{
 "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": "santiago-vehicle-restriction",
  "title": "Restriccion Vehicular: Santiago's Vintage-Tiered Plate Rationing",
  "canonicalUrl": "https://1001smartcities.org/projects/santiago-vehicle-restriction/"
 },
 "currentRevisionId": "2026-08-20-source-dates",
 "revisions": [
  {
   "id": "2026-08-20-source-dates",
   "createdAt": "2026-08-20T19:03:10Z",
   "effectiveAt": "2026-07-26",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 1 claim and 8 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": "sha256:33264c2fed302c0661156bae4215bff338cf9bcc4854725a084f7be8cb0c7d79",
   "snapshot": {
    "asOf": "2026-07-26",
    "projectFingerprint": "sha256:86b43a7f170d5928759c8cee3a8d56f562e972a921200049c261fc169e88d48a",
    "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": 1992,
      "ended": null
     }
    },
    "governance": {
     "operator": "Ministerio de Transportes y Telecomunicaciones and its Metropolitan regional secretariat set and publish the restriction; the Seremi del Medio Ambiente RM, supported by the Delegacion Presidencial Regional Metropolitana, runs the Gestion de Episodios Criticos that declares the episodes adding digits; Carabineros de Chile and the MTT inspection unit enforce it",
     "actorTypes": [
      "national-government",
      "regional-government"
     ],
     "fundingModel": "public",
     "fundingDescription": null,
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-3a65f784f7953c6b",
      "field": "impact",
      "text": "the temporary bans reduce car trips by 6-9% during peak hours and by 7-8% off-peak",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-9e53dd6f17b42ca4"
      ],
      "supportNote": "The evaluation exploits the air-quality index thresholds that announce the warnings as instruments in a fuzzy regression discontinuity design.",
      "caveat": "No comparable evaluation of the permanent, non-episode restriction was found by this desk, and none is claimed in the entry.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
    "sources": [
     {
      "id": "src-48214fd6b8b1e2aa",
      "title": "Ministerio de Transportes y Telecomunicaciones — Restriccion vehicular 2026 (authority)",
      "url": "https://mtt.gob.cl/restriccion-vehicular-2026/",
      "publisher": {
       "name": null,
       "domain": "mtt.gob.cl",
       "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": "The transport ministry's own standing page for the measure, the correct primary citation for the calendar and the exemption rules. Direct fetch returned HTTP 503 twice from this desk on 2026-07-26; every fact it would carry is instead sourced to the environment ministry and BioBioChile entries below, which agree on dates, comunas, hours and digit tables.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-4a961397ed94dc15",
      "title": "Ministerio del Medio Ambiente — Autoridades lanzan Gestion de Episodios Criticos (GEC) 2026 (authority)",
      "url": "https://mma.gob.cl/autoridades-lanzan-gestion-de-episodios-criticos-gec-2026-para-enfrentar-la-mala-calidad-del-aire-en-la-region-metropolitana/",
      "publisher": {
       "name": null,
       "domain": "mma.gob.cl",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2026-04-30",
       "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": "Fetched. Dates the GEC period 1 May to 31 August; states the permanent restriction falls on sello verde vehicles registered 2011 and earlier and motorcycles 2010 and earlier across the Provincia de Santiago, San Bernardo and Puente Alto, with non-seal vehicles banned from the Americo Vespucio ring; gives the weekly digit cycle from 4 May and the 07:30-21:00 window; and states that when Alerta, Preemergencia or Emergencia is decreed further digits are added to the ban. Also the source for the Seremi de Transportes handling exemption authorisations.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-f1e5a8733c692517",
      "title": "Aire Region Metropolitana (MMA) — Plan Operacional GEC (authority)",
      "url": "https://airerm.mma.gob.cl/plan-operacional-gec/",
      "publisher": {
       "name": null,
       "domain": "airerm.mma.gob.cl",
       "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": "Fetched. Names the two instruments behind the episode declaration: the Sistema de Vigilancia de Calidad del Aire operated by the environment ministry, and the Sistema de Pronostico, with MP10 forecasting administered by the Direccion Meteorologica de Chile and MP2.5 by the MMA. The page does not publish the numeric declaration thresholds, so no threshold value is quoted in this entry. The linked Plan Operacional GEC 2026 PDF was retrieved but did not yield legible verbatim text to this desk.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-9e53dd6f17b42ca4",
      "title": "Rivera, 'Air quality warnings and temporary driving bans: Evidence from air pollution, car trips, and mass-transit ridership in Santiago', Journal of Environmental Economics and Management 108, 2021 (peer-reviewed)",
      "url": "https://ideas.repec.org/a/eee/jeeman/v108y2021ics0095069621000371.html",
      "publisher": {
       "name": null,
       "domain": "ideas.repec.org",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-3a65f784f7953c6b"
      ],
      "temporal": {
