CC BY
Attribution only. Commercial reuse permitted, derivatives permitted — the workable default, and the most common licence in the atlas.
How this list is decided. Membership is not a field an editor set: it is every published entry whose own text names CC BY, matched at build time, with the sentence printed under each row so you can judge the match yourself. 46 entries in 33 cities.
✔ Every published entry is checked against the public sources it cites before publication.
Where it appears in the atlas
Ankara's text names CC BY 4.0 — the same unmodified international licence Montreal uses — and permits commercial reuse with attribution.
Indexed catalogue facets show datasets filed under 'License not specified', and no CC BY or equivalent deed was found in any source.
Launched in September 2011, daten.berlin.de was one of Germany's earliest state/municipal open-data portals — starting with roughly two dozen datasets and growing to thousands, published under open licences such as CC BY and CC0.
The catalogue mostly keeps it — 1,181 CC BY 4.0, 419 CC BY-SA 4.0, 103 CC0 — but 96 datasets sit under non-commercial licences that rule excludes, 3 are tagged "Other (Not Open)", 52 say "License Not Specified" and 12 carry no licence field at all.
No Registro Bici dataset exists on the city portal; the Secretaría Distrital de Movilidad's published bicycle datasets (counting sensors, cicloparqueaderos, shared-bike stations) carry CC BY 4.0.
Open-data check, fetched 26 July 2026: 34 datasets, licensed CC BY 4.0 (20), CC BY-SA 4.0 (12) and CC BY-NC-SA 4.0 (2) — the first non-commercial licence encountered in this atlas's licence series.
The policy names CC BY 4.0 as the default licence; the portal ships PDDL public-domain dedications instead.
A CKAN catalogue query on 26 July 2026 returned 451 datasets and not one unlicensed: 386 under an Argentine port of Creative Commons Attribution 2.5, 60 under an unversioned CC BY, and 5 under the CC BY 4.0 that the city's own publication guide says it always applies.
The city publishes every trip record from 2010 onward on its open-data portal under CC BY 2.5 Argentina, while the operator's live GBFS feed carries no licence, no terms and no operator field at all.
Twelve cooperatives now hold assigned collection zones and run the green centres that sort the material, and the city publishes both as CC-BY open geodata — every zone and every plant named with the cooperative that works it — alongside monthly recovered tonnage by plant type.
Ministry of Transport publishes daily SUBE transaction counts under CC BY 4.0, 2020–2026.
The city now lists 216 datasets — traffic counts, street trees, urban fixtures, 3D city models — mostly CC BY 4.0 licensed, managed by Copenhagen Solutions Lab.
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Sonitus Systems manufactures the hardware and maintains the network; the readings have been public online since at least 2016, on a joint air-and-noise portal since 2020, and through an open API under a CC BY 4.0 licence.
In February 2023 the council published the street-by-street maps on Google's Environmental Insights Explorer and the raw data under CC BY 4.0.
The NTA publishes its timetables as GTFS under a CC BY 4.0 licence, and since August 2020 the live predictions as a GTFS-Realtime feed that needs a registered key; the 2023 upgrade added Luas and Iarnród Éireann services and live bus positions.
The council's open register of public bin locations (CC BY), updated monthly.
Dublin City Council's dataset on the Smart Dublin open-data portal: a GBFS API with information on vehicles, stations and pricing, where 'The current location of the vehicles is updated every minute', plus historical station files, published monthly into 2026, under a CC BY licence.
Dublinked names one on all 929 datasets, but the two tokens that carry 97% of the catalogue each drop half of what a reuser needs: 488 records point at a version-agnostic page listing CC BY 1.0 through 4.0, and 411 name CC-BY-4.0 with no deed behind it.
Helsinki 3D+ is the city's open 3D model of every building and the ground surface, combining a semantic CityGML information model with a high-resolution reality mesh, released as free open data in 2016 and licensed under CC BY 4.0.
Text of the İBB Open Data Licence: a worldwide, royalty-free, perpetual, non-exclusive licence to copy, publish, adapt and use the information commercially and non-commercially, on condition of attribution; without a provider-specified statement, users credit the data as licensed under CC BY 4.0.
It now publishes around 550 machine-readable datasets spanning mobility, environment, governance, budget and social services, released under İBB's own open licence (compatible with CC BY 4.0) with developer API access.
No CC BY or equivalent deed is offered.
Lisbon's Lisboa Aberta portal has published municipal datasets since February 2016, growing past 360 by 2023 — parish boundaries, playgrounds, environmental sensor readings, procurement records — each licensed CC0 or CC BY 4.0.
