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American National Standard for Roadway and Area Lighting Equipment—Enclosed, Post Top-mounted Luminaires. This standard is useful to roadway and area lighting manufacturers, municipalities, utilities; and provides requirements to allow for the interchangeability of enclosed, post top-mounted luminaires. It covers dimensional, maintenance, and light distribution features that permit the interchange of enclosed, post top-mounted high-intensity discharge lamps, solid-state light sources (i.e., LEDs), CFLs, and induction luminaires whose center of mass is approximately over the mounting tenon.