Police Car Light on Snapchat

What it signals here

friend system usage

Sent in snaps to signal 'this is urgent, look at this now' or to hype up a dramatic story reveal.

streak use

Rarely used in streak maintenance; may appear if someone is dramatically notifying a friend about a streak almost ending.

story meaning

Placed on story slides before big personal announcements or dramatic life updates shared with close friends.

snap context

Used in the context of sharing wild or alarming things happening in real time — parties gone wrong, unexpected events, etc.

See it elsewhere