Despite this, these are still pretty neat. It's like a tram line without having to build the tracks. You don't need to steer, just not hit anything in front of you. In this case, the sensors can probably do most of that, too.
Nantes' Busway isn't just separate bus lanes though, they get the same level of priority as a tramway, they run straight through roundabouts and other intersections, with lights turning blinking red for cars when the bus approaches. They also stop at every stop unlike regular buses (and they mostly use elevated platforms so there isn't a step to get in or out, IIRC).
Despite this, these are still pretty neat. It's like a tram line without having to build the tracks. You don't need to steer, just not hit anything in front of you. In this case, the sensors can probably do most of that, too.