"Interesting how two paths can never cross in this scheme."
No..the wouldn't have to. And even if there was a waiting situation it would be a very simple matter.
Well it's a simple matter now, isn't it?
Somebody's got a stop sign, somebody's got a red light. somebody's got a green light. Pretty darn simple.
Accidents still happen. I don't believe that turning over control of the vehicle to someone else will stop it.
And in a totally centralized system, no matter how scientifically controlled there will be errors, yea even unto snafus, in a totally centrally controlled system such an error will kill great gobs of motorists and others all at one time instead of in thousands of separate crashes. I suppose that would be somehow more efficient or something.