1001 Smart Cities

Permanent project revision

ZBE Rondes de Barcelona Low Emission Zone

Revision 2026-08-27-p1-quality-uplift · effective 2026-07-18

Current revision. This is the snapshot used by the live entity page.

unreviewed

Full claim mapping over snippet, impact and lesson; sourced impact and lesson added; source dates and attributions corrected from the same reading.

sha256:7070868c1ed327ed2e8c0b4c21506ccd1f8fe118b5001acee0a70dee4a12d170
All revisions → Current entity page →

Change set

  • replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.
  • replace /snapshot/claims — Updated claims to the current sourced project record.
  • replace /snapshot/sources — Updated sources to the current sourced project record.
9
of 9 claims mapped
3
source dossiers
2
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-b7acc1e63aa57dce quantitative
across more than 95 km² covering Barcelona and four neighbouring municipalities, enforced since 2020 by automated number-plate cameras backed by a €200 fine
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The authority page sets out the perimeter and the municipalities; Metrópoli Abierta records the decree 'para restablecer las sanciones de 200 euros a los vehículos que circulen por la ciudad sin el distintivo ambiental de la DGT' and lists Barcelona alongside l'Hospitalet de Llobregat, Sant Adrià del Besòs and parts of Esplugues de Llobregat.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Àrea Metropolitana de Barcelona / Ajuntament de Barcelona — ZBE Rondes de Barcelona (authority)
  2. Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press)
Claim 2 clm-0a6de0a4fc7fc2ce quantitative
On 22 January 2026 the city switched enforcement off to ease travel while the Rodalies commuter railway recovered from a fatal derailment and landslides
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Metrópoli Abierta: 'El pasado 22 de enero, Barcelona desactivó la medida para facilitar los desplazamientos mientras se recuperaba progresivamente el servicio de Rodalies tras el descarrilamiento mortal de un tren en Gelida y los numerosos desprendimientos que se produjeron en distintos puntos de la red ferroviaria.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press)
Claim 3 clm-29abb9864e50eee6 descriptive
using an article of its own low-emission ordinance that allows the zone to be deactivated in justified cases of general interest
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Metrópoli Abierta: 'dando respuesta a la Ordenanza de Bajas Emisiones, que en su artículo 12 abre la puerta a poder desactivar la ZBE en casos de interés general debidamente justificados.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press)
Claim 4 clm-2b28966cc7395f76 quantitative
restored it on 16 March 2026
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Metrópoli Abierta: 'El alcalde Jaume Collboni ha firmado el decreto para reanudar las restricciones en la movilidad a partir del próximo lunes, 16 de marzo.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press)
Claim 5 clm-d6ac795b6ecf94a7 quantitative
associated the zone with a fall of up to 7.6 µg/m³ of NO2 at traffic-monitoring stations between 2020 and 2022 — a reduction of 15.8%
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
ISGlobal: 'En el estudio, la introducción de la ZBE se asoció con una disminución de hasta 7,6 µg/m³ de NO₂ en las estaciones de tráfico, lo que equivale a una reducción del 15,8%.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ISGlobal — press release on peer-reviewed NO2 impact study (research)
Claim 6 clm-e8b6f52a7ebf54bd descriptive
The method builds a simulated version of the area without the zone and controls for pandemic activity changes, international regulation and weather
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
ISGlobal quotes the first author: 'el método estadístico SC-PI, que permite construir una versión simulada de la zona sin la ZBE, para comparar qué habría pasado si la medida no se hubiera aplicado', and states the model controlled for 'los cambios de actividad durante la pandemia, nuevas regulaciones internacionales o la meteorología'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ISGlobal — press release on peer-reviewed NO2 impact study (research)
Claim 7 clm-000e08be596a84cc quantitative
Reductions attributable to the zone in PM10 and PM2.5 were small, around 1 µg/m³, and stopped being significant under some analysis methods, which the authors attribute to much of the particulate load forming in the atmosphere from sources other than the vehicles themselves
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
ISGlobal: 'las reducciones atribuibles a la ZBE en PM 10 y PM 2.5 fueron pequeñas (alrededor de 1 µg/m³), y dejaron de ser significativas con algunos métodos de análisis. Esto podría explicarse porque una parte importante de las partículas en suspensión no se emite directamente por los vehículos, sino que se forma en la atmósfera a partir de gases contaminantes procedentes de distintas fuentes.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ISGlobal — press release on peer-reviewed NO2 impact study (research)
Claim 8 clm-b7cf4b342a905a68 quantitative
the measured fall is nearly 16%; particulates largely form in the air from other sources, and the same method could not find a robust effect on them
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The study's NO2 figure is 15.8%; ISGlobal's own headline calls it 'un descenso de casi un 16%', and reports the particulate effects as small and not robust across methods.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ISGlobal — press release on peer-reviewed NO2 impact study (research)
Claim 9 clm-88c264872deac9a5 quantitative
an article lets the city switch the zone off in a justified case of general interest, and in January 2026 it did, for almost two months, because the commuter railway had stopped working
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Metrópoli Abierta: the sanctions were suspended 'durante casi dos meses' under article 12 of the ordinance, after the Rodalies service collapsed.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press)

