Obstructions. No signs shall be placed in such a position as to endanger traffic on a street by obscuring a clear view, or by confusion with local street signs, or signals, by virtue of position or color. A clear sight triangle of 25 feet inward from the edge of the paving, in the case of a private exit, and in the case of a public road or highway, a clear sight triangle of 25 feet inward from the right-of-way of both intersecting streets is required. In addition, no sign shall be so located or arranged so that it interferes with traffic through glare, through blocking of reasonable sight lines for streets, sidewalks, or driveways, confusion with traffic control devices by reason of color, location, shape, or other characteristics, or through any other means.