Sec. 18-7-40.   Outdoor lighting standards.
   (a)   General standards.
      (1)   Exterior lighting. All exterior lighting shall be designed, located, and lamped in accordance with the provisions of this Section in order to prevent or minimize:
         a.   Energy waste;
         b.   Glare;
         c.   Light trespass;
         d.   Over lighting;
         e.   Skyglow.
      (2)   Nonessential lighting. All nonessential exterior commercial, recreational, and residential lighting shall be turned off after business hours and/or when not in use. Lights on a timer are encouraged. Sensor activated lights are encouraged to replace existing lighting that is desired for security purposes.
      (3)   Canopy lights. Canopy lights, such as service station lighting or covered entries, shall be fully recessed or fully shielded so as to ensure that no light source is visible from or causes glare on public rights-of-way or adjacent properties.
      (4)   Area lights. All area lights shall use full cutoff type fixtures.
   (b)   Placement.
      (1)   Exterior lighting shall be installed in a manner that prevents the light rays and/or illumination from being cast beyond any property boundary.
   (c)   Illuminance and type.
      (1)   All outdoor lighting fixtures with an output equal to or greater than five hundred (500) initial lamp lumens shall be a full cutoff fixture and fully shielded with the following exceptions:
         a.   Luminaires may be partially shielded provided that the lamp is not visible and the luminaire has an opaque top or is under an opaque structure.
         b.   Floodlights with external shielding shall be angled provided that no light is directed above a twenty-five degree (25°) angle measured from a vertical line from the center of the light extended to the ground.
      (2)   Outdoor lighting with an output of less than five hundred (500) initial lamp lumens may be left unshielded.
      (3)   Lighting must be chosen to minimize the amount of short-wavelength light emitted into the nighttime environment. The correlated color temperature (CCT) of lamps shall not exceed three thousand (3,000) Kelvins.
      (4)   All metal halide and fluorescent fixtures shall be filtered with glass, acrylic or translucent lamp enclosures.
      (5)   The installation of any mercury vapor fixture or lamp for use as outdoor lighting is prohibited in any new construction or new replacement.
      (6)   Only high-pressure sodium (HIPS), low pressure sodium (LIPS), LED or incandescent fixtures shall be permitted in commercial and multifamily residential parking areas. (Ord. 433 § 1, 2021)