Outdoor and site lighting

Outdoor lighting

Prior to 2005, Title-24 lighting standards only applied to indoor and outlighting associated with conditioned buildings; that is buildings that are heating or cooled. Now the Standards address lighting in unconditioned building as as well as general site illumination and specific outdoor lighting applications including parking lots, parking garages, walkways, and building facades.

Signs

For signs, the Standards contain both prescriptive and performance approaches to compliance. Sign Standards apply to both indoor and outdoor signs. The Standards require that the signs be illuminated with efficient lighting sources and use a specific maximum power expressed in watts per square footage of sign area.