Dobbins JLUS IMP Public Draft Light Pollution Study | Page 253

MODEL LIGHTING ORDINANCE - USER’S GUIDE
IV. NON-RESIDENTIAL LIGHTING - User’s Guide
This section addresses non-residential lighting and multiple-family
residences having common spaces, such as lobbies, interior corridors
or parking. Its intent is to:
MODEL LIGHTING ORDINANCE - TEXT
IV. NON-RESIDENTIAL LIGHTING - Ordinance Text
For all non-residential properties, and for multiple residential properties
of seven domiciles or more and having common outdoor areas, all outdoor
lighting shall comply either with Part A or Part B of this section.
• Limit the amount of light that can be used
• Minimize glare by controlling the amount of light that tends to
create glare
• Minimize sky glow by controlling the amount of uplight
• Minimize the amount of off-site impacts or light trespass
This MLO provides two methods for determining compliance. The
prescriptive method contains precise and easily verifiable requirements
for luminaire light output and fixture design that limit glare, uplight,
light trespass and the amount of light that can be used. The performance
method allows greater flexibility and creativity in meeting the intent
of the ordinance. Note that both the prescriptive and the performance
method limit the amount of light that can be used, but do not control
how the lighting is to be used.
Most outdoor lighting projects that do not involve a lighting
professional will use the prescriptive method, because it is simple
and does not require engineering expertise.
For the prescriptive method, the initial luminaire lumen allowances
defined in Table A (Parking Space Method) or B (Hardscape Area Method)
will provide basic lighting (parking lot and lighting at doors and/or
sensitive security areas) that is consistent with the selected lighting zone.
The prescriptive method is intended to provide a safe lighting environment
while reducing sky glow and other adverse offsite impacts. The Per Parking
Space Method is applicable in small rural towns and is a simple method for
small retail “mom and pop” operations without drive lane access and where
the parking lot is immediately adjacent to the road. A jurisdiction may
Appendix B: Model Lighting
Ordianance
USER’S
GUIDE - Page 11
ORDINANCE TEXT - Page 11
Page B-1