Some credit to the road and vehicle engineers should probably be given here.
There are design decisions that make it easier for humans to avoid crashes, and that reduce the damage of crashes when they do occur.
Not sure how many of those nines in the human reliability figure represent a ‘unit of engineering effort’ by highway/vehicle designers over the last hundred years, but it isn’t zero.
Some credit to the road and vehicle engineers should probably be given here.
There are design decisions that make it easier for humans to avoid crashes, and that reduce the damage of crashes when they do occur.
Not sure how many of those nines in the human reliability figure represent a ‘unit of engineering effort’ by highway/vehicle designers over the last hundred years, but it isn’t zero.