{
 "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": "wiesbaden-digi-v",
  "title": "DIGI-V Intelligent Traffic Control",
  "canonicalUrl": "https://1001smartcities.org/projects/wiesbaden-digi-v/"
 },
 "currentRevisionId": "2026-08-22-evidence-baseline",
 "revisions": [
  {
   "id": "2026-08-22-evidence-baseline",
   "createdAt": "2026-08-22T14:00:00Z",
   "effectiveAt": "2026-07-15",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 8 claims and 3 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": "sha256:61266a5f1fb7ec4ccc06443c67ab6bb8fb062144cc069bee7cdc9dc86fe4ccf7",
   "snapshot": {
    "asOf": "2026-07-15",
    "projectFingerprint": "sha256:15c53b004a620f345c65753c3cc1a4ab9471737a94955eb4c1f65a5aa0f3bb6a",
    "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": 2018,
      "ended": null
     }
    },
    "governance": {
     "operator": "Landeshauptstadt Wiesbaden",
     "actorTypes": [
      "city-government"
     ],
     "fundingModel": "public",
     "fundingDescription": "German federal (BMVI) + city",
     "cost": "≈€30M (€15M federal)",
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-01e440f37a5cc446",
      "field": "snippet",
      "text": "traffic lights on Wiesbaden's main road network were fitted with new control and sensor technology",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-83ec696e306cfaa6"
      ],
      "supportNote": "The city's official DIGI-V page describes the project as the 'Digitalisierung und intelligente Vernetzung aller Ampelanlagen im Hauptstraßennetz Wiesbadens' — the digitalisation and intelligent networking of all signal systems in Wiesbaden's main road network — matching the claim that signals on the main road network were fitted with new control/sensor technology.",
      "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-9d49c1a08a6d4e66",
      "field": "snippet",
      "text": "feeding an adaptive control centre that adjusts signals in real time",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-83ec696e306cfaa6"
      ],
      "supportNote": "The city page states: 'Alle gesammelten Daten laufen zentral zusammen und werden in Echtzeit analysiert. Dadurch können die Ampelschaltungen flexibel an die aktuelle Verkehrssituation angepasst werden.' (All collected data come together centrally and are analysed in real time, allowing signal timings to be flexibly adapted to the current traffic situation.)",
      "caveat": "The source describes centralised, real-time data processing that feeds signal adjustments; it does not itself use the term 'control centre'.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-6d0ea03355f59419",
      "field": "snippet",
      "text": "to ease congestion and cut NO2",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-83ec696e306cfaa6"
      ],
      "supportNote": "The city's page states the project's aim as 'Weniger Staus, saubere Luft und mehr Lebensqualität durch intelligente Ampeln, Echtzeitinfos und innovative Technik' (less congestion, cleaner air and more quality of life through smart signals, real-time information and innovative technology), and describes 'Pförtnerampeln' (gatekeeper signals) at strategic entrances to the city centre that 'sorgen dafür, dass der Verkehrsfluss gezielt reguliert wird, sodass Überlastungen und Staus deutlich reduziert werden' (ensure traffic flow is specifically regulated so that overloads and congestion are significantly reduced).",
      "caveat": "This is the operator's stated goal, not an independently measured, achieved reduction. The page frames elevated NOx levels as historical background ('Lange Zeit hatte Wiesbaden regelmäßig Probleme mit erhöhten Stickoxid-Werten') and lists NO2 monitoring as a system function, but no listed source reports a measured before/after change in NO2 or congestion attributable to DIGI-V.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-460efa3de31679c9",
      "field": "snippet",
      "text": "One of Germany's most extensive urban traffic digitalisations",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-83ec696e306cfaa6",
       "src-e3a1a9fed339c496"
      ],
      "supportNote": "Both the operator and its delivery partner describe the project in superlative terms, though not with this exact wording. The city's page states: 'Als erste Stadt Deutschlands hat Wiesbaden seine Verkehrsinfrastruktur so umfangreich digitalisiert' (As the first city in Germany, Wiesbaden has digitalised its traffic infrastructure this comprehensively). Siemens Mobility's press release calls it 'unique in Germany so far'.",
      "caveat": "This is a self-description by the operator and its supplier, not an independently verified comparison against other German cities' traffic-digitalisation projects. Neither source actually uses the phrase 'most extensive', and no third-party ranking or study is cited to substantiate the comparison.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-434036ae58b55b8a",
