PURPOSE
- To allow adequate night time lighting that provides safety, utility, and security while prohibiting excessive light trespass beyond property boundaries.
- To protect residential areas from the glare and ambient spillover of lighting in abutting commercial areas.
- To protect drivers from the glare caused by lighting on properties fronting onto thoroughfares (not including alleys).
- To reduce the consumption of electricity for lighting purposes.
- To require lighting fixtures and layout patterns that contribute to unified exterior lighting design of development.
APPLICABILITY
- Applies to all outdoor lighting fixtures except for the following:
- Sign lighting (see Signage standards).
- Holiday lighting.
- Outdoor lighting used for emergency equipment and work conducted in the interest of law enforcement or for public health, safety, or welfare.
- Ground mounted pedestrian lighting.
GENERAL
- Lighting levels are regulated by District according to total permitted lumens per square foot, a unit of measurement related to light intensity.
- The total lumens of all outdoor lighting may not exceed the total site lumen limit of Total Site Lumens Table.
- Light levels must be specified, calculated, and measured in lumens per square foot, as calculated by multiplying the square footage of the paved portion of the area to be lighted by the allowed lumens per district to determine a total maximum number of allowed lumens for that area.
- Total allowed lighting for any given area should be evenly distributed across the paved portion of a site.
- Lights may not have a color temperature in excess of 3,000 Kelvin.
- All outdoor light fixtures must be energy efficient and produce at least 80 lumens per watt of energy consumed, as documented by manufacturer’s specifications or the results of an independent testing laboratory.
- The use of sensors, timers, or other means to activate outdoor light fixtures on demand and only when it is needed is encouraged to conserve energy, provide safety, and promote compatibility between different land uses.