Abstract
ABSTRACT Propelled by more energy-efficient technologies such as light-emitting diodes, the growth of outdoor light at night is raising concerns about light pollution (LP). Given mounting evidence of LP’s risks to human wellbeing, nature and wildlife, and views of the dark sky, this paper examines the extent to which LP concerns are addressed in land use plans, policies, and regulations in nine U.S. cities, including Flagstaff, Arizona, a city known for its model lighting code. Through a review of zoning and other ordinances, area and sectoral plans and policies, media reports, and interviews with planners, this study documents that LP has yet to be taken seriously in municipal codes of most study cities. Drawing from the Flagstaff model, it offers recommendations for evidence-based, objective standards for three key dimensions of LP-mitigation: limiting total illumination or lumens per acre, shielding of lamps, and specifying luminaire characteristics. ABBREVIATIONS AMA: American Medical Association; APA: American Planning Association; CCT: Correlated Color Temperature; CRI: Color Rendition Index; ESCO: Energy Service Companies; f.c.: foot candle; HPS: High-Pressure Sodium; IDA: International Dark-Sky Association; LED: Light-Emitting Diode; LP: Light Pollution; LPS: Low-Pressure Sodium; LZ: Lighting Zone; NSA: Narrow-Spectrum Amber
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