The law defines light pollution as “every form of illumination by artificial light that is dispersed outside the areas it is dedicated to, particularly if directed above the level of the horizon. ”
Seadus defineerib valgussaastet kui „igasugust tehisvalgust, mis on hajunud kaugemale valgustust vajavast alast, eriti kui see on suunatud horisondist kõrgemale ”.