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A newly published study from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute shows that improving the uniformity of lighting in parking lots can increase the sense of safety and security, as well as provide up to an additional 75% energy savings by lowering total light levels. The study describes a field demonstration, human factors study, and systems analysis that tested the relationship between illuminance, uniformity, and user acceptance in parking lots, and calculated the advantage that LED luminaires offer at producing more uniform beam patterns compared with HID luminaires.