Section 16.28.055 Electronic changeable copy signs.

A. Zoning. Electronic changeable copy signs, or signs using a matrix of illuminated electronic elements to display text or images, shall be permitted in the CC-1, C-2, CP-2, CCP-1 and I-1 zones. Electronic changeable copy signs shall not include signs displaying the time and/or temperature with an area of changeable copy of less than ten (10) square feet.

B. Placement. Electronic changeable copy signs may only be placed upon parcels having frontage on Highway 40 or North Vernal Avenue. Electronic changeable copy signs placed within one hundred and fifty (150) feet of an existing residential use or zone shall require a conditional use permit. An electronic changeable copy sign shall only be placed as a monument, pole, multi-tenant commercial, wall or projecting sign and shall comply with all requirements and regulations for such signs.

C. Height. The maximum sign height shall not exceed forty (40) feet from the average adjacent grade to the top of the sign. No portion of the body of the sign shall be lower than fourteen (14) feet.

D. Area. The maximum area of an electronic changeable copy sign shall be fifty (50) square feet. Electronic changeable copy signs may be combined with other types of signs and their respective areas added together to calculate the maximum allowable area for the combined sign.

E. Density. Only one electronic changeable copy sign shall be permitted per parcel or business complex.

F. Separation. A minimum separation of one hundred fifty (150) feet shall be maintained between all electronic changeable copy signs.

G. Brightness. Electronic changeable copy signs may not have an illuminance level of more than three tenths (0.3) of a footcandle above the average ambient light level measured one hundred (100) feet from the face of the sign. If possible, the entire sign must be set to emit all white light when being tested for illuminance. The applicant shall have a licensed engineer certify that the sign meets this requirement at the time of the sign's installation.

H. Dimmer Control. Electronic changeable copy signs must have an automatic dimmer device installed to ensure that the brightness requirements are at no time exceeded.

I. Prohibitions. Electronic changeable copy signs shall not be programmed to flash, blink or fluctuate the intensity of lights or to operate intermittently so as to create a strobe effect. In no case shall the sign operate in any way that could cause it to be confused for any traffic safety device or public safety vehicle.