Some college or something made a self driving systems that used small reflective strips attached to a road course to guide itself, and apparently it was super effective and allowed them to run multiple cars totally autonomously. But yah know, talking the US government into installing a bunch of tiny strips every foot of the highway is a tall order.
Things like that are also done in LEGO robotics classes and competitions. Not sure how much more difficult it is to do with larger vehicles, but such technology has been quite available for at least more than a decade.
Some college or something made a self driving systems that used small reflective strips attached to a road course to guide itself, and apparently it was super effective and allowed them to run multiple cars totally autonomously. But yah know, talking the US government into installing a bunch of tiny strips every foot of the highway is a tall order.
Things like that are also done in LEGO robotics classes and competitions. Not sure how much more difficult it is to do with larger vehicles, but such technology has been quite available for at least more than a decade.