LIGHT TRESPASS When light falls where it is not wanted or needed. Use fully shielded light fixtures whenever possible.
GLARE Intense and blinding light that reduces visibility and causes discomfort. Direct light downwards and use the lowest adequate light intensity.
CLUTTER Excessive groupings of light sources that are bright and confusing. Only direct lighting onto desired areas and avoid excessive lighting.
SKYGLOW The brightening of the night sky over inhabited areas. Use fully shielded light fixtures, direct light downwards, use the lowest adequate light intensity, and optimize lighting placement.