end of the city to connect it to the industrial areas of Bommasandra and Electronic City. In 2012, BMRCL submitted the Phase 2 of Namma Metro which included a metro expansion of the existing metro lines and the construction of two new lines from Bannerghatta Road to Nagawara and from RV Road to Bommasandra. The lines were later named the Yellow Line and Pink Line, and BMRCL explored the option of developing them as a public-private partnership project, but these plans were later abandoned. The project received approval from the Central Government in January 2014. ==Funding==

For Phase 2 of the Namma Metro, the Central and State Governments will fund around ₹15,000 crore. The State and Central Governments will bear 30% and 20% of the project cost respectively. The remaining will be obtained through senior term loans. BMRCL is permitted to raise up to ₹9,000 crore through loans. Indian firms Biocon and Infosys announced that they would fund construction of the Biocon Hebbagodi and Infosys Foundation Konappana Agrahara metro stations respectively on the Yellow Line. Each firm contributed towards the project. Biocon CMD Kiran Mazumdar Shaw stated that the company wanted to fund the project because it would help de-congest the city. Both Biocon and Infosys have offices and facilities located near the stations. ==Planning ==

On June 14, 2016, PM Narendra Modi laid the foundation for the line, with BMRCL releasing the first tender for the line from Bommasandra to Hosa Road on 9 December 2016. BMRCL floated civil work tenders in three packages. The work involves the construction of a viaduct with five stations, and includes the construction of the depot entry line leading to Hebbagodi Depot. Tenders for the stretch from Hosa Road to Bommanahalli (previously HSR Layout) were floated the next day. Both packages were awarded to Thai-based ITD Cementation India in May 2017 for ₹511.35 and 485.52 crores (US$140 mil in total). Civil works began in November 2017. The third tender for construction of the elevated section and five stations was awarded to a joint venture between Hindustan Construction Company (HCC) and URC Construction Pvt Ltd. on 3 July 2017 for . BMRCL began the land acquisition process in early 2017 and civil works started in November 2017. BMRCL awarded the construction of the Hebbagodi Depot to Parnika Commercial & Estates in July 2019 while simultaneously preparing the tender for rolling stock. BMRCL received bids from CRRC, Bombardier, Alstom India, and BEML. CRRC's total bid cost was ₹100 crores less than BMRCL estimates and over ₹175 crores cheaper than the next lowest bid. The firm placed a bid of ₹7.31 crores per coach, compared to BEML ₹9.28 crores per coach. However, later with escalating tensions between India and China, BEML offered a to re-negotiate a new price with BMRCL if the firm was willing to as India was considering minimizing its business ties with China, which never materialized. Bidding } ==Infrastructure==

Rolling stock BMRC operates driverless trains on the Yellow Line with a communications-based train control (CBTC) signaling system. On 2 December 2019, BMRC awarded a contract for supplying 90 coaches (15 rakes) to CRRC Nanjing Puzhen Co. Ltd with CBTC signaling for the Yellow Line. CRRC entered into a partnership with Titagarh Rail Systems Limited (TRSL) to meet the requirement of at least 75% of the coaches to be made in India. As a result, only one prototype train set was manufactured in China. The prototype arrived at the Hebbagodi depot on February 14, 2024. The trainset underwent rigorous and static testing within the depot, inclusive of the tracks present at the depot. The second trainset, the first one assembled in India, arrived at the depot on February 9, 2025. Delays The line was initially scheduled to open in December 2022. However, due to construction delays, the opening was pushed to June 2023, then to April 2024. The civil work for the line finished in March 2024 and BMRCL planned for the line to be opened in July 2024, but the opening was pushed again to December 2024 due to delays in the delivery of rolling stock. Later, TRSL reported that the first train set delivery had been pushed to late 2024, causing a December opening to be unlikely. Later, it was reported that BMRCL may begin operating a "Plan B" which would involve the opening of the line in December with only seven stations opening with a 30-minute frequency, to be reduced later with the opening of the remaining nine stations. BMRCL continued to move the opening of the line until August 2025. BMRCL then announced that it would decide on the opening of the Yellow Line after receiving the CMRS decision. Two options were reportedly under consideration — opening all stations with a lower frequency of trains or starting operations at a fewer number of stations with a slightly higher frequency. Following the CMRS approval in early August 2025, BMRCL chose to open all stations along the corridor, operating trains at a frequency of 25 minutes. Operations on the line have started as of 11 August 2025. ==Stations==

, showing the start of the Raggigudda-Silk Board Flyover There are currently 16 stations on the Yellow Line. All stations are fully elevated, while four stations (Ragigudda, Jayadeva Hospital, BTM Layout, and Central Silk Board) are built along with the new Ragigudda-Silk Board flyover as a rail and road flyover. The depot for the line is located near the Hebbagodi station. In 2018, the Infosys Foundation and BMRCL signed an Memorandum of Understanding for the construction and maintenance of the Konappana Agrahara metro station. Infosys Foundation will provide for the construction of the station, while 3000 square feet of the station land was allocated for use by Infosys and a direct construction of a foot over bridge from the metro to the Infosys campus was approved. In 2019 the government approved renaming the station to "Infosys Foundation Konappana Agrahara" for a period of 30 years. Similarly, in December 2024, BMRCL and Delta Electronics signed an agreement to provide for the construction of the Bommasandra station. As per the agreement the Bommasandra station was renamed to "Delta Electronics Bommasandra" for a period of 30 years. Interchanges Passenger interchange facilities, connecting to other metro and railway lines, will be provided at the following stations: • Rashtreeya Vidyalaya Road (connects to the Green Line, which runs between Madavara and Silk Institute) • (connects to the Pink Line, which runs between Nagawara and Kalena Agrahara) • (connects to the Blue Line, which runs between Central Silk Board and KIAL Terminals) == See also ==