[topkai22]

You are right in "the way we currently use them", but that doesn't make buses inherently as safe as you imply. Buses get professional, trained drivers, subject to substance abuse testing and rest laws, consistently driving the same route. In the resource you shared, it looked like professionally driven cars (presumably mostly taxis and town cars? from 2000-2009) also had dramatically lower death rates, although they didn't give the deaths/passenger mile number.