A bird mimicking the sound of a police siren confused officers with its convincing impression. Police officers at Thames Valley Police spotted the bird making the noises outside the Roads Policing ...

A Las Vegas woman pretending to be a police officer by flashing her headlights and playing a siren sound through her speakers ...

The sound of the 'warning' signal ... living in large cities in Britain. Air raid sirens were placed on the top of tall buildings - often police stations or similar - or on the top of poles ...