One portal is not one licence: by October 2026, 643 of the catalogue's 674 datasets carried CC BY 4.0, while the city's own companies — the EMT bus operator, Madrid Destino and the public libraries — kept their own reuse conditions, so the live bus feed comes under the EMT's terms rather than the licence that covers…
226 of 239 datasets carry CC BY 4.0; 13, including the flagship pedestrian dataset, list no licence.
confirms City of Melbourne as publisher and CC BY 4.0 licensing
The city's data policy states data are published 'para su libre uso y sin discriminacion alguna en su acceso' and 'bajo terminos que permitan reutilizarlos y redistribuirlos' ('for free use and without discrimination in access', 'under terms permitting reuse and redistribution'); no named licence such as CC BY is st…
The working GIS hub quietly ships a CC BY 4.0 deed in its metadata, required by no ordinance.
Data is released under the Creative Commons Attribution licence (CC BY 3.0 IT), with a CKAN-based API for programmatic access, and the catalogue is federated to the national dati.gov.it registry.
Every dataset names a licence, as in Montreal and Zurich; but the licence it names is overwhelmingly ODbL, a share-alike database licence that obliges reusers to publish enriched derivatives back under the same terms — an open licence with a string attached, where Montreal chose plain CC BY and Zurich mostly CC0.
All 337 datasets on Munich's open-data portal carry a license: 325 under Germany's attribution-only Datenlizenz Deutschland, the rest CC-BY, CC0 or other-open.
Of 100 dataset records sampled from the city's Hub index, 76 carried CC BY 4.0 and 24 the value "custom"; a separate partial sample turned up records carrying no licence field at all.
Rio's planning institute, the IPP, keeps a municipal register of favelas — SABREN — and publishes its boundary layers openly on data.rio under CC BY 4.0; the 2022 reference layer holds 1,072 polygons drawn by photointerpretation of aerial imagery.
Built on satellite vehicle tracking (AVM), the feeds cover ATAC, Roma TPL, Trenitalia and other operators under a CC-BY licence.
This is the most permissive position of any city in the atlas — more permissive than Vienna's CC BY 4.0, and unlike New York (statutory ban on licence conditions but no deed shipped), Chicago (no deed, plus a notice condition on reusers), Jakarta (asserted public-domain status, no deed), Shanghai and Bangkok (no lic…
Counted the same day from the CKAN API of the national portal datos.gob.cl: 3,149 datasets from 231 publishing organisations, of which 1,313 are Creative Commons Non-Commercial, 922 CC BY, 421 CC0, 352 ODC-PDDL, 52 ODC-BY, 50 ODbL and 23 explicitly unspecified.
There is no municipal licence: each publishing body picks from CKAN's stock dropdown, so the catalogue splits across ten licences, led by CC0 (277 datasets) and CC BY (148).
Stockholm illustrates the gap between 'freely reusable' language and a formal open license: the Traffic Office's own portal calls its data 'license-free', but no CC0/CC-BY/PDDL dedication could be confirmed for the city's open-data effort as a whole, and the main catalog's JavaScript-only interface makes even a basi…
Transport for NSW's Open Data Hub has published live GTFS-realtime feeds — vehicle positions, trip updates and alerts — for Sydney's trains, buses, ferries and light rail since 2016, with feeds refreshing about every 15 seconds under a CC BY 4.0 licence.
Every dataset carries Taiwan's Government Open Data License, compatible with CC BY 4.0.
Its free, browser-based 3D Viewer, built on the open-source TerriaJS framework, layers live data such as Toei bus positions and river levels over 3D city models of Tokyo's wards, Tama area and islands, and on 31 October 2024 the city released high-precision aerial point-cloud data for the 23 wards as open data under…
The city now publishes several hundred datasets — geodata, transit and traffic feeds, statistics, environmental and administrative records — as a rule under CC BY 4.0, on the federal platform data.gv.at.
The national catalogue labels the city's transit datasets CC BY 4.0, gives 'Other (Public Domain)' as the licence description in the same record, and points to the city's own terms of use; the city told a European programme it shares data without legal restrictions; and two independent reusers, a 2018 university the…
The District's terms of use dedicate its data to the public domain under CC0 1.0 — but the catalogue's own metadata mostly ships CC BY 4.0, and some datasets carry 'custom', 'null' or no licence at all.
654 of 654 datasets licensed CC BY, with zero unlicensed records, counted directly through the portal's package_search API in August 2026.
Today data.stadt-zuerich.ch lists 937 datasets, and every one carries a licence: 908 are CC0 public-domain dedications, the rest CC BY or CC BY-SA.
Others in this group
The whole layer
Every standard, protocol and licence the atlas names, with the open-data licence ladder in one table: Standards & licences.