Are you implying everyone who gets in a traffic accident has full agency over the situation? Because that is laughably far from reality. It is infinitely easier to consciously avoid danger on the subway than in a car.
I can't control if some batshit crazy tries to set me on fire, aside from riding the subway less.
I do ride the subway, BTW. But I definitely do not habitually walk as close to the platform edge as I used to given how public safety has slide the last handful of years. I blame, of course, de Blasio.
I would note that people can falsely believe things about how much agency they really have, and that this seems to be the case with cars vs. public transit.