Dobbins JLUS IMP Public Draft Light Pollution Study | Page 55
5. Overview of Lighting Regulations
under the terms of this chapter or any other ordinance enacted by the
governing authority.
Electronic signs shall contain static messages or images only, and no
animation, movement, or flashing on any part of the sign structure,
design, or pictorial segment of the sign, nor shall such sign have
varying light intensity during the display of a static message.
Signs allowed in zoning districts are identified in Section 82‐16. Electronic
signs that display messages through LED, LCD, plasma or other similar types
of panel or screens, are allowed in zoning districts provided they are
operated accordingly:
Each individual static message or image must be displayed for no
less than 60 seconds. Transitions between static messages or
images may use frame effects which result in the movement of a
displayed image or message during such transition. Transition time
between static messages or images shall be limited to a maximum
time of three seconds.
Electronic signs must operate within brightness levels as established
in this chapter.
All electronic signs must be equipped with a default mechanism
that will stop messaging or freeze the image in one position when a
malfunction in the electronic programming occurs.
The owner of said electronic sign shall provide to the Department of
Community Development, the information for a 24‐hour contact
able to turn off the electronic sign promptly if a malfunction occurs.
If, at any time, more than 50 percent of the digital display lights
malfunction or are no longer working, the owner of said electronic
sign shall turn off the electronic display until repairs are made.
Each electronic sign must have a light sensing device that will adjust the
brightness of the display as the ambient light conditions change.
Electronic signs located on nonresidential zoned property shall not
operate at brightness levels of more than 0.20 footcandles above
ambient light levels (at measurement conditions) as measured at a
distance of 100 feet.
If the electronic sign is located in the line of sight of a residentially
occupied structure on a residentially zoned property, such
electronic sign shall not operate at brightness levels of more than
0.10 footcandles above the ambient light levels (at measured
conditions) as measured at the nearest portion of such residential
structure.
Unless otherwise specified, a business shall seek approval from the Mayor
and City Council for the use of searchlights during special events in
nonresidential zoning districts. The searchlights must not be directed into
residential areas or onto public rights‐of‐way. Additionally, subdivisions,
currently under development, in addition to having permanent entrance
signs may also have up to two additional directional / informational signs
provided the development is not being advertised with human signage
within the city limits. These signs shall be located away from the subdivision
at either arterial or major collector street intersections provided the
following standards are adhered to:
March 2018
DRAFT Dobbins Air Reserve Base Light Pollution Study
Page 5‐5