{{Short description|Proposed loop metro line in Karnataka, India}} {{Use dmy dates|date=December 2024}} {{Use Indian English|date=December 2024}} {{Infobox rail line | color ={{rcr|Namma Metro|Aqua}} | name = Inner Ring line | other_name = {{hlist|Line 9|Yeshwanthapura–Mahalakshmi Line}} | native_name = Oḷauṅgura mārga | native_name_lang = | box_width = | logo = Namma metro.svg | logo_width = | logo_alt = | image = | image_width = | image_alt = | caption = | type = Metro | system = Namma Metro | status = Proposed | locale = Bengaluru, Karnataka, India | start = {{stl|Namma Metro|Yeshwanthpur}} (proposed) | end = | connectinglines = '''''Operational''''' (3) {{rcb|Namma Metro|Yellow|croute}} {{rcb|Namma Metro|Purple|croute}} {{rcb|Namma Metro|Green|croute}} <br>'''''Upcoming''''' (3):<br />{{rcb|Namma Metro|Pink|croute}} {{rcb|Namma Metro|Red|croute}} {{rcb|Namma Metro|Grey|croute}} | stations = 24(proposed) | routes = | daily_ridership = | ridership2 = | linenumber = | website = [https://english.bmrc.co.in/ bmrc.co.in] | yearcommenced = <!--{{Start date|YYYY|MM|DD|df=y}}--> | planopen = {{start date and age|2033|df=y}} '''''(TBC)''''' | open = <!--{{Start date|YYYY|MM|DD|df=y}}--> | yearcompleted = <!--{{Start date|YYYY|MM|DD|df=y}}--> | close = <!--{{Start date|YYYY|MM|DD|df=y}}--> | owner = Bangalore Metro Rail Corporation Limited (BMRCL) | operator = | character = '''''(TBC)''''' | depot = '''''(TBC)''''' | stock = | event1label = | event1 = | event2label = | event2 = | event3label = | event3 = | linelength_km = 34 | linelength = | tracklength_km = | tracklength = | tracks = 2 | gauge = {{RailGauge|sg|allk=on}} | load_gauge = | minradius = | electrification = 750 V DC third rail | speed_km/h = | speed_mph = | speed = | signalling = | elevation_m = | elevation = | racksystem = | routenumber = | map = <!--{{BMR Aqua Line}}--> | map_state = collapsed | map_name = }}

The '''Inner Ring Line''' is a proposed metro rail line for the Namma Metro's network in the city of Bengaluru, Karnataka, India by Indian Institute of Science (IISc), featuring 24 stations and Six to Eight interchanges with other lines. A study by the institute has projected that the loop line would increase the overall ridership of Namma Metro by 77 percent.<ref name=":0">{{Cite web |title=Bengaluru traffic: IISc bats for Inner Ring underground Metro over DKS' tunnel road plan |url=https://www.moneycontrol.com/news/business/bengaluru-traffic-iisc-bats-for-inner-ring-underground-metro-over-dks-tunnel-road-plan-11612841.html |archive-url=https://web.archive.org/web/20241209173933/https://www.moneycontrol.com/news/business/bengaluru-traffic-iisc-bats-for-inner-ring-underground-metro-over-dks-tunnel-road-plan-11612841.html |archive-date=9 December 2024 |access-date=2024-12-15 |website=Moneycontrol |language=en-US |url-status=live }}</ref> The report also concluded that the emissions of carbon dioxide and particulate matter would reduce by 14.8 percent and 18.6 percent respectively, by 2031.

IISc has recommended the loop line as a better alternative for Government of Karnataka's proposal of city wide tunnel roads.<ref>{{Cite web |title=Bengaluru traffic: IISc bats for Inner Ring underground Metro over DKS' tunnel road plan |url=https://www.moneycontrol.com/news/business/bengaluru-traffic-iisc-bats-for-inner-ring-underground-metro-over-dks-tunnel-road-plan-11612841.html |archive-url=https://web.archive.org/web/20241209173933/https://www.moneycontrol.com/news/business/bengaluru-traffic-iisc-bats-for-inner-ring-underground-metro-over-dks-tunnel-road-plan-11612841.html |archive-date=9 December 2024 |access-date=2024-12-15 |website=Moneycontrol |language=en-US |url-status=live }}</ref> The institute stated that the tunnel roads would lead to an increase in the number of vehicles on the road, as opposed to the line, which would lead to a decrease almost twice the calculated increase with the tunnel roads.<ref name=":0" />

As of February 2026, further deliberation on the proposal has been put on hold, as the state government has instead prioritised feasibility studies for Metro extensions to Bengaluru's satellite towns such as Tumakuru, Devanahalli, Attibele, Hoskote, and Jigani.<ref>{{Cite web |last=Reddy |first=Dhanya |title=Bengaluru’s Inner Ring Metro project shelved as focus shifts to outer corridors |url=https://newsfirstprime.com/bengaluru/bengalurus-inner-ring-metro-project-shelved-as-focus-shifts-to-outer-corridors-10624453 |access-date=2026-02-14 |website=newsfirstprime.com |language=en}}</ref>

