{
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 "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": "mexico-city-metrobus",
  "title": "Metrobus: Mexico City's BRT Network and Its Open Real-Time Feed",
  "canonicalUrl": "https://1001smartcities.org/projects/mexico-city-metrobus/"
 },
 "currentRevisionId": "2026-08-20-source-dates",
 "revisions": [
  {
   "id": "2026-08-20-source-dates",
   "createdAt": "2026-08-20T18:42:52Z",
   "effectiveAt": "2026-07-26",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 1 claim and 12 source dossiers.",
   "preparedBy": {
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    "label": "AI-assisted evidence preparation",
    "humanApproved": false
   },
   "review": {
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    "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": "sha256:7e95979da453742aae050f8d193726c3f8f707e15257b807e0beed26830e908e",
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    "asOf": "2026-07-26",
    "projectFingerprint": "sha256:7aba62b5a732ade3c212e6c06f6a18e63e74fa81527ffc139092cbb6c50e4fcf",
    "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": "peer-reviewed",
     "timeline": {
      "started": 2005,
      "ended": null
     }
    },
    "governance": {
     "operator": "Metrobus, an organismo publico descentralizado of the Mexico City government, with about ten private empresas operadoras running the buses and separate trusts holding fare revenue",
     "actorTypes": [
      "utility",
      "private"
     ],
     "fundingModel": "ppp",
     "fundingDescription": "City capital works and operating contracts; buses financed and owned by private operating companies; the Insurgentes corridor was set up as a World Bank carbon-finance operation (P082656) and listed with the UN Clean Development Mechanism (project 4945)",
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-f52bfe64c4132061",
      "field": "impact",
      "text": "Peer-reviewed before-and-after measurements on the Insurgentes corridor found commuter exposure fell by up to 45% for CO, 54% for benzene and 30% for PM2.5",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-3fd6ca553b3ce540"
      ],
      "supportNote": "The study measured sharply lower commuter exposure to carbon monoxide, benzene and fine particles on the Insurgentes corridor, with no significant change in PM10.",
      "caveat": "The entry's lesson notes the measured gains came from the physical bus-fleet swap, not the data layer, which arrived thirteen years later.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
    "sources": [
     {
      "id": "src-3fd6ca553b3ce540",
      "title": "Wohrnschimmel et al., Atmospheric Environment (2008)",
      "url": "https://www.sciencedirect.com/science/article/abs/pii/S1352231008006936",
      "publisher": {
       "name": null,
       "domain": "sciencedirect.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
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      ],
      "temporal": {
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       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Peer-reviewed before-and-after measurement inside vehicles: 'The implementation of the BRT system resulted in reductions in commuters' exposure to CO, benzene and PM2.5 ranging between 20% and 70%', with reductions of up to 45% for CO, 54% for benzene and 30% for PM2.5, and no significant PM10 reduction. Carries the impact figures.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": "https://web.archive.org/web/20230719080814/https://www.sciencedirect.com/science/article/abs/pii/S1352231008006936",
       "archivedAt": "2023-07-19",
       "contentHash": null,
       "status": "archive-linked"
      }
     },
     {
      "id": "src-c19cf21be8ee687c",
      "title": "Bel & Holst, Transport Policy 63 (2018) 209-220",
      "url": "https://econpapers.repec.org/RePEc:eee:trapol:v:63:y:2018:i:c:p:209-220",
      "publisher": {
       "name": null,
       "domain": "econpapers.repec.org",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
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       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Differences-in-differences assessment of ambient monitoring data: 'Results show that BRT constitutes an effective environmental policy, reducing emissions of CO, NOX, and PM10.' Independent of the operator.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-1eeae47ff032996a",
      "title": "Decreto por el que se crea el organismo publico descentralizado Metrobus (Gaceta Oficial del Distrito Federal, 9 March 2005)",
      "url": "https://mexico.justia.com/estatales/ciudad-de-mexico/decretos/decreto-por-el-que-se-crea-el-organismo-publico-descentralizado-metrobus",
      "publisher": {
       "name": null,
       "domain": "mexico.justia.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2005-03-09",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Creates Metrobus as a decentralised public body 'con personalidad juridica, patrimonio propio y autonomia tecnica y administrativa' ('with legal personality, its own assets and technical and administrative autonomy'), charged with planning, administering and controlling the corridor system.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-bf8cc58e0b28ae9a",
      "title": "Proyecto Metrobus Electrico — La organizacion del sistema de Metrobus",
      "url": "http://metrobuselectrico.com/organizacion-del-sistema-de-metrobus/",
      "publisher": {
       "name": null,
       "domain": "metrobuselectrico.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2023-03-10",
       "updatedAt": "2023-04-04",
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "On bus ownership: 'Las empresas transportistas son las encargadas de comprar, operar y darle el mantenimiento adecuado a los autobuses' ('The transport companies are responsible for buying, operating and properly maintaining the buses'); fare revenue is held in trusts, one per line, and distributed 'entre las empresas prestadoras de los servicios del sistema'.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-6865ca89003164d2",
      "title": "Metrobus CDMX — open operational data in GTFS-RT",
      "url": "https://x.com/metrobuscdmx/status/1062847945198968832",
      "publisher": {
       "name": null,
