{ "schemaVersion": "1.0.0", "constitutionVersion": "1.0.0", "createdAt": "2026-08-12T00:00:00Z", "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.", "entity": { "type": "project", "id": "sf-muni-metro-atcs", "title": "Muni Metro Advanced Train Control System & Its Replacement", "canonicalUrl": "https://1001smartcities.org/projects/sf-muni-metro-atcs/" }, "currentRevisionId": "2026-08-22-evidence-baseline", "revisions": [ { "id": "2026-08-22-evidence-baseline", "createdAt": "2026-08-22T14:05:00Z", "effectiveAt": "2026-07-26", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 13 claims and 12 source dossiers.", "preparedBy": { "type": "automation", "label": "AI-assisted evidence preparation", "humanApproved": false }, "review": { "status": "unreviewed", "by": null, "date": null, "note": "Awaiting operator and domain-expert review; publication of this revision implies neither." }, "changes": [ { "operation": "add", "path": "/evidencePassport", "summary": "Added claim-level evidence mapping and source dossiers." }, { "operation": "add", "path": "/revisionHistory", "summary": "Established a permanent, hash-addressed baseline revision." } ], "snapshotHash": "sha256:a0420a5f980eb4fed98f1e582ba53e13acdada1400b280d9f654c3e4cdd918d7", "snapshot": { "asOf": "2026-07-26", "projectFingerprint": "sha256:50ddb3d775f72f75550af02327e5b1072e404582518f5f16f7d18d1f27ea35fd", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.", "machineChecks": [ "schema", "publication-diff-contract", "material-project-fingerprint", "claim-text-drift", "source-reference-resolution", "complete-source-dossier", "snapshot-hash" ] }, "projectState": { "status": "live", "outcome": "ongoing", "evidenceGrade": "official", "timeline": { "started": 1998, "ended": null } }, "governance": { "operator": "San Francisco Municipal Transportation Agency (SFMTA)", "actorTypes": [ "utility" ], "fundingModel": "public", "fundingDescription": "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": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-1cd3f79bcee30790", "field": "snippet", "text": "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.", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-6ce6ac0c7d42247a" ], "supportNote": "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": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-e19a330285ce2baa", "field": "snippet", "text": "The 1998 cutover gridlocked the subway", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4d58ba39f9ae63be", "src-e178bdc5068c0c71" ], "supportNote": "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": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-309b2c44f05df1e5", "field": "snippet", "text": "trains sent down wrong tracks, emergency brakes dropping", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-e178bdc5068c0c71" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-bd0b4c485c4aefe4", "field": "snippet", "text": "riders forcing doors open underground", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4d58ba39f9ae63be" ], "supportNote": "Market Street Railway: 'Subway service gridlocked, leaving passengers to force open doors in mid-tunnel to escape.'", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-274ec6a687e48a4e", "field": "snippet", "text": "SFMTA now calls the 1980s technology obsolete", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-df30cbed7e1f6339" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-3e4d811599e0c95d", "field": "snippet", "text": "signed a US$212M Hitachi Rail replacement in January 2025", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-f5e9e7c39a0b3bb1" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-57b32da3ffa1d4de", "field": "snippet", "text": "running to 2034", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-3af25e989dd2246f", "src-4f0ce597b0966bd3" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-e1d028a3d0ea4d20", "field": "impact", "text": "SFMTA reports the ageing system causes daily delays", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-083b91c7a07578bb" ], "supportNote": "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": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-532f0140c160b937", "field": "impact", "text": "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", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-6ce6ac0c7d42247a" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-1e597fd38e09f540", "field": "impact", "text": "SFMTA and Hitachi Rail project the replacement will add up to 20% capacity — a target, not a measurement.", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-60196cdc5a94041a" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-abb48b6eacddc990", "field": "lesson", "text": "Muni switched on ATCS and the new subway turnback together in 1998", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4d58ba39f9ae63be" ], "supportNote": "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": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-c2809b968041b45a", "field": "lesson", "text": "the replacement contract was signed in January 2025", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-f5e9e7c39a0b3bb1" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7d3d916fc29dbda3", "field": "lesson", "text": "does not finish before 2032", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-3af25e989dd2246f" ], "supportNote": "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.