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(3) The pedestal width of a ground sign must be at least equal to the sign width. (4) The principal structure of a parcel of land will be allowed one ground sign, regardless of the number of tenants in the structure. (Ord. 08-002, passed 4-22-2008) Penalty, see § 10.99 § 155.28 WALL SIGNS. The sign surface area of a wall sign may not exceed 15% percent of the area of the wall to which it is applied. (Ord. 08-002, passed 4-22-2008) Penalty, see § 10.99 §155.29 DYNAMIC DISPLA VS. (A) Findings. Studies show that there is a correlation between Dynamic Displays on signs and the distraction of roadway drivers. Distraction can lead to traffic accidents. Drivers can be distracted not only by a changing message, but a lso by knowing that the sign has a changing me ssage. Drivers may watch a sign waiting for the next change to occur. Additionally, drivers are more di stracted by special effects used to change the message, such as fade-ins and fade-outs. Time and temperature s igns appear to be an exception to these concerns because the messages are short, easily absorbed, and become inaccurate without frequent changes. Despite these public safety concerns, there is merit to allowing new tec hnologie s to easily update messages. Except as prohibited by state or federal law, sign owners sho uld have the opportunity to use these technologies with certain restrictions. The restrictions are intended to minimize potential driver distraction and to minimize proliferation in residential districts where signs can adversely impact res idential character. Spacing requirements enforced by the City Code could interfere with the equal opportunity to use such technologies and are not included. Without those requirements, however, there is the potential for multiple D ynamic Displays to exist along a corridor. If more than one Dynamic Display can be seen from a given location on a corridor, the minimum display time becomes critical. If the display time is too short, a driver could be subjected to a v iew that appears to have constant movement. This impact would be compounded in a corridor with multiple signs . If Dynamic Displays become pervasive and there are no meaningful limitations on each sign's ability to change frequently, drivers may be s ubjected to an unsafe degree of distraction and sensory overload. Therefore, a longer display time is appropriate. Additionally, a constant message is typically needed on a s ign so that the public can use it to identify and find an in tended destination. Changing me ssages detract from this way-finding purpose and could adversely affect driving conduct through last -second lane changes, stops, or turns , which could result in traffic accidents. Accordingly, Dynamic Displays generally should not be allowed to occupy the entire copy and graphic area of a sign . The City finds that Dynamic Displays shou ld be allowed on signs but with signi ficant controls to 123