       "domain": "x.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2018-11-12",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Operator announcement of the real-time feed: 'MB en colaboracion con @Labcdmx pone a disposicion datos de operacion en tiempo real 1. Avisos sobre contingencias en el sistema 2. Tiempo estimado de arribo en las estaciones 3. Reporte GPS de la ubicacion de las unidades en operacion. En formato GTFS-RT' ('Metrobus, with Labcdmx, makes real-time operating data available: system incident alerts, estimated arrival times at stations, GPS reports of the location of units in operation, in GTFS-RT format').",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-772e9ac75f56c091",
      "title": "Metrobus — Datos Abiertos (official portal page)",
      "url": "https://www.metrobus.cdmx.gob.mx/portal-ciudadano/datos-abiertos",
      "publisher": {
       "name": null,
       "domain": "metrobus.cdmx.gob.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Operator's open-data page: static GTFS is downloadable, the GTFS-Realtime endpoint requires requesting a user account. The page returned HTTP 503 to automated fetching from our sandbox and was verified via search results; an editor should open it manually before sealing.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-633ecf25d6b027ff",
      "title": "Portal de Datos Abiertos de la CDMX — Afluencia diaria de Metrobus",
      "url": "https://datos.cdmx.gob.mx/dataset/afluencia-diaria-de-metrobus-cdmx",
      "publisher": {
       "name": null,
       "domain": "datos.cdmx.gob.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Daily boarding counts per line and station published as a city dataset. The city's data policy states data are published 'para su libre uso y sin discriminacion alguna en su acceso' and 'bajo terminos que permitan reutilizarlos y redistribuirlos' ('for free use and without discrimination in access', 'under terms permitting reuse and redistribution'); no named licence such as CC BY is stated. Returned HTTP 503 to automated fetching.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-3687443dfd7be368",
      "title": "Telediario — Metrobus abre centro de control para monitorear unidades",
      "url": "https://www.telediario.mx/comunidad/metrobus-cdmx-abre-centro-control-para-monitorear-unidades",
      "publisher": {
       "name": null,
       "domain": "telediario.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Control centre inaugurated 20 June 2023 in the Escandon neighbourhood; at opening the director said 'el monitoreo en tiempo real funciona en la totalidad de la Linea 3' ('real-time monitoring works across the whole of Line 3'), with 4,475 onboard and 513 station cameras planned and the monitoring contract held by Sonda Mexico. Single media source, reported as such.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-1015f0d2756dd4e9",
      "title": "Ganar-Ganar — Una de cada cinco unidades del Metrobus ya es electrica (July 2026)",
      "url": "https://ganar-ganar.mx/2026/07/09/una-de-cada-cinco-unidades-del-metrobus-ya-es-electrica-en-cdmx/",
      "publisher": {
       "name": null,
       "domain": "ganar-ganar.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2026-07-09",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Currency check: 'El sistema cuenta con 174 unidades electricas de un total de 890 autobuses' ('The system has 174 electric units out of a total of 890 buses'); Line 3 has run a fully electric fleet since March 2023.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-fd73bb318e252cc6",
      "title": "El Universal — Mas amparos y marchas contra la Linea 7 del Metrobus (2017)",
      "url": "https://www.eluniversal.com.mx/articulo/metropoli/cdmx/2017/07/5/mas-amparos-y-marchas-contra-la-linea-7-del-metrobus",
      "publisher": {
       "name": null,
       "domain": "eluniversal.com.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2017-07-05",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Construction of Line 7 was suspended by an amparo from the Academia Mexicana de Derecho Ambiental over the protected Chapultepec surroundings; the ruling allowed the confined lane to proceed 'pero no puede cortar los arboles' ('but it may not cut down the trees').",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-80a014734541f75e",
      "title": "Letras Libres — Metrobus Reforma, una linea incompleta",
      "url": "https://letraslibres.com/politica/metrobus-reforma-una-linea-incompleta/",
      "publisher": {
       "name": null,
       "domain": "letraslibres.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2017-07-18",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Design critique: 'Los autobuses de dos pisos, incompatibles con el resto de las unidades de transporte de Metrobus' ('The double-decker buses, incompatible with the rest of Metrobus's vehicles'), and 'Solo los primeros quince kilometros se haran en los novedosos autobuses de dos niveles, el resto del trayecto se realizara en autobuses compactos' ('Only the first fifteen kilometres will be run with the new double-deckers; the rest of the route will use compact buses'). Opinion piece, used only for the design objection.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-f53aa5362313f9c4",
      "title": "Gobierno de la Ciudad de Mexico — press release on the Circuito Interior line and the first electric bus",
      "url": "https://www.jefaturadegobierno.cdmx.gob.mx/comunicacion/nota/anuncia-jefa-de-gobierno-nueva-linea-de-metrobus-en-circuito-interior-y-llegada-del-primer-autobus-electrico",
      "publisher": {
       "name": null,
       "domain": "jefaturadegobierno.cdmx.gob.mx",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Official account of the 2005 launch: 'El 19 de junio de 2005 inicio operaciones con una linea de servicio: 20 kilometros de corredor de Indios Verdes a Dr. Galvez, 80 autobuses articulados y transportaba 220 mil pasajeros al dia' ('On 19 June 2005 it began operating with one line: a 20 km corridor from Indios Verdes to Dr. Galvez, 80 articulated buses, carrying 220,000 passengers a day'). Also gives seven lines, 140 km of corridors and 1.5 million daily passengers at the time of writing. Returned HTTP 503 to automated fetching; verified via search results.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
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       "contentHash": null,
       "status": "not-captured"
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     }
    ],
    "coverage": {
     "claimsTotal": 1,
     "claimsMapped": 1,
     "sourcesTotal": 12,
     "sourcesUsedByClaims": 1,
     "sourcesWithPublicationDate": 6,
     "sourcesWithArchive": 1,
     "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."
    ]
   }
  }
 ]
}