Ключевые слова: ahead, alarm, alert, angled, automotive, below, blue, caution, communication, concept, control, cruise, danger, dark, drive, driving, halt, highway, illegal, journey, law, lawful, legal, message, metaphors, obey, octagon, order, outside, pole, prevent, prevention, protect, protection, public, reads, red, regulate, regulations, road, roadtrip, rules, safe, safety, scuffed, security, shield, sign, signage, signs, skies, sky, stop, stopping, street, symbol, text, traffic, transportation, travel, trip, vertical, warn, warning, word,