Ключевые слова: allow, amber, background, blue, change, check, city, cloud, color, colorful, concept, control, controler, cross, crossroad, digital, drive, empty, environment, go, information, junction, light, number, object, protection, ready, recycling, red, safe, safety, semaphore, set, sign, signal, stop, street, traffic, transportation, travel, type, urban, warning, way,