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Case # IOOOOD-06 Page 4.3 Electronic message boards The proposed ordinance separates electronic message boards into four categories: changeable copy sign (electronic), electronic graphic display sign, video display signs, and time and temperature signs. As summarized below, the disparate nature of these sign types require development standards unique to each sign type. Changeable_ copy sign, electronic Text -only electronic -displays, typically used to advertise has prices at service stations. The proposed ordinance limits the amount of text displayed at one time to'improve readability by motorists. Each electronic m6ssage'must be displayed for a minimum of eight seconds; no portion of the message may flash, scroll, or in any manner imitate movement. Electronic graphic display sign — Electronic sign displaying both text and pictorial images. These signs have the technical capability to display high-quality, photo -like images in addition to text information. Due to the potential for greater distraction with this type of sign, each electronic message -must be displayed for a minimum of twenty minutes; no portion of the message may flash, scroll, or in any manner imitate movement. Video display sign — Electronic sign whose display is characterized by motion and pictorial imagery. These signs may possess the ability to display television -like images and programs. Time and temperature sign — Electronic sign displaying only time and temperature information. Each electronic message must be displayed for a minimum of two seconds; no portion of the message may flash, scroll, or in any manner imitate movement. Official signs and notices are exempt from the proposed ordinance. These signs are address in the existing sign code and defined as: "Official signs and notices - ' signs and notices erected and maintained by public officers or public agencies within their territorial jurisdiction and pursuant to and in accordance with direction or authorization contained in federal, state, or local law for the purposes of carrying out an official duty or responsibility. Historical markers -authorized by state law and erected by state or local governmental agencies or nonprofit historical societies and star city signs erected under Section 173.085 may be considered official signs." The following table represents- the percentage range of motorists who would view a message change on an electronic sign based on the time frequency of change and its visibility: 8 seconds 20 minutes 60 minutes Percent of passing motorists who would see sign change 4' + 10 seconds 100% 1.7% 0.6% 20 seconds 100% 3.3% IA% 30 seconds 100% 5% 1.7% Report to the Planning Commission September 14, 2006 Division of City Planning 33.