The question related to the wiring wise men:
The point is to make elevator, that can update during passing the vertical world-chunks, and the method i used was to call it from passed station to the next-one automatically. There were realised the conception of 2-endpoints, and «transitional»-stations, - those supposed not to be stop-point, whenever you already operating your tram, but to be the points you can also call your elevator by direct request.
There is the way i realised that on 2 endpoints and one transitional station, but it's way-too overengeneered, i guess (and i've even not yet assured that it will pull the tram out from unloaded chunks). Maybe someone can tip a more elegant decision for that task, you have already?