A truism, which is not very useful. The strategy of reducing speed to reduce collisions/severity compared to reducing dangerous behavior that leads to collisions is like the failed war on drugs.
I’ve been hit a few times in US and always it’s a distracted driver going fast and not following any rules. Speed limit didn’t slow them one bit. Not even in a school zone. Training, enforcement and more training is in my view a better answer. Not perfect, but better.