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RELEVANT LINKS: <br /> • Complete or near-complete bans that do not allow dynamic signs at all. <br /> • Allow dynamic signs with restrictions such as minimum display time, <br /> allowing only a percentage of a sign to change, or text size limitations. <br /> • Allow different things in different zoning districts, such as allowing <br /> brighter dynamic signs in a downtown business district than in <br /> residential neighborhoods. <br /> • Offering incentive programs to billboard companies to allow dynamic <br /> signs in exchange for removal of non-conforming static signs. <br /> • Encourage dynamic displays. Some communities like the clean, new <br /> look of dynamic signs and encourage them to remove old blighted and <br /> poorly maintained signs. <br /> B. Sign aspects <br /> Sample sign ordinance,City A content-neutral regulation that regulates dynamic signage will be subject <br /> of Hopkins. <br /> to intermediate scrutiny, so a community must show a regulation is <br /> substantially related to a significant government interest. In plain language, <br /> you must articulate what problem a regulation is intended to address and <br /> how the regulation addresses it. <br /> There are at least six aspects of dynamic signs that regulations may address <br /> this. The specifics of how to regulate each of these aspects is up to each <br /> community. Because review of regulations must face intermediate scrutiny, <br /> cities have to take some extra steps when drafting and adopting ordinances. <br /> For each aspect regulated, cities should consider adopting findings or local <br /> studies that articulate the reason and any support for the regulation. The SRF <br /> study and other materials can provide a scientific basis for a number of <br /> regulatory steps. In addition, cities may choose more stringent regulation in <br /> order to take a conservative approach to protecting safety. <br /> 1. Duration of message/speed of changeover <br /> Studies have described the Zeigarnik effect, a psychological need to see a <br /> task through to its end. In the case of dynamic signs, a driver's desire to read <br /> an entire message before it changes or to complete a scrolling message has <br /> been shown to negatively impact drivers' tendencies to maintain a constant <br /> speed or remain in a lane. To address these issues, many cities have imposed <br /> minimum message durations that might vary depending on community <br /> preference and traffic conditions. <br /> League of Minnesota Cities Information Memo: 7/27/2007 <br /> Regulating Dynamic Signage Page 3 <br />