NatSchG

Section §21 regulates lighting systems, advertising systems, and sky spotlights with a focus on protecting insect fauna and preventing light pollution in outdoor areas. Key provisions include restrictions on illuminating building facades during specific hours, requirements for insect-friendly lighting on public streets, paths, and squares, and a ban on outdoor advertising systems. Exceptions are granted for specific cases, such as advertising at events, signposts, and certain agricultural advertising systems, subject to approval from the nature conservation authority. The highest nature conservation authority is empowered to establish detailed regulations regarding the impact of outdoor lighting systems on wildlife and the permissibility of illuminated advertising systems in outdoor areas.