1001 Smart Cities

Permanent project revision

Namma Metro Yellow Line: A Finished Line Waiting for Its Trains

Revision 2026-08-26-claim-mapping · effective 2026-07-26

Superseded. A later revision exists: 2026-08-27-correction-run →

unreviewed

Added a nine-claim evidence mapping and a sourced lesson; removed an incorrect derived multiple (the delay cost was stated as more than eight times the saving; 1,866 against 410 crore is between four and five) and replaced the line length with a rounding all three sources support; added the June 2026 fleet status.

sha256:302d751c232f435a640f22f8fe691804d75c4368b48f9d6d16be12c7c67414ee
All revisions → Current entity page →

Change set

  • replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.
  • replace /snapshot/claims — Updated claims to the current sourced project record.
  • replace /snapshot/sources — Updated sources to the current sourced project record.
9
of 9 claims mapped
7
source dossiers
7
publication dates recorded
1
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-010e5dcd764a66a9 quantitative
was structurally complete by late 2023 but could not carry anyone until August 2025, because the trains were missing
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The think-tank paper sets out the sequence: the structures were finished well before the rolling stock arrived, and the line opened to the public in August 2025 with three train sets.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
Claim 2 clm-e068fbc97293e7a5 quantitative
The 2019 coach order went to China's CRRC as the lowest bidder
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The paper records the award of the train-set contract to CRRC in 2019 on the ground that it was the lowest bidder.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
Claim 3 clm-1338d5b83b3253c1 quantitative
after the 2020 Galwan clash new procurement rules required bidders from land-border countries to obtain security clearances, CRRC's Indian factory plan stalled and its personnel were denied visas
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The paper traces the chain: the Galwan clash, Rule 144(xi) of the General Financial Rules requiring security clearances for bidders from land-border countries, the halted Sri City factory and the visa refusals.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
Claim 4 clm-23b877badff63d3d quantitative
Siemens supplied CBTC rated GoA 4, the highest grade of automation, but service opened in semi-automatic mode with a driver in the cab
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The supplier release states the grade of automation; the trade report at the opening states that the trains initially run in semi-automatic mode with a driver aboard.
Caveat
The grade of automation is a supplier capability statement, not a statement about how the line runs; Railway Gazette blocks automated fetching and its sentences were confirmed through search passes.

Sources carrying this claim

  1. Siemens Mobility — CBTC and automated train technology for Bengaluru Metro (10 Dec 2020)
  2. Railway Gazette International — Yellow Line inaugurated (Aug 2025)
Claim 5 clm-83d71286ce32ceca quantitative
three trainsets out of fifteen, on a 25-minute headway
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The paper counts three of fifteen sets at opening; the September 2025 report confirms the twenty-five-minute interval and its later reduction to about nineteen minutes with a fourth train.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
  2. Asianet Newsable — Yellow Line technical snag halts service for 40 minutes (22 Sept 2025)
Claim 6 clm-d854a488fb6a7419 quantitative
The Takshashila Institution estimates the delay added 32 per cent to the cost, about 1,866 crore rupees, against the 410 crore saved by taking the cheapest bid
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The paper states the timeline extension, the resulting 32 per cent cost increase of approximately 1,866 crore rupees, and the 410 crore initially saved by choosing the Chinese bidder.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
Claim 7 clm-aa1d7605c5004fb9 quantitative
By June 2026 ten trains were running at a seven-minute peak headway, with the last two of the fifteen still in manufacture
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The June 2026 trade report counts ten operational trains at a seven-minute peak frequency and names the fourteenth and fifteenth as still being built.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Metro Rail News — 13th trainset delivered for the Yellow Line (June 2026)
Claim 8 clm-09419ade01aae837 quantitative
the civil works were finished in 2023 and the signalling was rated for the highest grade of automation
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The paper puts the structures complete in late 2023; the supplier release describes the signalling as the first CBTC project in India at GoA 4.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)
  2. Siemens Mobility — CBTC and automated train technology for Bengaluru Metro (10 Dec 2020)
Claim 9 clm-d3e334c52c7c4a39 descriptive
after Galwan, new rules required bidders from land-border countries to obtain security clearances, the supplier's Indian factory plan stalled and its personnel were refused visas
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The same paper is the source for the rule change, the halted factory and the visa refusals.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025)

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-08-26-claim-mapping effective 2026-07-26 · created 2026-08-26

