You can even design some type of system where the taxis can only physically go on a routed road, and then you won't have to worry about real world conditions. A

You can even design some type of system where the taxis can only physically go on a routed road, and then you won't have to worry about real world conditions. And then you can just integrate some sensors into the routed roads to detect the vehicles' location and then you can guarantee they'll never crash. Oh! Oh! And then for efficiency maybe you can chain a ton of robotaxis together, so you only need one drivetrain... wait a second...