Any road traffic coordination is by nature reactive, vehicles appear at random times in an unplanned manner.
Now, yes, you can sequence trafffic lights to improve road usage in a localised manner. This is hardly the same degree of control that an air traffic service mandates inside CAS. For example, you can’t randomly choose to go off piste and turn left or right without first coordinating that with the controller, and such requests are not that uncommon, particularly in bad weather. Sure, a mandatory TCAS resolution advisory will demand immediate action, but that is very rare, and you’d want to be communicating any action with the controller ASAP. After all, ATC in CAS is already there to maintain separatiion. A TCAS RA inside CAS will generally be as a result of pilot or controller error, and that’s the reason it’s rare.
So what I am trying to convey is that autonomous vehicles are relying on a reactive system for collision avoidance. You can talk about roads, lanes and traffic lights, but that is nowhere near the level of control that occurs in CAS. Outside CAS, yes, it’s not a million miles off, where we adhere to the Rules of the Air, and look out of the window a lot!