(1)

Light number and direction. Signs that are illuminated from an external source shall have a maximum of four external lights directed at only the copy area from a downward angle attached to the top of the sign or sign structure.

(2)

Glare. Signs that are not effectively shielded to prevent beams or rays of light from being directed at any portion of a road and that are of such intensity or brilliance as to cause glare or impair the vision of the driver of a motor vehicle, or that otherwise interfere with any driver's operation of a motor vehicle, are prohibited.

(3)

Nits. Electronic message sign copy areas shall not exceed a maximum illumination of 5,000 nits during daylight hours and 500 nits between dusk to dawn as measured from the sign's face at maximum brightness.

(4)

Zoning. Illuminated signs shall only be permitted in areas zoned commercial, industrial, or recreational commercial.

(5)

Interference with traffic signals. No sign may be illuminated so it interferes with the effectiveness of, or obscures, an official traffic sign, device, or signal.

(6)

Changing light sources. No sign shall use flashing, moving, reflecting, or changing light sources in any way.