By pure curiosity and honestly as a real challenge, I created a very basic ground vehicle traffic. Needless to mention that is a tremendous work to get appropriated Afcad and a meticulous coordination of four flightplans. Even after hours and endless restarts, it isn't still perfect!
As said in a fomer post, it would be a great improvment if the vehicles could stop at the aircraft. But what already is impossible for ship traffic, isn't neither possible here. Unless an invisible aircraft would cross the path and stop the vehicle, like two planes crossing on taxiways. Therefore I linked a TrafficViewBoard to the bus path, but it needs an absolute exact timing too. Up to now it remains without any result.
Not the best, but the only choice!
Anyway, I don't intend to create such ground traffic at each airport!
Bernard