Ability to import Track data set at real-life elevation?

[Nictrain123]

I've heard from some friends of mine that you could be able to port route data regarding tracks, roads etc. on TransDEM routes into Trainz that are set that the height elevation they would be in real life. I believe its something that has to do with what's called "vector data" but I've not heard that much information, nor a tutorial on how to do it or a source for track data that allows you to port it into TransDEM and into Trainz, so you won't have to fix the track grades and heights manually on your own. If anyone might know anything about this method that could help me learn this process, I'd very much appreciate it.

[geophil]

You will need a proper 3D vector data source. This kind of data often exists with railway infrastructure providers but is usually not available to the general public.