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:302d751c232f435a640f22f8fe691804d75c4368b48f9d6d16be12c7c67414ee
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
9
of 9 claims mapped
7
source dossiers
7
publication dates recorded
1
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Bangalore Metro Rail Corporation Limited (BMRCL)
Actor types
utility
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

7 source dossiers

Takshashila Institution — Geopolitics of Bengaluru's Yellow Metro Line (9 Sept 2025) takshashila.org.in · 7 linked claims

Open original source ↗

Stable source ID
src-b3f70831c70dc965
Publisher
Name not classified · takshashila.org.in
Type / language
web-page · language not classified
Published
2025-09-09
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
Open archived copy ↗ · 2026-03-07
Content hash
No captured content hash
Locator
Open the recorded source note

Independent think-tank analysis and the load-bearing source for the delay chain: the December 2019 coach contract as the cheapest bid, the local-content rule, the 2020 border clash and the new security-clearance requirement, the 2022 pivot to an Indian joint venture, visas cleared only in December 2023, structures complete by late 2023, opening 11 August 2025 with 3 of 15 trainsets. Carries the impact figure.

Descriptive only — not page/paragraph exact
Claims linked
Siemens Mobility — CBTC and automated train technology for Bengaluru Metro (10 Dec 2020) press.siemens.com · 2 linked claims

Open original source ↗

Stable source ID
src-70e277425e6e4d49
Publisher
Name not classified · press.siemens.com
Type / language
web-page · language not classified
Published
2020-12-10
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Supplier primary source: CBTC with automatic train protection and supervision. States it will be the first such project in India rated for unattended operation — a capability claim by the vendor, not evidence of how the line actually runs.

Descriptive only — not page/paragraph exact
Claims linked
Railway Gazette International — Yellow Line inaugurated (Aug 2025) railwaygazette.com · 1 linked claim

Open original source ↗

Stable source ID
src-b7643355ea901d7d
Publisher
Name not classified · railwaygazette.com
Type / language
web-page · language not classified
Published
2025-08-12
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Decisive on the automation question: the trains are capable of unattended operation, but initially run in semi-automatic mode with a driver in the cab, to be upgraded after systems integration and regulatory approval. Direct fetch returned 403; outlet, article and these sentences confirmed through two independent search passes.

Descriptive only — not page/paragraph exact
Claims linked
Metro Rail Today — Yellow Line inaugurated, network expands to 76 km metrorailtoday.com · background

Open original source ↗

Stable source ID
src-43e405e543c283fc
Publisher
Name not classified · metrorailtoday.com
Type / language
web-page · language not classified
Published
2025-08-10
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Trade press for the launch facts: inaugurated 10 August 2025, 19.14 km, 16 stations, interchange with the Green Line, network to 76 km. Cites a project cost higher than the Takshashila figure.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
Metro Rail News — 13th trainset delivered for the Yellow Line (June 2026) metrorailnews.in · 1 linked claim

Open original source ↗

Stable source ID
src-344b0ebd5f1eacf6
Publisher
Name not classified · metrorailnews.in
Type / language
web-page · language not classified
Published
2026-06-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Most recent operational status: 13th six-coach set handed over 15 June 2026; 10 trains in service at a 7-minute peak headway; all 15 expected by August 2026.

Descriptive only — not page/paragraph exact
Claims linked
Asianet Newsable — Yellow Line technical snag halts service for 40 minutes (22 Sept 2025) newsable.asianetnews.com · 1 linked claim

Open original source ↗

Stable source ID
src-a2fadffb7122292a
Publisher
Name not classified · newsable.asianetnews.com
Type / language
web-page · language not classified
Published
2025-09-22
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Counterweight: a roughly 40-minute evening disruption acknowledged by the operator. Also confirms the headway sequence: three trains every 25 minutes at opening, a fourth cutting the wait to about 19 minutes.

Descriptive only — not page/paragraph exact
Claims linked
Deccan Herald — Yellow Line sustains 60k ridership despite low frequency deccanherald.com · background

Open original source ↗

Stable source ID
src-fb67eea454bc5e0a
Publisher
Name not classified · deccanherald.com
Type / language
web-page · language not classified
Published
2025-08-31
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-26
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Ridership since opening: an average of about 60,000 a day, rising 5 to 6 per cent when a fourth trainset cut the headway. Outlet blocks automated fetching; headline and figures confirmed through search.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
Known limits of this passport
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.