1001 Smart Cities
🇺🇸 San Francisco

Muni Metro Advanced Train Control System & Its Replacement

🤖 AI-generated summary · ◆ 13 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

13 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

Drivers hand the train to the computer at the subway portal. That handover, switched on in 1998, gridlocked the tunnel for weeks; the US$212M contract replacing the 1980s technology runs to 2034.

Outcome🔄 Ongoing
Evidence🏛️ Official
what does this mean?The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →
Run bySan Francisco Municipal Transportation Agency (SFMTA)
Scale🏙️ City-wide
Cost≈US$700M programme across seven phases (SFMTA); US$212M Hitachi Rail design-and-supply contract plus up to US$114M for ten years of support (2032-2042)
FundingSFMTA capital plan plus California TIRCP state grants — US$30M for Phase 1 in July 2022 and US$130M for Phase 2

Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 9 more in San Francisco · 🚌 Public transport guide · 🚲 Mobility projects

Muni Metro drivers steer by hand on San Francisco's streets, then hand the train over at the subway portal: the Advanced Train Control System drives it through the Market Street tunnel, with the operator aboard and ready to take back control. The 1998 cutover gridlocked the subway — trains sent down wrong tracks, emergency brakes dropping, riders forcing doors open underground — and problems lingered for days, then recurred for years. SFMTA now calls the 1980s technology obsolete and signed a US$212M Hitachi Rail replacement in January 2025, running to 2034.

Live 📅 since 1998

📊 Impact

SFMTA reports the ageing system causes daily delays: a train that loses its data link to ATCS must run in manual mode at half its maximum speed, which slows every train behind it. SFMTA and Hitachi Rail project the replacement will add up to 20% capacity — a target, not a measurement. No independent audit of either figure was found.

🎓 Lesson

The date a contract is signed, the date a system is cut over and the date it works are three different dates. Muni switched on ATCS and the new subway turnback together in 1998 and lost the tunnel for days; the replacement contract was signed in January 2025 and, by SFMTA's own phasing, does not finish before 2032 and may run to 2034.

