Ключевые слова: accident, ambulance, arrest, authority, auto, background, blue, car, city, cop, crime, criminal, danger, department, emergency, enforcement, equipment, flasher, flashing, law, light, lights, night, officer, order, patrol, police, protection, red, rescue, road, safety, scene, security, service, siren, street, surveillance, technology, traffic, transportation, urban, urgency, vehicle, warning, white,