Flashing, blinking, twinkling, animated, scrolling or moving signs of any type are prohibited. No sign may display electronically moving images. Signs may change their message from time to time, provided that each message is visible for a minimum of six seconds, except as follows: time and temperature signs may change more frequently, and a sign with a sign area greater than 30 square feet shall not change its message more frequently than once every 20 seconds.
(1) In addition, flashing lights visible from a street shall not be used to attract attention to a business. This restriction specifically includes window signs, but does not prohibit Christmas lighting or displays, within §
285-51.
(2) Electronically changeable message signs shall not be allowed in a residential district.