[rvnx]

I read a book about elevators accidents; don't.

[Akronymus]

With people properly using them or not?

I am fairly certain that the vast majority comes from improper use (bypassing security measures, like riding on top of the cabin) or something going wrong during maintenance.

[yjftsjthsd-h]

elevators accidents or escalator accidents?

[rvnx]

elevators. for escalators, make sure not to watch videos of people falling in "the hole".