🚲 MobilityPublic transportSensors & IoTConnectivity & 5G

Sources

↗ SFMTA — How Automatic Train Control Keeps Muni Metro Running (authority)The load-bearing source for the hybrid. 'The ATCS operates trains in the subway, keeping them safely and appropriately spaced apart by controlling train speeds, switches and signals', while 'Muni Metro trains operate under the control of the train operator on San Francisco streets'. An operator rides every train and 'is always prepared to take over if necessary'. Also the failure mode: when the handshake fails 'the train must travel in manual mode at half its maximum speed, which also slows all other trains along the network'. Calls ATCS 'one of the first computerized train control systems in the United States' — the entry attributes rather than asserts that.
↗ SFMTA — Train Control Upgrade Project (authority)Dates and characterises the system being replaced: 'based on 1980s technology that was installed in the Market Street subway in 1998', 'designed to last 20 to 25 years', with obsolete components that 'are no longer made'.
↗ SFMTA — Train Control Upgrade Project: Project Phasing (authority)Seven overlapping phases. Phase 1 installs CBTC 'at street level along the Embarcadero and Third Street corridors' from 2026; Phase 2 installs and activates it 'in the subway alongside the existing Automatic Train Control System' in 2027 or 2028; N Judah around 2028, T Third/K Ingleside/M Ocean View 2029, J Church/L Taraval 2030; 'complete installation between 2032 and 2034'.
↗ SFMTA — SFMTA partners with Hitachi Rail to upgrade Muni Metro technology (authority)Contract source, sentence-level: 'We finalized a historic supplier contract with Hitachi Rail in January 2025.' Approximately US$212M for design and procurement, up to US$114M for ten years of post-project support 2032-2042, and an option on a further US$238M for 2042-2052. Describes the existing installation as '30-year-old tech in the subway'.
↗ SFMTA Board of Directors calendar item (authority)Published 6 August 2024Source for the delay claim: 'in its current condition, train control has caused an increasing number of delays to Muni's rail service due to daily communication failures, train timeouts and component failures.' PDF; could not be rendered by the review tooling, sentence verified through the search index of the same document.
Show 7 more sourcesShow fewer
↗ Market Street Railway — Forty frustrating years underground (independent, transit-history nonprofit)Published 10 December 2021 · updated 21 March 2025The account of the launch: 'The first day of the new ATCS system and full use of the Muni Metro turnback, in 1998, was a spectacular and total failure, dubbed the Muni Metro Meltdown by the press. Subway service gridlocked, leaving passengers to force open doors in mid-tunnel to escape.' Also the context — a new moving-block system introduced alongside an incomplete Breda fleet replacement. The exact day is not settled: community posts give 24 August 1998, no press original was reachable, so the entry says 1998 and nothing finer.
↗ Wikipedia — Muni Metro (tertiary, corroboration only)Corroborates the season and the failure modes only: the 'Muni meltdown' of 'the summer of 1998', with the system 'sending trains down the wrong tracks, and, more often, inappropriately applying emergency braking', and the San Francisco Chronicle stunt in which a reporter on foot beat a reporter riding the subway across downtown. Not relied on for any number.
↗ Railway Gazette — SelTrac CBTC to control street-running trams as Muni resignalling agreed (trade press)Independent confirmation of the replacement scope and sequence: first phase puts CBTC on street-running track for the first time, on the Embarcadero and Third Street corridors; tunnel fit-out 2027-28; programme completion 2034. Also identifies the continuity — the replacement is a later generation of the same SelTrac family, originally Alcatel's inductive-loop moving-block product and now owned by Hitachi Rail. Note the framing limit: Vancouver's SkyTrain has run the same SelTrac lineage since 1985, so no 'oldest in North America' claim is made.
↗ Railway-News, 2025 (trade press)Carries the capacity target as a projection — capacity gains of 'up to 20 percent' across the 71-mile network — plus 'Passenger services using the new system are currently expected to begin between 2028 and 2034' and the WSP / PGH Wong programme-management joint venture.
↗ Hitachi Rail press release, 13 February 2025 (vendor)Vendor confirmation of scope: SelTrac CBTC across the 71-mile, 33-station network, a single system covering both subway and surface, with a ten-year service support agreement and an option for ten more. Vendor material — used only for scope, not for benefits.
↗ City and County of San Francisco — $130 million state grant for Muni train control (authority)Funding source: a US$130M grant from California's Transit and Intercity Rail Capital Program for Phase 2, following a US$30M TIRCP grant for Phase 1 in July 2022, against a stated total of about US$700M for all seven phases. The page returned an empty body to the review tooling; the figures were verified through the search index of the same page.
↗ SFMTA — Approved Budget FY 2026-27 and FY 2027-28 (authority)The budget-crisis counterweight, and the distinction that matters: the crisis is on the operating side. SFMTA faced a US$307M shortfall in the year beginning 1 July 2026, closed with a US$200M state loan routed through the Metropolitan Transportation Commission; the board adopted a balanced two-year budget on 21 April 2026. No source found says the capital train-control programme has been cut or deferred because of it — and none found confirms that the later phases are fully committed either.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 1998. 3 of 12 sources carry a publication date, from 10 December 2021 to 13 February 2025.

When the sources were published

  1. Market Street Railway · ngoMarket Street Railway — Forty frustrating years underground (independent, transit-history nonprofit) · updated 21 March 2025
  2. San Francisco Municipal Transportation Agency (SFMTA) · operatorSFMTA Board of Directors calendar item (authority)
  3. Hitachi · vendorHitachi Rail press release, 13 February 2025 (vendor)

Every source, with links ↑

What happened to this record

  1. Sources last read
  2. Entered the record

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 13 claims with their sources · the forensic record

Evidence Passport · public beta 13 addressable claims, 12 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 13

