Bangladesh's opposition clash with police over fears elections in January will be rigged

The video features the sound of police sirens, divided into two sections. The first section introduces the sound, while the second section continues the siren sound.

What is the primary purpose of a police siren?

• To entertain the public

• To alert and clear the way for emergency vehicles

• To signal the end of a shift

• To indicate a traffic stop

In what situations are police sirens most commonly used?

• During parades

• In emergency situations to alert traffic

• For routine patrols

• To announce public events