National mapping of night lighting practices

Mapping changes in public lighting practice at the municipal level in France since 2014.&#x20; Using VIIRS night-time satellite data acquired between 2014 and 2024, an algorithm was designed to detect changes in night-time lighting practices in the heart of the night. Each French municipality is assigned one or more classes: * Detection of probable total extinction&#x20; * Detection of probable partial extinction or major renovation of the light park * Abandonment of a policy of extinction * No change in practice detected * Potential extension of the light park * Commune not detectable by satellite ('excluding light task') For each municipality, the dates suspected of change of practice are issued as well as a curve of evolution of the nocturnal radiance seen by satellite between 2014 and 2024. This map was produced as part of the Sérénos project (Road Safety, Nocturnal Lighting and Satellite Observation) for the Delegation for Road Safety. Methodological developments have been consolidated in partnership with DarkSkyLab. \ The data shall be supplied with a technical report (\_technique \_cartographie \_extinctions.pdf) and a webgis shall be made available for viewing: [Dashboard](https://cartagene.cerema.fr/portal/apps/dashboards/e811c1f42ea846a68dedcf94946dc5a3)[](https://framaforms.org/form-de-contribution-a-la-cartographie-nationale-des-extinctions-de-leclairage-public) A form to participate in the continuous improvement of the method is available to users who may encounter an inconsistency in their field experience: [Contribution form to the national mapping of lighting extinctions | Framaforms.org](https://framaforms.org/form-de-contribution-a-la-cartographie-nationale-des-extinctions-de-leclairage-public) Should you have any queries relating to this data, please do not hesitate to contact us: <satellite@cerema.fr>