== Funding == The proposal to build Metro along the city's Inner Ring Road was mentioned in the government's Comprehensive Mobility Plan (CMP) 2031. It is unclear if the 34-km underground line, which is expected to cost about ₹ 10,000 crore, will be a part of Namma Metro’s upcoming Phase III or phase VI expansions. The Bangalore Metro Rail Corporation Ltd (BMRCL) is yet to finalise the new lines including the Inner Ring Line.<ref>{{Cite web|first=Naveen |last=Menezes |title=On the horizon? A 34-km Metro line on Inner Ring Road |url=https://bangaloremirror.indiatimes.com/bangalore/others/on-the-horizon-a-34-km-metro-line-on-inner-ring-road/articleshow/74260938.cms |access-date=2024-12-15 |website=Bangalore Mirror |language=en}}</ref>

== Stations == {|class="wikitable" style="text-align: center;" width="65%" |- ! colspan="5" align="center" | Inner Ring Line |- ! rowspan="2"|# ! colspan="2"|Station name ! rowspan="2"|Connections ! rowspan="2"|Station layout<br>''<small>(TBC)</small>''<ref>{{Cite web |last1=Vivan |first1=Sridhar |date=Oct 15, 2024 |title=Green signal for Namma Metro phase 3A project |url=https://bangaloremirror.indiatimes.com/bangalore/others/urban-development-ministry-approves-metro-3a/articleshow/114224889.cms |access-date=2024-10-15 |website=Bangalore Mirror |language=en}}</ref> |- ! English||Kannada |- |1 |Yeshwanthpura TTMC |ಯಶವಂತಪುರ ಟಿಟಿಎಂಸಿ |{{rcb|Namma Metro|Green|croute}}{{rint|bus}}Yeshwanthpura |Underground |- |2 |Indian Institute Of Science |'''ಭಾರತೀಯ ವಿಜ್ಞಾನ ಸಂಸ್ಥೆ''' | |Underground |- |3 |Mekhri Circle |'''ಮೇಖ್ರಿ ವೃತ್ತ''' |{{rcb|Namma Metro|Red|croute}} |Underground |- |4 |Jaya Chamarajendra Nagara |'''ಜಯ ಚಾಮರಾಜೇಂದ್ರ ನಗರ''' | |Underground |- |5 |Jayamahal |'''ಜಯಮಹಾಲ್''' | |Underground |- |6 ||Cantonment Railway Station |ದಂಡು ರೈಲ್ವೇ ನಿಲ್ದಾಣ |{{rcb|Namma Metro|Pink|croute}} |Underground |- |7 |Halasuru lake |'''ಹಲಸೂರು ಕೆರೆ''' | |Underground |- |8 |Trinity |ಟ್ರಿನಿಟಿ |{{rcb|Namma Metro|Purple|croute}} |Underground |- |9 |Airforce Command Hospital |'''ಕಮಾಂಡ್ ಆಸ್ಪತ್ರೆ''' | |Underground |- |10 |Domaluru |'''ದೊಮ್ಮಲೂರು''' | |Underground |- |11 |Embassy Golf Link |'''ಎಮ್ಬಿಸಿ ಗರ್ಲ್ಸ್ ಲಿಂಕ್''' | |Underground |- |12 |Srinivagilu |'''ಶ್ರೀನಿವಾಗಿಲು''' | |Underground |- |13 |St John's Hospital |'''ಸೇಂಟ್ ಜಾನ್ಸ್ ಆಸ್ಪತ್ರೆ''' | |Underground |- |14 |Sudduguntepalya |'''ಸುದ್ದುಗುಂಟೆಪಾಳ್ಯ''' | |Underground |- |15 ||{{stl|Namma Metro|Dairy Circle}} |ಡೈರಿ ಸರ್ಕಲ್ |{{rcb|Namma Metro|Pink|croute}}<br>{{rcb|Namma Metro|Red|croute}} |Underground |- |16 |Wilson Garden |'''ವಿಲ್ಸನ್ ಗಾರ್ಡನ್''' | |Underground |- |17 ||Lalbagh|| ಲಾಲ್ಬಾಗ್ |{{rcb|Namma Metro|Green|croute}} |Underground |- |18 |Basavanagudi |'''ಬಸವನಗುಡಿ''' | |Underground |- |19 |Gavipura |'''ಗವಿಪುರ''' | |Underground |- |20 |Azad Nagara <br>(sirsi circle) |'''ಅಜಾದ್ ನಗರ <br>(ಸಿರ್ಸಿ ವೃತ)''' | |Underground |- |21 |'''Hosahalli <br>(Toll Gate)''' |'''ಹೊಸಹಳ್ಳಿ <br>(ಟೋಲ್ ಗೇಟ್)''' |{{rcb|Namma Metro|Purple|croute}}<br>{{rcb|Namma Metro|Grey|croute}} |Underground |- |22 |Dhobi ghat |'''ದೋಭಿ ಘಾಟ್''' | |Underground |- |23 |Mahalakshmi|| |ಮಹಾಲಕ್ಷ್ಮಿ ||{{rcb|Namma Metro|Green|croute}} |Underground |}

== See also == * Namma Metro ** Purple Line ** Green Line ** Yellow Line ** Pink Line ** Blue Line ** Orange Line ** Red Line ** Grey Line ** List of Namma Metro Stations * Rapid transit in India * List of metro systems

==References== {{Reflist}} {{Namma Metro|all=yes}}

Category:Namma Metro lines Category:Proposed railway lines in India