In the history of outdoor advertising Tri-O-Visions stand out because of the ingenuity and economy of design. This particular medium allows for a greater punch as the advertiser has three chances to get the message across.
Tri-O-Visions are three-faced revolving signs, also known as changeable message signs. These signs are powered by induction motors. The display area comprises of a series of triangular, aluminum panels allowing three different sign images to be displayed on each side instead of one.
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