Ключевые слова: area, blue, board, boundary, bright, building, clarity, clearance, closeup, communication, dimension, display, distance, graphic, green, height, icon, illustration, indicator, landmark, length, light, line, marker, marking, measurement, notice, outdoor, point, red, road, rules, safety, scale, sight, sign, signage, site, size, sky, standard, street, traffic, vertical, visibility, visual, warning, water, zone,