Grand Paris Low-Emission Zone (ZFE-m)
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
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✎ Updated 26 Aug 2026 13 claims added. What changed →
A low-emission zone covering the Grand Paris metropolis inside the A86 ring road, using France's Crit'Air windscreen stickers to classify vehicles by emissions. It rolled out in phases from July 2019 (banning Crit'Air 5 and unclassified vehicles), extending to Crit'Air 4 in 2021 and Crit'Air 3 in January 2025. Automated camera enforcement has been repeatedly postponed — it was shelved sine die at the end of 2021 for want of a working camera system, and the sanction-free 'pedagogical' period now runs to December 2026 — and in May 2025 the National Assembly voted (not yet enacted) to scrap France's low-emission zones.
what does this mean?
The strongest source is an independent non-academic evaluation: an audit office, a government or EU review, or an NGO. It grades who did the looking — not how well the project went. All four grades →📊 Impact
Airparif's a posteriori evaluation separates the zone from ordinary fleet turnover. Road-traffic NOx emissions inside the perimeter fell 42% between 2017 and 2023 with the first two steps in force, against 36% modelled without them — six percentage points attributable to the ZFE-m, and fourteen points for private cars taken alone. For PM10 the attributable gain is two points, because 82% of road-traffic PM10 comes off brakes, tyres and the road surface rather than the exhaust the stickers grade; for PM2.5 no share was attributed at all, the trend not being statistically significant. Airparif modelled only the composition of the fleet: possible effects of the zone on traffic volume were not considered. Across Île-de-France 5,000 people were still exposed to illegal NO2 levels in 2023, against 40,000 in 2022.
🎓 Lesson
A windscreen sticker grades the exhaust pipe, so it buys what the exhaust pipe causes and little else: six points of NOx against two of PM10, because four fifths of the particles a car sheds come off its brakes, tyres and the road. And the half of the scheme that would make it bite has never arrived — the cameras were shelved at the end of 2021 for want of a working system, and the sanction-free period now runs to December 2026, seven years after the first restriction took effect. A zone that cannot fine anyone is a fleet-renewal subsidy with a map attached.
Sources
📅 How old is the evidence?
Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2019. 3 of 4 sources carry a publication date, from 28 December 2021 to 26 December 2025.
When the sources were published
- L'Argus · pressL'Argus — Report de la verbalisation des véhicules bannis · updated 29 October 2022
- Airparif · oversight bodyAirparif — Évaluation a posteriori de la ZFE-m du Grand Paris (May 2024)
- Caradisiac · pressCaradisiac — Contrôles ZFE reportés en 2026 (2025)
What happened to this record
- Sources last read
- Entered the record
- 13 claims added
Show your work What this page rests on and what it can’t tell you · all 13 claims with their sources · the forensic record
Evidence Passport · public beta 13 addressable claims, 4 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 13
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.
clm-15013d2b934a8e27
descriptive
using France's Crit'Air windscreen stickers to classify vehicles by emissions
Sources carrying this claim
clm-22e14b4b3ca67ad9
quantitative
It rolled out in phases from July 2019 (banning Crit'Air 5 and unclassified vehicles), extending to Crit'Air 4 in 2021 and Crit'Air 3 in January 2025
Sources carrying this claim
clm-e72a1e5f01f6d63f
quantitative
it was shelved sine die at the end of 2021 for want of a working camera system
Sources carrying this claim
clm-61c15c2df1a624ab
quantitative
the sanction-free 'pedagogical' period now runs to December 2026
Sources carrying this claim
clm-dfc39094a9b715ae
quantitative
in May 2025 the National Assembly voted (not yet enacted) to scrap France's low-emission zones
Sources carrying this claim
clm-41a60a69a53c93fe
quantitative
Road-traffic NOx emissions inside the perimeter fell 42% between 2017 and 2023 with the first two steps in force, against 36% modelled without them — six percentage points attributable to the ZFE-m
Sources carrying this claim
clm-6148eab112f49aa5
descriptive
and fourteen points for private cars taken alone
Sources carrying this claim
clm-676e97e2ba84e474
quantitative
For PM10 the attributable gain is two points, because 82% of road-traffic PM10 comes off brakes, tyres and the road surface rather than the exhaust the stickers grade
Sources carrying this claim
clm-97d7e19fe27db3d1
quantitative
for PM2.5 no share was attributed at all, the trend not being statistically significant
Sources carrying this claim
clm-c864c1eab91e8ece
descriptive
possible effects of the zone on traffic volume were not considered
Sources carrying this claim
clm-9ee9f18766841e7c
quantitative
Across Île-de-France 5,000 people were still exposed to illegal NO2 levels in 2023, against 40,000 in 2022
Sources carrying this claim
clm-dfcc32d1cd5107be
quantitative
six points of NOx against two of PM10, because four fifths of the particles a car sheds come off its brakes, tyres and the road
Sources carrying this claim
clm-9454db78c9a5b797
quantitative
the cameras were shelved at the end of 2021 for want of a working system
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
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.
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 2026-08-27T14:00:00Z. 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 2026-08-26T23:41:56Z on 2026-08-27; evidence: first appears in commit ddeb6bde77, committed 2026-08-26T23:41:56Z.
sha256:7cfa2a73c1e66db43b7c0d1438211c15d9b7f27fd022ee5385c7716060f3f168
- 13
- of 13 claims mapped
- 4
- source dossiers
- 2
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- Métropole du Grand Paris
- 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
4 source dossiers
Métropole du Grand Paris — La Zone à Faibles Émissions métropolitaine
- Stable source ID
src-8878776764ec5547- Publisher
- Name not classified · metropolegrandparis.fr
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-25
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Operator/authority: perimeter inside the A86, Crit'Air phase-in schedule (5/4/3), operating hours. The page carries no publication date.
- Claims linked
Airparif — Évaluation a posteriori de la ZFE-m du Grand Paris (May 2024)
- Stable source ID
src-0269a386af2bb624- Publisher
- Name not classified · airparif.fr
- Type / language
- pdf · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-25
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Independent monitoring association's a posteriori evaluation of the Crit'Air 4 step: NOx emissions down 42% 2017-2023 with the zone against 36% without (six points attributable), fourteen points for private cars, two points for PM10, no attribution for PM2.5; effects on traffic volume not modelled.
Caradisiac — Contrôles ZFE reportés en 2026 (2025)
- Stable source ID
src-a89e8aa03614721b- Publisher
- Name not classified · caradisiac.com
- Type / language
- web-page · language not classified
- Published
- 2025-12-26
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-25
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Enforcement delay: automated sanctions postponed again, pedagogical no-fine period extended to December 2026; May-2025 National Assembly vote to abolish ZFEs.
L'Argus — Report de la verbalisation des véhicules bannis
- Stable source ID
src-ed1c1062f6bba0fd- Publisher
- Name not classified · largus.fr
- Type / language
- web-page · language not classified
- Published
- 2021-12-28
- Updated
- 2022-10-29
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-25
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Published 28 Dec 2021, updated 29 Oct 2022: vidéoverbalisation planned for the end of 2021 was postponed sine die because no camera system was operational; physical checks continue.
- 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.
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📎 Cite this project
1001 Smart Cities (2026). “Grand Paris Low-Emission Zone (ZFE-m)” — Paris, France. The Smart City Atlas. https://1001smartcities.org/projects/paris-grand-paris-zfe/ (last verified 2026-07-25). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.