Luke Davidson on MSN

The scariest emergency sirens sound similar - their meanings are completely different

The video runs through warning sounds with very different meanings. One early siren is described as an all-clear signal ...
Government Technology

Sacramento, Calif., Police Cars to Get Hi-Lo Warning Sounds

(TNS) — All new Sacramento police vehicles will be equipped with a Hi-Lo warning sound to alert the public during evacuation orders and other major emergencies, the Sacramento Police Department ...