Ключевые слова: accident, attention, background, banner, barricade, black, color, concepts, construction, cordon, crime, cross, crossing, danger, district, forbidden, force, illustration, isolated, law, letter, line, murder, objects, plastic, police, problems, protection, ribbon, risk, safety, scene, security, sign, stealth, street, symbol, system, tape, text, urban, warning, word, yellow,