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-08-27-p1-quality-uplift effective 2026-07-18 · created 2026-08-26

Awaiting operator and domain-expert review; publication of this revision implies neither.

Erratum on this revision's envelope. The snapshot, its hash and its permanent link are untouched.

  • createdAt previously read 2026-08-27T23:00:00Z. The batching script that produced this revision advanced createdAt into the future to satisfy the strictly-increasing order the validator requires per entity. The value never recorded a real event; the corrected value is the moment the revision provably existed in the repository. Corrected to 2026-08-26T23:52:42Z on 2026-08-27; evidence: first appears in commit a8492f64da, committed 2026-08-26T23:52:42Z.
sha256:7070868c1ed327ed2e8c0b4c21506ccd1f8fe118b5001acee0a70dee4a12d170
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
9
of 9 claims mapped
3
source dossiers
2
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Àrea Metropolitana de Barcelona
Actor types
regional-government
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

3 source dossiers

Àrea Metropolitana de Barcelona / Ajuntament de Barcelona — ZBE Rondes de Barcelona (authority) zbe.barcelona · 1 linked claim

Open original source ↗

Stable source ID
src-5e8935e594457122
Publisher
Name not classified · zbe.barcelona
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-18
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Operator page: coverage area, municipalities, phased vehicle restrictions and operating hours. Carries no publication date; the 2020 date on the record was the zone's launch, not a publication.

Descriptive only — not page/paragraph exact
Claims linked
ISGlobal — press release on peer-reviewed NO2 impact study (research) isglobal.org · 4 linked claims

Open original source ↗

Stable source ID
src-2050256fbbaa4db7
Publisher
Name not classified · isglobal.org
Type / language
web-page · language not classified
Published
2026-03-24
Updated
2026-03-25
Source last checked
No source-level check date
Record last verified
2026-07-18
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Research institute's summary of the Atmospheric Environment: X study, dated 24 March 2026: NO2 down by up to 7.6 µg/m³ (15.8%) at traffic stations between 2020 and 2022 under an SC-PI synthetic-control method; PM10 and PM2.5 reductions of around 1 µg/m³ that lose significance under some methods. First author Vanessa N. dos Santos (ISGlobal/UPF).

Descriptive only — not page/paragraph exact
Claims linked
Metrópoli Abierta (El Español) — 2026 suspension and reactivation coverage (press) metropoliabierta.elespanol.com · 5 linked claims

Open original source ↗

Stable source ID
src-d90d4d07568cc716
Publisher
Name not classified · metropoliabierta.elespanol.com
Type / language
web-page · language not classified
Published
2026-03-15
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-18
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Reports the mayor's decree restoring the zone on Monday 16 March 2026 and the €200 fine, after enforcement was switched off on 22 January 2026 during the Rodalies collapse; cites article 12 of the low-emission ordinance, which allows deactivation in duly justified cases of general interest.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this passport
  • 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.