Mount Pleasant, SC Outdoor Lighting: Billboard Lighting (2026)

816, in Chapter 156's Subchapter G (Signs), sets illumination standards applicable to all signs. General standards in division (A)(1) require any illuminated sign near a residential area to use a rheostat or similar device to avoid excessive glare, bar light that simulates traffic-control or emergency-vehicle signals, and require a steady, stationary light source. Division (A)(3), governing external illumination, sets four numeric and design requirements: the light must be shielded and directed solely at the sign; it cannot be visible from any street right-of-way or create glare hazardous to drivers and pedestrians or a nuisance to neighbors; the intensity cannot exceed 20 footcandles at any point on the sign face; and the light color must be white.

828), the category covering billboard-style advertising and limited to the Light Industrial District, do not set their own separate lighting rule, this general Part 1 illumination standard governs any lit billboard the town allows. Internal illumination is separately addressed in division (A)(2), requiring opaque backgrounds so only letters, numbers, or logos glow. The rule was adopted in the town's 1-14-2025 zoning rewrite and is administered by the Planning, Land Use and Neighborhoods Department.