Why haven't car manufacturers standardized automatic brake lights when a built in accelerometer detects deceleration?

https://lemmy.world/post/17541124

Why haven't car manufacturers standardized automatic brake lights when a built in accelerometer detects deceleration? - Lemmy.World

I personally think cars should have two brake light switches. one for when you’re pressing the pedal at all, and one for when you’re slamming on the pedal.

that way the people behind you know if you’re just slowing down a little or actually braking.

Most modern cars now put the hazards on automatically when the driver brakes hard.
Source? I have never seen a single car that does this.
First time surprised me my because I didn’t know the car had the feature. Slammed the brakes harder than normal and hazards flashed at double time. Driving a 2010 Alfa Romeo 159.

It’s a fact.

I’m a truck driver in Germany, and even my Volvo truck turns the hazards on under hard braking.

In Europe it is required for vehicles decelerating faster than 6metres/s^2^ and I believe some vehicles might activate their fog tail lights too.

I don’t know what the system is called but it’s been around on a lot of cars for a while now. Our car does it (2016 Nissan Qashqai) - the hazards came on automatically when I had to brake hard on the motorway, and everyone else’s hazards came on too - it was exactly the reason I knew how I knew I had to instantly brake hard due to all the cars ahead hazard lights coming on with the brake lights.