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-1cd3f79bcee30790 descriptive
Muni Metro drivers steer by hand on San Francisco's streets, then hand the train over at the subway portal: the Advanced Train Control System drives it through the Market Street tunnel, with the operator aboard and ready to take back control.
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA's own explainer states the hybrid split directly: 'The ATCS operates trains in the subway, keeping them safely and appropriately spaced apart by controlling train speeds, switches and signals', while 'Muni Metro trains operate under the control of the train operator on San Francisco streets.' An operator rides every train and, per the same page, 'is always prepared to take over if necessary.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. SFMTA — How Automatic Train Control Keeps Muni Metro Running (authority)
Claim 2 clm-e19a330285ce2baa quantitative
The 1998 cutover gridlocked the subway
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Market Street Railway: 'Subway service gridlocked, leaving passengers to force open doors in mid-tunnel to escape.' Wikipedia corroborates the season and severity: a 'spectacular service crisis, widely referred to as the "Muni meltdown", in the summer of 1998.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Market Street Railway — Forty frustrating years underground (independent, transit-history nonprofit)
  2. Wikipedia — Muni Metro (tertiary, corroboration only)
Claim 3 clm-309b2c44f05df1e5 descriptive
trains sent down wrong tracks, emergency brakes dropping
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Wikipedia, in the 'Muni meltdown' section (footnoted separately from its account of the door-forcing incident): 'Common occurrences included sending trains down the wrong tracks, and, more often, inappropriately applying emergency braking.'
Caveat
This detail rests solely on Wikipedia's summary. The entry's independent, contemporary source for the 1998 launch — Market Street Railway — describes the door-forcing but does not mention trains running onto wrong tracks or emergency brakes engaging; no independent or authority source among this entry's citations confirms either detail directly.

Sources carrying this claim

  1. Wikipedia — Muni Metro (tertiary, corroboration only)
Claim 5 clm-274ec6a687e48a4e quantitative
SFMTA now calls the 1980s technology obsolete
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA's project page: 'Today, Muni Metro runs on an Automatic Train Control System based on 1980s technology that was installed in the Market Street subway in 1998.' It was 'designed to last 20 to 25 years', and 'some parts of the system are no longer made.'
Caveat
SFMTA's own material does not use the word 'obsolete'. It says the system was 'designed to last 20 to 25 years' and that 'some parts... are no longer made' — this entry's word 'obsolete' summarises that language rather than quoting it.

Sources carrying this claim

  1. SFMTA — Train Control Upgrade Project (authority)
Claim 6 clm-3e4d811599e0c95d quantitative
signed a US$212M Hitachi Rail replacement in January 2025
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA: 'We finalized a historic supplier contract with Hitachi Rail in January 2025.' The same page lists 'Cost: approximately $212M' for design and procurement.
Caveat
The US$212M figure is what SFMTA's own page lists as covering 'design and procurement' — the first component of a larger capital programme. The same page separately lists up to US$114M for ten years of post-project support (2032-2042) and an option on a further US$238M (2042-2052); the US$212M contract itself does not cover the whole programme.

Sources carrying this claim

  1. SFMTA — SFMTA partners with Hitachi Rail to upgrade Muni Metro technology (authority)
Claim 7 clm-57b32da3ffa1d4de quantitative
running to 2034
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA's project-phasing page: 'We expect to begin installing the new train control system in 2026 and complete installation between 2032 and 2034.' Railway Gazette (trade press) independently reports 'programme completion 2034.'
Caveat
SFMTA's own phasing page is not fully consistent about a single completion year: one sentence there states the project will 'complete installation and testing on the final phase by 2032', while another states it will 'complete installation between 2032 and 2034'. This entry's snippet uses the later end of that range; its lesson (see the paired claim there) uses the earlier end, as if the two were separate facts. They describe the same multi-phase installation programme, not the duration of the US$212M contract itself, which covers only design and procurement.

Sources carrying this claim

  1. SFMTA — Train Control Upgrade Project: Project Phasing (authority)
  2. Railway Gazette — SelTrac CBTC to control street-running trams as Muni resignalling agreed (trade press)
Claim 8 clm-e1d028a3d0ea4d20 descriptive
SFMTA reports the ageing system causes daily delays
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA Board of Directors calendar item (SFMTA Calendar Date: August 6, 2024): 'In its current condition, train control has caused an increasing number of delays to Muni's rail service due to daily communication failures, train timeouts and component failures.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. SFMTA Board of Directors calendar item (authority)
Claim 9 clm-532f0140c160b937 descriptive
a train that loses its data link to ATCS must run in manual mode at half its maximum speed, which slows every train behind it
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA: 'the train and the ATCS don't communicate and the train must travel in manual mode at half its maximum speed, which also slows all other trains along the network.'
Caveat
SFMTA's own wording is broader than 'behind it': it says a train running in manual mode 'also slows all other trains along the network', not only the trains following it on the same line.

