Waymo seem to have gone to quite some effort to make the failure modes of their tech as benign as possible, preferring to stop the car and make the safety drive

Waymo seem to have gone to quite some effort to make the failure modes of their tech as benign as possible, preferring to stop the car and make the safety driver take control rather than risking it and hoping they'll step in. They may also have safety drivers that are simply a lot more engaged in actively monitoring what the car is doing even when it's not doing anything that requires them to intervene, based on the reporting I've seen lately.