New electronic module to safeguard self-driving vehicles against total failure of onboard electrical systems

Autonomous electric vehicles draw power from two sources: a high-voltage battery and, additionally, a conventional 12-volt battery that supplies the vehicle when idling or in high load situations while driving. Safety-critical systems such as brakes and steering can therefore be connected to two sources of power. But what happens when one of these has a fault—a short circuit, for example?

https://www.greencarcongress.com/2020/12/20201206-fraunhofer.html