Sources carrying this claim

  1. SFMTA — How Automatic Train Control Keeps Muni Metro Running (authority)
Claim 10 clm-1e597fd38e09f540 quantitative
SFMTA and Hitachi Rail project the replacement will add up to 20% capacity — a target, not a measurement.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Railway-News: 'San Francisco expects this upgrade to increase service capacity by up to 20%' — framed throughout the article as an expectation for the finished programme, not a measured result.
Caveat
Railway-News attributes this expectation to San Francisco (SFMTA), not jointly to Hitachi Rail. Hitachi Rail's own press release among this entry's sources describes the technology only as 'boosting capacity and revenue potential', without a percentage figure — no source found credits Hitachi Rail directly with the 20% number.

Sources carrying this claim

  1. Railway-News, 2025 (trade press)
Claim 11 clm-abb48b6eacddc990 quantitative
Muni switched on ATCS and the new subway turnback together in 1998
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Market Street Railway: 'The first day of the new ATCS system and full use of the Muni Metro turnback, in 1998, was a spectacular and total failure, dubbed the Muni Metro Meltdown by the press.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Market Street Railway — Forty frustrating years underground (independent, transit-history nonprofit)
Claim 12 clm-c2809b968041b45a quantitative
the replacement contract was signed in January 2025
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA: 'We finalized a historic supplier contract with Hitachi Rail in January 2025.'
Caveat
SFMTA's own account dates contract finalisation to January 2025. Hitachi Rail's press release announcing the deal (also among this entry's sources) is dated 13 February 2025 — a later public announcement of the same deal, not a competing signing date.

Sources carrying this claim

  1. SFMTA — SFMTA partners with Hitachi Rail to upgrade Muni Metro technology (authority)
Claim 13 clm-7d3d916fc29dbda3 quantitative
does not finish before 2032
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
SFMTA's project-phasing page: 'We expect the Train Control Upgrade Project to begin detailed design in 2025 and complete installation and testing on the final phase by 2032.'
Caveat
This is SFMTA's earlier, single-year completion statement ('by 2032'). The same page also gives a range extending to 2034 for the same installation programme, and Railway Gazette (trade press) reports 2034 as the expected programme completion — so 'not before 2032' is the most conservative reading available, not the only one the sources support. See the paired claim on 'running to 2034' in the snippet.

Sources carrying this claim

  1. SFMTA — Train Control Upgrade Project: Project Phasing (authority)
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

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 2026-08-22-evidence-baseline effective 2026-07-26 · created 2026-08-22

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

sha256:a0420a5f980eb4fed98f1e582ba53e13acdada1400b280d9f654c3e4cdd918d7
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
13
of 13 claims mapped
12
source dossiers
3
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
San Francisco Municipal Transportation Agency (SFMTA)
Actor types
utility
Funding model
public
Funding description
SFMTA capital plan plus California TIRCP state grants — US$30M for Phase 1 in July 2022 and US$130M for Phase 2
Cost
≈US$700M programme across seven phases (SFMTA); US$212M Hitachi Rail design-and-supply contract plus up to US$114M for ten years of support (2032-2042)
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

12 source dossiers

SFMTA — How Automatic Train Control Keeps Muni Metro Running (authority) sfmta.com · 2 linked claims

Open original source ↗

Stable source ID
src-6ce6ac0c7d42247a
Publisher
Name not classified · sfmta.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The load-bearing source for the hybrid. 'The ATCS operates trains in the subway, keeping them safely and appropriately spaced apart by controlling train speeds, switches and signals', while 'Muni Metro trains operate under the control of the train operator on San Francisco streets'. An operator rides every train and 'is always prepared to take over if necessary'. Also the failure mode: when the handshake fails 'the train must travel in manual mode at half its maximum speed, which also slows all other trains along the network'. Calls ATCS 'one of the first computerized train control systems in the United States' — the entry attributes rather than asserts that.

