Ключевые слова: accident, alarm, alert, ambulance, arrest, attention, automatic, background, beacon, bulb, car, caution, city, danger, electric, emergency, equipment, fire, flash, gate, glass, illuminate, isolated, lamp, lantern, law, light, medical, nobody, norrland, outdoor, plastic, police, red, rescue, rotating, safety, security, service, sign, signal, siren, sweden, symbol, traffic, transportation, umea, urgency, warning, white,