{
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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": "dresden-vamos-traffic-management",
  "title": "VAMOS Traffic Management System and Parking Guidance",
  "canonicalUrl": "https://1001smartcities.org/projects/dresden-vamos-traffic-management/"
 },
 "currentRevisionId": "2026-11-06-baseline",
 "revisions": [
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   "id": "2026-11-06-baseline",
   "createdAt": "2026-11-06T06:45:52Z",
   "effectiveAt": "2026-11-06",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 10 claims and 7 source dossiers.",
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   },
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    "date": null,
    "note": "Awaiting operator and domain-expert review; publication of this revision implies neither."
   },
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    {
     "operation": "add",
     "path": "/evidencePassport",
     "summary": "Added claim-level evidence mapping and source dossiers."
    },
    {
     "operation": "add",
     "path": "/revisionHistory",
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    "assurance": {
     "status": "unreviewed",
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     "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.",
     "machineChecks": [
      "schema",
      "publication-diff-contract",
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      "claim-text-drift",
      "source-reference-resolution",
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     ]
    },
    "projectState": {
     "status": "live",
     "outcome": "ongoing",
     "evidenceGrade": "official",
     "timeline": {
      "started": 2004,
      "ended": null
     }
    },
    "governance": {
     "operator": "City of Dresden (Straßen- und Tiefbauamt), with TU Dresden's chair of traffic process automation developing and maintaining the system",
     "actorTypes": [
      "city-government",
      "research"
     ],
     "fundingModel": "public",
     "fundingDescription": "Built up through federal and Saxon research and funding projects; maintained and extended by TU Dresden on the city's behalf.",
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
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      "field": "snippet",
      "text": "built up step by step after a 2003 city council resolution",
      "statementKind": "quantitative",
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      "mappingStatus": "mapped",
      "sourceRefs": [
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      "supportNote": "The university's project page says VAMOS2 was built up step by step as the city's traffic management system after a city council resolution in 2003.",
      "caveat": null,
      "interpretation": {
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       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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     {
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      "field": "snippet",
      "text": "developed and maintained for the city by TU Dresden, in a project running since July 2004",
      "statementKind": "quantitative",
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      "supportNote": "The page lists the project term as running from July 2004 with the City of Dresden as partner, and says the system is maintained and extended on the city's behalf.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
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     {
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      "field": "snippet",
      "text": "more than a thousand traffic detectors",
      "statementKind": "quantitative",
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      "mappingStatus": "mapped",
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      ],
      "supportNote": "The state portal says VAMOS is based on more than a thousand traffic detectors in the region; the university's lab page speaks of data series for more than 1,000 detectors.",
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      "interpretation": {
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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     {
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      "field": "snippet",
      "text": "links the control systems of the city's streets and the motorways",
      "statementKind": "descriptive",
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      "mappingStatus": "mapped",
      "sourceRefs": [
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      "supportNote": "The page says VAMOS2 networks the region's detectors and the various traffic control and guidance systems of the city's road network and the motorways.",
      "caveat": null,
      "interpretation": {
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       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "controls the traffic control systems automatically around the clock",
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      "mappingStatus": "mapped",
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      "supportNote": "The page says VAMOS2 controls the traffic control systems on the basis of the estimated traffic state, in fully automatic operation around the clock.",
      "caveat": "The source does not say which control systems VAMOS switches directly; the signal controllers themselves sit on separate traffic computers.",
      "interpretation": {
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       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "operators can step in from the city's control centre and from a station at the university",
      "statementKind": "descriptive",
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      "supportNote": "The page says operators can intervene manually from an operator station in the city administration's control centre and from one in the VAMOS centre at TU Dresden.",
      "caveat": null,
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "A dynamic parking information and guidance system is part of it.",
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      "mappingStatus": "mapped",
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      "supportNote": "The state portal says a dynamic parking information and guidance system is part of VAMOS.",
      "caveat": null,
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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     {
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      "field": "snippet",
      "text": "In 2017 the university said the city passes on only processed data such as the traffic state, never raw data.",
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      "supportNote": "The developers told the university journal that the city made a policy decision on data sharing: no raw data is passed on, only processed data such as the traffic state, so the city keeps control over route recommendations.",