Descriptive only — not page/paragraph exact
Claims linked
SFMTA — Train Control Upgrade Project (authority) sfmta.com · 1 linked claim

Open original source ↗

Stable source ID
src-df30cbed7e1f6339
Publisher
Name not classified · sfmta.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Dates and characterises the system being replaced: 'based on 1980s technology that was installed in the Market Street subway in 1998', 'designed to last 20 to 25 years', with obsolete components that 'are no longer made'.

Descriptive only — not page/paragraph exact
Claims linked
SFMTA — Train Control Upgrade Project: Project Phasing (authority) sfmta.com · 2 linked claims

Open original source ↗

Stable source ID
src-3af25e989dd2246f
Publisher
Name not classified · sfmta.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Seven overlapping phases. Phase 1 installs CBTC 'at street level along the Embarcadero and Third Street corridors' from 2026; Phase 2 installs and activates it 'in the subway alongside the existing Automatic Train Control System' in 2027 or 2028; N Judah around 2028, T Third/K Ingleside/M Ocean View 2029, J Church/L Taraval 2030; 'complete installation between 2032 and 2034'.

Descriptive only — not page/paragraph exact
Claims linked
SFMTA — SFMTA partners with Hitachi Rail to upgrade Muni Metro technology (authority) sfmta.com · 2 linked claims

Open original source ↗

Stable source ID
src-f5e9e7c39a0b3bb1
Publisher
Name not classified · sfmta.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Contract source, sentence-level: 'We finalized a historic supplier contract with Hitachi Rail in January 2025.' Approximately US$212M for design and procurement, up to US$114M for ten years of post-project support 2032-2042, and an option on a further US$238M for 2042-2052. Describes the existing installation as '30-year-old tech in the subway'.

Descriptive only — not page/paragraph exact
Claims linked
SFMTA Board of Directors calendar item (authority) sfmta.com · 1 linked claim

Open original source ↗

Stable source ID
src-083b91c7a07578bb
Publisher
Name not classified · sfmta.com
Type / language
web-page · language not classified
Published
2024-08-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Source for the delay claim: 'in its current condition, train control has caused an increasing number of delays to Muni's rail service due to daily communication failures, train timeouts and component failures.' PDF; could not be rendered by the review tooling, sentence verified through the search index of the same document.

Descriptive only — not page/paragraph exact
Claims linked
Market Street Railway — Forty frustrating years underground (independent, transit-history nonprofit) streetcar.org · 3 linked claims

Open original source ↗

Stable source ID
src-4d58ba39f9ae63be
Publisher
Name not classified · streetcar.org
Type / language
web-page · language not classified
Published
2021-12-10
Updated
2025-03-21
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The account of the launch: 'The first day of the new ATCS system and full use of the Muni Metro turnback, in 1998, was a spectacular and total failure, dubbed the Muni Metro Meltdown by the press. Subway service gridlocked, leaving passengers to force open doors in mid-tunnel to escape.' Also the context — a new moving-block system introduced alongside an incomplete Breda fleet replacement. The exact day is not settled: community posts give 24 August 1998, no press original was reachable, so the entry says 1998 and nothing finer.

Descriptive only — not page/paragraph exact
Claims linked
Wikipedia — Muni Metro (tertiary, corroboration only) en.wikipedia.org · 2 linked claims

Open original source ↗

Stable source ID
src-e178bdc5068c0c71
Publisher
Name not classified · en.wikipedia.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Corroborates the season and the failure modes only: the 'Muni meltdown' of 'the summer of 1998', with the system 'sending trains down the wrong tracks, and, more often, inappropriately applying emergency braking', and the San Francisco Chronicle stunt in which a reporter on foot beat a reporter riding the subway across downtown. Not relied on for any number.

