Ключевые слова: accident, alarm, alert, ambulance, arrest, attention, background, beacon, blue, bulb, car, city, danger, editorial, electrical, electronic, emergency, equipment, fire, flash, illustrative, industrial, lamp, law, light, orange, police, red, rescue, road, rotating, safety, security, service, sign, signal, siren, speed, street, symbol, technology, tool, traffic, transportation, urgency, vehicle, warn, white, work,