      "caveat": "A statement from 2017; no later source on the city's data-sharing rule was found.",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "In 2015, volunteers who wanted the car-park figures as data had to scrape them from the city's website.",
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      "supportNote": "The post says the city published free car-park spaces on its website but not in machine-readable form, so the OK Lab team wrote a program that fetches the figures from the city's website and stores them.",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "lesson",
      "text": "in 2017 its own developers said no serious congestion figures can be given for Dresden, because there is no clear definition of a jam in urban traffic",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "id": "src-f9daa1a1b378519f",
      "title": "TU Dresden — VAMOS2: Verkehrsmanagementsystem VAMOS Dresden (project page)",
      "url": "https://tu-dresden.de/bu/verkehr/vis/vlp/forschung/forschungsprojekte/verkehrsmanagementsystem-vamos-dresden",
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       "value": "The TU Dresden chair's standing project page: VAMOS2 was built up step by step as Dresden's traffic management system after a 2003 city council resolution, links regional detectors with the control systems of city streets and motorways, controls the traffic control systems automatically around the clock and is maintained and extended on the city's behalf. Project term listed as from 07/2004.",
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      "title": "TU Dresden — VAMOS Lab",
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       "type": "descriptive-source-note",
       "value": "The university's description of the VAMOS lab: the traffic data centre is the core of the system, and data series for more than 1,000 detectors are kept for research.",
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       "type": "descriptive-source-note",
       "value": "Interview with the TU Dresden traffic telematics professors who develop VAMOS for the city's road and civil engineering office: the city passes on only processed data such as the traffic state, not raw data; because a jam is not clearly defined in urban traffic, no serious figures on congestion times in Dresden can be given; cooperative signal solutions are in regular operation on the north-south link.",
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     {
      "id": "src-84367592abfc816b",
      "title": "Sächsische Staatskanzlei — Smarte Mobilität aus und für Sachsen: VAMOS",
      "url": "https://www.smartes.sachsen.de/smarte-mobilitaet-aus-und-fuer-sachsen-effizientere-verkehrsloesungen-fuer-stadt-und-land-4471.html",
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       "retrievedAt": null,
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      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Saxony's state portal describes VAMOS as developed by TU Dresden with the city's road and civil engineering office, based on more than a thousand detectors, and states that a dynamic parking information and guidance system is part of it.",
       "exact": false
      },
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     {
      "id": "src-410455beb44ae501",
      "title": "Landeshauptstadt Dresden — Freie Parkplätze (live occupancy page)",
      "url": "https://www.dresden.de/apps_ext/ParkplatzApp/",
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       "domain": "dresden.de",
       "classification": "not-classified"
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      "language": "und",
      "role": "background",
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       "updatedAt": "2026-01-20",
       "sourceCheckedAt": null,
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       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "The city's live page listing capacity and free spaces per car park, grouped by area, including park-and-ride sites and coach parking; contact is the civil engineering office's traffic engineering unit.",
       "exact": false
      },
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      "title": "Code for Germany — ParkenDD: Vorausschauendes Parken in Dresden (31 Aug 2015)",
      "url": "https://codefor.de/blog/stadtgeschichte-parkendd-dresden/",
      "publisher": {
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       "domain": "codefor.de",
       "classification": "not-classified"
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      "role": "claim-evidence",
      "claimRefs": [
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      "temporal": {
       "publishedAt": "2015-08-31",
       "updatedAt": null,
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       "recordLastVerifiedAt": "2026-11-06",
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       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Code for Germany's account of the OK Lab Dresden app ParkenDD: the city published free car-park spaces on its website but not in machine-readable form, so the volunteers wrote a program to fetch the figures from the city's website and store them, and built an occupancy forecast on top.",
       "exact": false
      },
      "preservation": {
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       "status": "not-captured"
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     },
     {
      "id": "src-31198070fc4d1618",
      "title": "Landeshauptstadt Dresden — Zweite Evaluierung Verkehrsentwicklungsplan 2025plus (Oct 2023)",
      "url": "https://www.dresden.de/media/pdf/stadtplanung/verkehr/Zweite-Evaluierung-VEP-mit-Anlagen.pdf",
      "publisher": {
       "name": null,
       "domain": "dresden.de",
       "classification": "not-classified"
      },
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      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
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       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-11-06",
       "dossierCreatedAt": "2026-11-06",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "The city's second evaluation of its transport development plan (data as of 2020) lists the expansion of the traffic management centre VAMOS as a standing task and the second expansion stage of VAMOS as built; it reports annual travel-time measurements without attributing them to VAMOS and notes a high scatter in the car values.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
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       "contentHash": null,
       "status": "not-captured"
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    "coverage": {
     "claimsTotal": 10,
     "claimsMapped": 10,
     "sourcesTotal": 7,
     "sourcesUsedByClaims": 5,
     "sourcesWithPublicationDate": 1,
     "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."
    ]
   }
  }
 ]
}