Ключевые слова: abstract, background, billboard, blank, blue, board, business, choice, clear, cloud, concept, conceptual, cross, crossroads, day, design, direction, drawing, empty, explore, frame, graphic, green, guide, guidepost, high, illustration, light, message, notice, outdoor, pole, post, presentation, road, roadsign, route, sign, signage, signpost, sky, summer, symbol, traffic, travel, turn, warning, way, yellow,