Ключевые слова: alarm, alert, ambulance, arrest, attention, background, barricade, barrier, beacon, bulb, car, caution, construction, danger, electrical, electronic, emergency, equipment, fire, flash, industrial, lamp, light, nobody, orange, police, protection, red, rescue, road, roadblock, rotating, safety, security, sign, signal, siren, speed, street, symbol, technology, tool, traffic, transportation, urgency, vehicle, warn, warning, white, work,