Descriptive only — not page/paragraph exact
Claims linked
Railway Gazette — SelTrac CBTC to control street-running trams as Muni resignalling agreed (trade press) railwaygazette.com · 1 linked claim

Open original source ↗

Stable source ID
src-4f0ce597b0966bd3
Publisher
Name not classified · railwaygazette.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Independent confirmation of the replacement scope and sequence: first phase puts CBTC on street-running track for the first time, on the Embarcadero and Third Street corridors; tunnel fit-out 2027-28; programme completion 2034. Also identifies the continuity — the replacement is a later generation of the same SelTrac family, originally Alcatel's inductive-loop moving-block product and now owned by Hitachi Rail. Note the framing limit: Vancouver's SkyTrain has run the same SelTrac lineage since 1985, so no 'oldest in North America' claim is made.

Descriptive only — not page/paragraph exact
Claims linked
Railway-News, 2025 (trade press) railway-news.com · 1 linked claim

Open original source ↗

Stable source ID
src-60196cdc5a94041a
Publisher
Name not classified · railway-news.com
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Carries the capacity target as a projection — capacity gains of 'up to 20 percent' across the 71-mile network — plus 'Passenger services using the new system are currently expected to begin between 2028 and 2034' and the WSP / PGH Wong programme-management joint venture.

Descriptive only — not page/paragraph exact
Claims linked
Hitachi Rail press release, 13 February 2025 (vendor) hitachi.com · background

Open original source ↗

Stable source ID
src-e0daba9a340befbe
Publisher
Name not classified · hitachi.com
Type / language
web-page · language not classified
Published
2025-02-13
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-26
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Vendor confirmation of scope: SelTrac CBTC across the 71-mile, 33-station network, a single system covering both subway and surface, with a ten-year service support agreement and an option for ten more. Vendor material — used only for scope, not for benefits.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
City and County of San Francisco — $130 million state grant for Muni train control (authority) sf.gov · background

Open original source ↗

Stable source ID
src-20cc2f308899ac67
Publisher
Name not classified · sf.gov
Type / language
web-page · language not classified
Published
Not recorded
Updated
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Record last verified
2026-07-26
Dossier created
2026-08-22
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Funding source: a US$130M grant from California's Transit and Intercity Rail Capital Program for Phase 2, following a US$30M TIRCP grant for Phase 1 in July 2022, against a stated total of about US$700M for all seven phases. The page returned an empty body to the review tooling; the figures were verified through the search index of the same page.

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SFMTA — Approved Budget FY 2026-27 and FY 2027-28 (authority) sfmta.com · background

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src-97b579e420e8116a
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Name not classified · sfmta.com
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web-page · language not classified
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Updated
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Source last checked
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Record last verified
2026-07-26
Dossier created
2026-08-22
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Archive
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The budget-crisis counterweight, and the distinction that matters: the crisis is on the operating side. SFMTA faced a US$307M shortfall in the year beginning 1 July 2026, closed with a US$200M state loan routed through the Metropolitan Transportation Commission; the board adopted a balanced two-year budget on 21 April 2026. No source found says the capital train-control programme has been cut or deferred because of it — and none found confirms that the later phases are fully committed either.

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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.

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Compare this project

🇺🇸 MTA Subway Communications-Based Train Control · New York City Two old subways swapping signals decade by decade: New York started in 2009, San Francisco signed Hitachi in 2025 for work due by 2034. 🇮🇳 Namma Metro Yellow Line: A Finished Line Waiting for Its Trains · Bengaluru Bengaluru's line is rated to run unattended and keeps a driver; Muni's operator hands the train over only at the tunnel portal. 🇯🇵 Nanko Port Town Line (New Tram) Driverless Guideway · Osaka Osaka took its crews off in 1991, put them back after the 1993 runaway, took them off again in 2000; Muni's operator never left.

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🚦 Asphalt or algorithms📖 LoRaWAN📖 Adaptive traffic signals📖 Air quality index (AQI)
📎 Cite this project

1001 Smart Cities (2026). “Muni Metro Advanced Train Control System & Its Replacement” — San Francisco, United States. The Smart City Atlas. https://1001smartcities.org/projects/sf-muni-metro-atcs/ (last verified 2026-07-26). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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