What innovations or ideas have been presented to reduce derailments? What would it take to build a train that could sacrifice one car (i.e. let it derail) to s

What innovations or ideas have been presented to reduce derailments? What would it take to build a train that could sacrifice one car (i.e. let it derail) to save the rest of the train from the same fate? Start by instrumenting each car and coupling with inertial and spatial sensors. Gather some stability control engineers from the automotive industry perhaps. What could be done?