Ключевые слова: advance, advice, advisory, aim, arrow, arrowhead, asphalt, away, back, background, begin, beginning, business, challenge, choice, choosing, colour, coming, concept, decision, direction, drive, driveway, export, follow, following, going, highway, idea, import, in aero, in and out sign, lights, marking, motion, moving, nobody, option, out aero, pointer, question, road, road signal, signal, solution, street, tarmac, transport, transportation, trial, urban, vehicle test, vehicle trial signs, vichele,