It should be optional period. You want to save lives how about disable stolen cars, so joy ride Kias dont kill pregnant mothers. Imagine emergency braking a F-350 with a gooseneck and two tractors on it. Does not end well.
What if it being optional increases death statistics massively? Should we really be ideologically driven instead of relying on data and measurable effects?
We can easily pass a law requiring AEB in new cars. Can you explain the mechanism that would allow legislating free will? Or were you just looking for any counter example, no matter if it makes the least bit sense?
You think statistics override basic principles of human dignity. I'm merely exposing your argument for the absurdity it is.
> What if it being optional increases death statistics massively?
What else would you like to make mandatory to satisfy your death reduction statistics, I wonder? Vaccines?
Let's just go all the way: you're talking about eliminating human agency, autonomy and free will. You want to replace it with decisions made by committee with optimized outcomes and make them mandatory with force of law.
> Should we really be ideologically driven instead of relying on data and measurable effects?
Yes. Do you not have principles, values you won't compromise on?