PURPOSE AND INTENT
The Land Development Code includes a new section that regulates outdoor lighting. The purpose of the regulation is to provide clear standards for the installation of new outdoor lighting that will reduce nuisances of light trespass and glare, maintain and complement the community's character, and to provide a safe nighttime environment for pedestrians, motorists and properties. The regulations vary according to the form district in which a site is located.
The standards in the lighting regulation shall apply to all new outdoor “luminaires” (lighting fixtures) erected in Metro Louisville. Fixtures in place before the effective date of this regulation that do not meet the standards of Section 4.1.3 may remain in place as nonconforming luminaires. When nonconforming luminaires are removed or replaced the new luminaires shall comply with the standards of the lighting regulation.
All new light fixtures must be shielded to focus light on the property being
illuminated (see illustration). The following luminaire shielding requirements
|Form District||Level of Shielding|
|Neighborhood, Traditional Neighborhood or Village form districts||Fully Shielded so that no direct light emits above a horizontal plane.|
|All other form districts||Shielded so that no more than 2.5 percent of the lamp lumens emits above the horizontal plane.|
MOUNTING HEIGHT LIMITS
Height limits are established for outdoor lighting in the residential form districts:
|Form District||Mounting Height Limit|
|Neighborhood or Village form district||30 feet|
|Traditional Neighborhood, Traditional Workplace or Traditional Marketplace Corridor form district||20 feet|
|All other form districts||N/A|
CANOPY OR DRIVE-THROUGH BAYS
All luminaires mounted on or recessed into the lower surface of canopies or drive-through bays shall be fully-shielded and utilize flat lenses. The lighting levels under these structures shall comply with the following standards:
|Form District||Maximum Lighting Level|
|Neighborhood, Traditional Neighborhood, Traditional Marketplace Corridor, Traditional Workplace, and Village form district||50 footcandles|
|All other form districts||70 footcandles|
These lighting types are prohibited:
|Please see Chapter 4, Part 1, Section 3 of the Land Development Code for the entire text of the lighting regulation.|
The LDC regulates light “trespass” onto adjacent streets and residential sites. Light that spills across property lines shall not exceed the following standards:
The Planning Commission may waive the requirements of the Land Development Code, including the lighting regulation. Adjacent property owners are notified two weeks prior to the Commission’s action on any waiver request.
LIGHTING REGULATION TERMS
Luminaire = A complete lighting system, including a lamp or lamps and a fixture.
Light Trespass = The shining of light produced by a luminaire beyond the boundaries of the property on which it is located.
Fully-Shielded Light Fixture (also known as Full-cutoff) = A lighting fixture constructed in such a manner that all light emitted by the fixture, is projected below the horizontal. Any structural part of the light fixture controlling light emissions must be permanently affixed.
Shielded (also known as cutoff) Light Fixture = A lighting fixture constructed in such a manner that no more than 2.5 percent of the lamp lumens are emitted above the horizontal plane through the lowest direct-light-emitting part of the luminaire.
Sag-lens or Drop-lens = A clear or prismatic refracting lens that extends below the lowest opaque portion of a light fixture.