I understand, I know it's a problem in France too, even in hospitals. Or Firefighters being called only to be attacked...

However that exists already, without a way to track the rescue team sent to you...

if someone wants to attack them they can call them. so what's the point of not providing this very useful information to the public?

I'm certainly not suggesting that. Read on.

An emergency dispatcher could send a Text message back with a link to a private, case-limited, web page with an ETA + a map + the ambulance location in real time.

See? no "real-time public broadcast of all the addresses a medical event has occurred at".

there's no need to post 7 digits accurate GPS coordinates, the important thing is to have an understanding of how many are how far from where they are going to, ETA, what's the capacity (free units ready or cars yes crew not, or vice versa)