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attitude. Flashing is a frame effect that is prohibited in many communities, but <br />other more subtle transitions can be accepted. It is relatively easy to define four <br />basic levels of operational modes for message transitions that can be incorporated <br />into a sign code: <br />1 l Static Display Only (messages changed with no transition) <br />Level 2 ~ Static Display with "Fade" or "Dissolve" transitions, or similar <br />subtle transitions and frame effects that do not have the <br />appearance of moving text or images <br />Level3 Static Display with "Travel" or "Scrolling" transitions, or <br />similar transitions and frame effects that have text or <br />animated images that appear to move or change in size, or be <br />revealed sequentially rather than all at once <br />Full Animation, Flashing and Video <br />There are, in fact, other operations recognized within the industry. However, in <br />practice they can be equated in visual impact with "fade," "dissolve," "travel" or <br />"scrolling," based on their visual effect, or otherwise be considered full animation. <br />v- <br />Different transition operations may be acceptable in different locations. For <br />example, communities like Las Vegas accept full animation as a community <br />standard, whereas others accept full animation only in urban core locations where <br />a sense of visual vitality and excitement is desirable. Some communities may <br />desire not to have an area with such visual stimuli, and elect to prohibit animation <br />everywhere. However, in such a community, fade or scrolling may be acceptable <br />forms of message transitions for static displays. In the most conservative <br />communities, static displays with no observable transition between messages may <br />be the only acceptable course. ,~.r <br />The next decision point for a community seeking to regulate electronic signs is <br />procedural. Some signs may be acceptable always, while the community may <br />determine that others are acceptable only in certain given circumstances. <br />Alternatives to be considered for a sign code are as follows: <br />• Permit electronic signs "as a matter of right" <br />• Permit electronic signs with certain transitions "as a matter of right" <br />• Permit electronic signs, subject to a review procedure <br />3 1 - 11 <br />