Harder
I’m referencing “doorway” lighting that is rarely used (rooftop-access doorways), parking-lot lights, streetlights and the types of fixtures that are supposed to be lighting the ground. With respect to reducing light pollution, this would allow city residents to see the stars.
I’m not convinced that the IES/IDA “zone” system for light levels (where they have higher light levels for various tasks based on the population density of a district) produces better vision or a safer environment. Perhaps zones should be assigned to limit total lumen allowances according to the wishes of a community. For example, around observatories or nature preserves, maximum lumens per acre could be useful. Communities need to determine for themselves, through local zoning, the allowances for exterior lighting.
Schwendinger
Yes — and how can we factor in commercial considerations?
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