Those are manned with a qualified driver who supposedly is paying attention and can take control at any time.
These trucks are unmanned, with a remote driver who may or may not be paying attention but can take control at any time.
These trucks are unmanned, with a remote driver who may or may not be paying attention but can take control at any time.
Also, the safety net inside the vehicle is clearly just for testing purposes, while the remote safety net is something that can be done in production.