What is "Camera HP f800x - AAC/DEC alert" meaning ?

[beautypop258]

In my camera HP f800x, it has an option is "AAC/DEC alert" which produces voice or beep when the car accelerates 20 km/h in one second when driving at speeds at 80km/h, or decelerates 30km/h in one second when driving at speeds under 50km/h after position determined by GPS. I know how it work but i really don't know what it work for ? Could you explain and show me example to understand ? I don't see any dangerous to alert.

 

[jokiin]

Haven't heard of that but can't see a practical application

 

[beautypop258]

Haven't heard of that but can't see a practical application

I screen shot Camera User Manual. And yeah, I don't see any practical application, too.

 

[dash riposki]

It may be useful to let you know you ran into a very large brick wall?
(Assuming you are alive and can hear the beep)

The thing I can think of them attempting to do with this is some method to increase fuel economy by avoiding heavy acceleration, and braking.

 

[Ralph2]

Or.. to see if the person you loaned the car to is driving aggressively??

 

[dash riposki]

Unless it records the incident , somehow, not sure anyone would know later?