I’ve never heard the transportation it’s self is dangerous but the people you will be forced into sharing a small inescapable space could be. Equating car accidents to being assaulted is comparing apples to oranges. No one is going to assault you or sexually assault you in your car, do drugs in your car without your consent, make your car smell horrible, piss in your car, etc. for your average driver, all those things are completely possible and more on public transit.