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } } ], "sources": [ { "id": "src-6ce6ac0c7d42247a", "title": "SFMTA — How Automatic Train Control Keeps Muni Metro Running (authority)", "url": "https://www.sfmta.com/project-updates/how-automatic-train-control-keeps-muni-metro-running", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-1cd3f79bcee30790", "clm-532f0140c160b937" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-df30cbed7e1f6339", "title": "SFMTA — Train Control Upgrade Project (authority)", "url": "https://www.sfmta.com/projects/train-control-upgrade-project", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-274ec6a687e48a4e" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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'.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-3af25e989dd2246f", "title": "SFMTA — Train Control Upgrade Project: Project Phasing (authority)", "url": "https://www.sfmta.com/train-control-upgrade-project-project-phasing", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-57b32da3ffa1d4de", "clm-7d3d916fc29dbda3" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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'.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-f5e9e7c39a0b3bb1", "title": "SFMTA — SFMTA partners with Hitachi Rail to upgrade Muni Metro technology (authority)", "url": "https://www.sfmta.com/project-updates/sfmta-partners-hitachi-rail-upgrade-muni-metro-technology", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-3e4d811599e0c95d", "clm-c2809b968041b45a" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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'.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-083b91c7a07578bb", "title": "SFMTA Board of Directors calendar item (authority)", "url": "https://www.sfmta.com/media/40167/download", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-e1d028a3d0ea4d20" ], "temporal": { "publishedAt": "2024-08-06", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-4d58ba39f9ae63be", "title": "Market Street Railway — Forty frustrating years underground (independent, transit-history nonprofit)", "url": "https://www.streetcar.org/forty-frustrating-years-underground/", "publisher": { "name": null, "domain": "streetcar.org", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-e19a330285ce2baa", "clm-bd0b4c485c4aefe4", "clm-abb48b6eacddc990" ], "temporal": { "publishedAt": "2021-12-10", "updatedAt": "2025-03-21", "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-e178bdc5068c0c71", "title": "Wikipedia — Muni Metro (tertiary, corroboration only)", "url": "https://en.wikipedia.org/wiki/Muni_Metro", "publisher": { "name": null, "domain": "en.wikipedia.org", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-e19a330285ce2baa", "clm-309b2c44f05df1e5" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-4f0ce597b0966bd3", "title": "Railway Gazette — SelTrac CBTC to control street-running trams as Muni resignalling agreed (trade press)", "url": "https://www.railwaygazette.com/light-rail-and-tram/seltrac-cbtc-to-control-street-running-trams-as-muni-resignalling-agreed/68312.article", "publisher": { "name": null, "domain": "railwaygazette.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-57b32da3ffa1d4de" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-60196cdc5a94041a", "title": "Railway-News, 2025 (trade press)", "url": "https://railway-news.com/san-francisco-advances-muni-metro-train-control-upgrade/", "publisher": { "name": null, "domain": "railway-news.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-1e597fd38e09f540" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-e0daba9a340befbe", "title": "Hitachi Rail press release, 13 February 2025 (vendor)", "url": "https://www.hitachi.com/en/press/articles/2025/02/0214a/", "publisher": { "name": null, "domain": "hitachi.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2025-02-13", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-20cc2f308899ac67", "title": "City and County of San Francisco — $130 million state grant for Muni train control (authority)", "url": "https://www.sf.gov/news--mayor-london-breed-announces-130-million-state-grant-upgrade-sfmtas-metro-technology", "publisher": { "name": null, "domain": "sf.gov", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-97b579e420e8116a", "title": "SFMTA — Approved Budget FY 2026-27 and FY 2027-28 (authority)", "url": "https://www.sfmta.com/project-updates/sfmta-approved-budget-fy-2026-27-and-fy-2027-28", "publisher": { "name": null, "domain": "sfmta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "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.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 13, "claimsMapped": 13, "sourcesTotal": 12, "sourcesUsedByClaims": 9, "sourcesWithPublicationDate": 3, "sourcesWithArchive": 0, "sourcesWithExactLocator": 0, "sourcesWithContentHash": 0 }, "limits": [ "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." ] } } ] }