Abstract: This invention relates to the designation of aisles by providing a visual device for separating horizontal, vertical, or inclined spaces. In warehouse set-out areas merchandise or traffic patterns can more nearly be controlled by the use of this invention in designating these set-out spaces. In factories, safety aisles for pedestrian or vehicular traffic may, also, be more readily controlled by the use of the aisle designators described in these specifications. Also, on highways or where automobiles, trucks, and buses must travel the use of this invention can more safely guide the paths of travel by designating the aisles of movement.