2 county-level rules, plus city-specific rules for 1 city in Dane County, Wisconsin.
Verified from official government sources
Madison MGO §28.140 and Dane County zoning require full-cutoff fixtures for commercial and multifamily outdoor lighting. Max 0.5 foot-candle spillover at residential property lines. No county-wide dark-sky ordinance, but UW-Madison Washburn Observatory influences local practice.
Madison MGO §28.140 caps light spillover at 0.5 foot-candle at any residential property line. Dane County enforces similar limits via zoning. Common-law nuisance claims also available. Security and flood lights must be aimed and shielded.
1 cities in Dane County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
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