Sources and licences

Checked 3 Nov 2026

Every price, date and rule on this site links to the official source it was checked against, with the date of that check. The maps are drawn from open data, credited under each map and listed here.

Datasets behind the maps

Umweltzonen in Deutschland (Datensatz), Umweltbundesamt. Datenlizenz Deutschland – Namensnennung – Version 2.0.
Zone boundaries: © Umweltbundesamt, data from 24 June 2025, Datenlizenz Deutschland – Namensnennung – Version 2.0. Simplified and limited to the zones UBA lists as in force. Checked 3 Nov 2026
Umweltzonen, Durchfahrtsbeschränkungen und Luftreinhaltepläne (list and map service), Umweltbundesamt. Facts cited from the source.
Zone names, status and stage dates: Umweltbundesamt list, last changed 26 August 2026. Checked 3 Nov 2026
Natural Earth 1:50m Admin 0 – Countries, Natural Earth. Public domain.
Country outline: Natural Earth (public domain). Checked 3 Nov 2026
ZTL diurna and ZTL notturna, Comune di Firenze. Creative Commons Attribution 4.0 International.
ZTL sectors: © Comune di Firenze, datasets ZTL diurna and ZTL notturna (data updated 23 March 2026), CC BY 4.0. Simplified. Checked 3 Nov 2026
Dati in tempo reale sui posti liberi nei parcheggi di Firenze, Comune di Firenze / Firenze Parcheggi. Creative Commons Attribution 4.0 International.
Car park locations: © Comune di Firenze / Firenze Parcheggi, CC BY 4.0. Checked 3 Nov 2026
Base nationale consolidée des zones à faibles émissions (BNZFE) aires, Point d'Accès National transport.data.gouv.fr. Open Database License 1.0.
ZFE perimeters: Base nationale consolidée des zones à faibles émissions (BNZFE), Point d'Accès National transport.data.gouv.fr, Open Database License 1.0. Simplified. Checked 3 Nov 2026
Emissiezones (DATEX II urban vehicle access regulations), NDW, the Dutch national road traffic data portal. Creative Commons Zero 1.0.
Milieuzone boundaries: NDW emissiezones feed (CC0 1.0). Simplified; zero-emission zones left out. Checked 3 Nov 2026
OpenStreetMap, OpenStreetMap contributors. Open Database License 1.0.
Zone boundaries: © OpenStreetMap contributors, Open Database License 1.0. Simplified; the authorities' own maps remain authoritative. Checked 3 Nov 2026

Licences

Facts cited from the source: Prices, dates and rules are stated in our own words with a link to the source; any wording reproduced is a short quotation of the source.
Official text outside copyright: Statutes, ordinances and other official acts are not protected by copyright (Germany: § 5 UrhG; Italy: art. 5 L. 633/1941; Switzerland: art. 5 URG; Czechia: § 3 zákon 121/2000 Sb.). We quote them with a link to the official publication.
Creative Commons Attribution 4.0 International: Reused with attribution. Changes are noted where the data is shown.
Datenlizenz Deutschland – Namensnennung – Version 2.0: Reused with attribution to the data provider and a link to the dataset. Changes are noted where the data is shown.
Public domain: No restrictions. Credited anyway.
Open Database License 1.0: Reused with attribution and kept under the same licence; a derived database published from it stays ODbL. Changes are noted where the data is shown.
Creative Commons Zero 1.0: Dedicated to the public domain; credited anyway.