      "field": "snippet",
      "text": "commissioned in 2021",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-0d432cddcc2c5d1f"
      ],
      "supportNote": "The federal funder's page lists the DIGI-V project duration as '01.05.2018 – 31.08.2021', consistent with the project being commissioned/completed in 2021.",
      "caveat": "The source gives a funding period ending 31 August 2021, not an explicit commissioning or go-live date; no listed source gives an exact operational start date.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-f1c42b905e098ba2",
      "field": "impact",
      "text": "digitalised in a ~EUR30M project",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-0d432cddcc2c5d1f"
      ],
      "supportNote": "The federal funder's page lists the DIGI-V project volume as '32.950.739 €' (€32,950,739).",
      "caveat": "The source's precise figure (€32.95M) is roughly 10% higher than the entry's rounded '~EUR30M' — a closer rounding would be about €33M.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-b268d1c2fc5eed9a",
      "field": "impact",
      "text": "(EUR15M federal)",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-0d432cddcc2c5d1f"
      ],
      "supportNote": "The federal funder's page states the federal funding share for DIGI-V as 'davon 16.475.369 € Förderanteil durch BMV' (of which €16,475,369 is the BMV funding share).",
      "caveat": "The precise federal contribution (€16.475M) is roughly 10% higher than the entry's rounded 'EUR15M' — a closer rounding would be about €16.5M.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-d302417a41f236fd",
      "field": "impact",
      "text": "one of Germany's most extensive urban traffic digitalisations",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-83ec696e306cfaa6",
       "src-e3a1a9fed339c496"
      ],
      "supportNote": "As in the snippet, the operator and its delivery partner both describe the project as exceptional. The city's page states: 'Als erste Stadt Deutschlands hat Wiesbaden seine Verkehrsinfrastruktur so umfangreich digitalisiert.' Siemens Mobility's press release calls it 'unique in Germany so far'.",
      "caveat": "This is a self-description by the operator and its supplier, not an independently verified comparison against other German cities' traffic-digitalisation projects. Neither source uses the phrase 'most extensive', and no third-party ranking or study is cited.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
    "sources": [
     {
      "id": "src-83ec696e306cfaa6",
      "title": "Landeshauptstadt Wiesbaden (authority)",
      "url": "https://www.wiesbaden.de/leben-in-wiesbaden/mobilitaet/verkehrsentwicklung/digi-v",
      "publisher": {
       "name": null,
       "domain": "wiesbaden.de",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-01e440f37a5cc446",
       "clm-9d49c1a08a6d4e66",
       "clm-6d0ea03355f59419",
       "clm-460efa3de31679c9",
       "clm-d302417a41f236fd"
      ],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-15",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Official project page by the city/authority behind DIGI-V.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-e3a1a9fed339c496",
      "title": "Siemens Mobility (partner)",
      "url": "https://press.siemens.com/global/en/pressrelease/siemens-mobility-digitizes-traffic-wiesbaden",
      "publisher": {
       "name": null,
       "domain": "press.siemens.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-460efa3de31679c9",
       "clm-d302417a41f236fd"
      ],
      "temporal": {
       "publishedAt": "2018-12-14",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-15",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Delivery partner (traffic unit now Yunex Traffic) press release on the contract.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-0d432cddcc2c5d1f",
      "title": "Bundesministerium für Verkehr (funder)",
      "url": "https://www.bmv.de/SharedDocs/DE/Artikel/G/DKV/dkv-wiesbaden-digitalisierung.html",
      "publisher": {
       "name": null,
       "domain": "bmv.de",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-434036ae58b55b8a",
       "clm-f1c42b905e098ba2",
       "clm-b268d1c2fc5eed9a"
      ],
      "temporal": {
       "publishedAt": "2020-11-17",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-15",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Federal funder page confirming 227 signals, 400+ devices, ~EUR30M volume / EUR15M federal grant.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 8,
     "claimsMapped": 8,
     "sourcesTotal": 3,
     "sourcesUsedByClaims": 3,
     "sourcesWithPublicationDate": 2,
     "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."
    ]
   }
  }
 ]
}