Ключевые слова: agricultural, agriculture, allowed, background, banned, beautiful, blue, caution, complementary, country, driving, environment, exception, farm, field, fields, forbidden, forestry, german, germany, green, landscape, nature, no, plate, prohibited, prohibition, red, regulation, regulations, regulatory, road, round, rule, rules, rural, school, season, sign, sky, street, summer, supplementary, symbol, traffic, travel, tree, vehicles, warning, way,