IES LP-11-20

This Lighting Practice (LP) document outlines the environmental considerations of exterior lighting, especially as related to glare, sky glow, light trespass and the impact of electric light at night on flora and fauna. In addition, this LP provides information on how to assign lighting zones, and how to use the Joint IDAIES Model Lighting Ordinance (MLO) with User's Guide, as a basis for an exterior lighting ordinance. Finally, this LP discusses community-based design and makes specific recommendations for lighting outdoor areas.