Autonomous vehicles and the passengers, will sometimes need assistance from a human operator.

This can be achieved on distance from a "control tower" that not actually is a tower like in an airport where a visual control is required. One, or a few, control towers can service each country.

AVs have cameras around and inside and an operator can use surround screens or VR headset to take remote control over, or send instructions to the vehicle if needed.

If a passenger needs assistance he press the CALL CABIBUS CENTER button on the cabin display and a video call is established with an operator that can help.