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Model Lighting Ordinance

The Model Lighting Ordinance (MLO), produced jointly by the Illuminating Engineering Society (IES) and the International Dark-Sky Association (IDA), provides a template for municipalities seeking to develop standards for responsible outdoor lighting.  Specifically, the MLO addresses skyglow, or light emitted up into the sky that obscures nighttime viewing of stars; light trespass, or light emitted onto neighboring property; and glare, or excessive brightness that impairs or disables vision.

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