The supplemental regulations of this section apply to all signs with dynamic displays. Except as otherwise expressly stated, these regulations apply whether incorporated into off-premises outdoor advertising signs or on-premises signs that are allowed to include a dynamic display.
A. The images and messages displayed on a dynamic display must have a minimum dwell time of at least eight (8) seconds and may not contain any movement, animation, audio, video, pyrotechnics or other special effects.
B. The transition or change from one message to another must occur in one second or less and involve no animation or special effects.
C. The images and messages displayed must be complete in and of themselves within the required dwell time.
D. Dynamic displays may not be located within fifty feet (50') of the driving surface of a signalized intersection, measured horizontally in a straight line from the nearest point of the sign structure to the nearest point of the intersection.
E. Dynamic displays may not be located within or within twenty feet (20') of the driving surface of a street, measured horizontally in a straight line from the nearest point of the sign structure to the nearest point of the street curb or edge of the traveled roadway marked or understood as such.
F. Dynamic displays may not be located within two hundred feet (200') of any of the following: 1) an R District or 2) a residential development area. This separation distance does not apply if the dynamic display is not visible from the referenced district, area or lot, and the requirements may be modified in R and AG Districts if approved through the special exception process. Required separation distances must be measured horizontally in a straight line from the nearest point on a sign structure to the nearest point of an R District or residential development area boundary.
G. Dynamic displays must be equipped with a default mechanism that freezes the display in one position or presents a static or blank display if a malfunction occurs.
H. Dynamic displays must be equipped with a light detector/photocell that automatically adjusts the display's brightness according to natural ambient light conditions.
I. The maximum brightness level of a dynamic display may not exceed six thousand five hundred (6,500) nits (candelas per square meter) during daylight hours or five hundred (500) nits between thirty (30) minutes after sunset and thirty (30) minutes before sunrise, as those times are determined by the National Weather Service (Actual Time). Brightness must be measured from the brightest element of the sign's face. (Ord. 2018-16, 12-4-2018)