It is also used in nighttime work areas, sports facilities, landscapes and cityscapes. A wide selection of new lamps, ballasts, fixtures and controls are available to lighting designers to replace inefficient exterior lighting systems. Action Moment Exterior lighting systems using incandescent, fluorescent, or mercury vapor lamps should be evaluated, redesigned, and replaced with new hardware using compact fluorescent, metal halide, or sodium lamps. Technical Information Exterior lighting principles should be considered when implementing any exterior lighting retrofit. These principles assist in achieving energy conservation and also provide superior lighting quality to users.
Glare greatly detracts from nighttime visibility.
If two parking lots are equally illuminated to 5 footcandles, the installation with the least glare from the fixtures will provide the greatest visibility, safety, and visual comfort. Unfortunately, numerical levels for glare are not included in exterior lighting standards. At these high angles light produces significant glare, light pollution, and energy waste. New fixtures allow designers to control where light falls. By eliminating light spillage into surrounding areas, lower wattage lamps can be used.