I want that the traffic with bus and car move outside the freeway traffic and stop at the departure and arrival parkings by the next side of terminal. And I want that the car/bus move slope and down by the gmax material as a platform. Is it possible ?

You need addons for that. Don't ask me, I don't know any good ones for that.

Don't really know, but I think freeway traffic will follow the terrain and will also use a platform, but I don't think will work so well on an airport. Airport traffic I think is controlled by "living world cfg" but I think is only follows airport vehicle and taxi paths. It might be possible to use simconnect to move around vehicles in different ways at an airport, but that would require learning how to program an app for simconnect. scott s..

You can't make them stop at stops. But it is possible to create 3D objects like ramps and bridges and have them go over, assuming you create the paths with SBuilderX. How to do it, I can't really say, as I've seen it but never tried it myself.