Valle d'Aosta Regional Law 17/98

The objectives of this law include: a) limiting light pollution within the regional territory; b) safeguarding nocturnal fauna and migratory routes of avifauna from the effects of light pollution; c) protecting both professional and non-professional astronomical observatories, along with their surroundings, from the impacts of light pollution. According to this legislation, any form of artificial light irradiation outside its designated functional areas, especially towards the celestial vault, is deemed light pollution. The law specifies exemptions for certain lighting sources, which fall outside the scope of the regulation.