All signs that imitate or resemble any official traffic sign, signal or device; or that use a revolving beam or beacon resembling any emergency vehicle; or that are located or illuminated in such a manner as to obscure or otherwise interfere with the effectiveness of an official traffic sign, signal or device, or so as to obstruct or interfere with a driver's view of approaching, emerging, or intersecting traffic, or so as to prevent any traveler on any street from obtaining a clear view of approaching vehicles for a distance of 250 feet along the street.