       "publishedAt": "2013-10-14",
       "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": "Abstract fetched verbatim and the sole source of every figure in the impact field: 'these temporary bans reduce car trips by 6-9% during peak hours, and by 7-8% during off-peak hours. This is consistent with air pollution reductions during peak hours, and with increases in the use of Santiago's mass-transit systems during hours the systems run with excess capacity.' Also the independent confirmation of the trigger layer, since the identification strategy is 'a fuzzy regression discontinuity design that uses the thresholds in the air quality index used to announce these warnings as instruments for their announcement.'",
       "exact": false
      },
      "preservation": {
       "archiveUrl": "https://web.archive.org/web/20250430133445/https://ideas.repec.org/a/eee/jeeman/v108y2021ics0095069621000371.html",
       "archivedAt": "2025-04-30",
       "contentHash": null,
       "status": "archive-linked"
      }
     },
     {
      "id": "src-317c1a1978c4206c",
      "title": "Barahona, Gallego and Montero, 'Vintage-Specific Driving Restrictions', Review of Economic Studies 87(4), 2020, pp. 1646-1682 (peer-reviewed)",
      "url": "https://econpapers.repec.org/article/ouprestud/v_3a87_3ay_3a2020_3ai_3a4_3ap_3a1646-1682..htm",
      "publisher": {
       "name": null,
       "domain": "econpapers.repec.org",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2025-07-07",
       "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": "Abstract fetched. Dates the vintage-specific design to Santiago's 1992 programme and calls it the earliest to use vintage-specific restrictions, which is the basis for this entry's yearStart. Argues that uniform restrictions encourage drivers to buy additional, more-polluting vehicles, while vintage-specific ones can 'yield important welfare gains by moving the fleet composition toward cleaner cars' and should work through which car is driven rather than how much it is driven. Cited for design and dating; it is a modelling paper and carries no measured air-quality result here.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-d124edf6a61ee694",
      "title": "Troncoso, de Grange and Cifuentes, 'Effects of environmental alerts and pre-emergencies on pollutant concentrations in Santiago, Chile', Atmospheric Environment 61, 2012, pp. 550-557 (peer-reviewed)",
      "url": "https://www.sciencedirect.com/science/article/abs/pii/S1352231012007637",
      "publisher": {
       "name": null,
       "domain": "sciencedirect.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-26",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Listed because it is the standard evaluation of Santiago's episode restrictions against measured concentrations from the monitoring network. Fetch returned HTTP 403 from this desk on 2026-07-26 and the abstract could not be read in full, so no figure from it is used anywhere in this entry.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-f544e9ee238ef3ba",
      "title": "La Tercera — 'Transportes proyecta que ley CATI entrara en vigencia durante 2026' (press)",
      "url": "https://www.latercera.com/nacional/noticia/transportes-proyecta-que-ley-cati-entrara-en-vigencia-durante-2026/",
      "publisher": {
       "name": null,
       "domain": "latercera.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2025-08-24",
       "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": "Fetched. Confirms the automated enforcement law is not yet in force, that the transport minister expects it during 2026, and that the four infraction types it will automate include restriccion vehicular alongside red lights, speeding and bus-only lanes. This is the source for the entry declining to claim any camera enforcement today, against several Chilean commercial blogs that assert a 400-point plate-reading network is already issuing restriccion tickets.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-cb633e26d2ea29ce",
      "title": "BioBioChile — 'Este lunes inicia la restriccion vehicular en Santiago' (press)",
      "url": "https://www.biobiochile.cl/noticias/servicios/toma-nota/2026/05/03/este-lunes-inicia-la-restriccion-vehicular-en-santiago-revisa-el-calendario-de-digitos-aqui.shtml",
      "publisher": {
       "name": null,
       "domain": "biobiochile.cl",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2011-09-01",
       "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": "Fetched. Independent corroboration of the operating rules while the ministry page was down: 4 May to 31 August, Monday to Friday except holidays 07:30 to 21:00, provincia de Santiago plus San Bernardo and Puente Alto; catalytic cars registered before 1 September 2011 and motorcycles before 2010 on two digits a day, non-seal vehicles on four with 'prohibicion absoluta para circular' inside the Americo Vespucio ring; fine of 1 to 1.5 UTM; 'La medida sera fiscalizada por Carabineros, en conjunto con la Unidad de Fiscalizacion del Ministerio de Transportes.'",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 1,
     "claimsMapped": 1,
     "sourcesTotal": 8,
     "sourcesUsedByClaims": 1,
     "sourcesWithPublicationDate": 5,
     "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."
    ]
   }
  }
 ]
}