Why do seatbelts stop when you pull them hard?

Question

EDIT: I understand that it’s supposed to be for safety. I’m asking because I’ve only experienced the stopping mechanism when I pull. I’ve hit the brakes very abruptly before but nothing. Should I get it looked at?

In: 2

Answer 1

> I’ve hit the brakes very abruptly before but nothing.

Were you at risk of flying out the windscreen in that situation? No, which is why it didn’t go off.