So I've been wondering about this for a very long time, and I have not gotten a clear answer so far. I want to be able to change the road behavior on a map to simulate slick roads, but I don't know how I would do that. An example of what I want to do is making a section of the Matrix Freeway map slippery like ice so I can simulate pile-ups in icy conditions. How would I accomplish that? Any help would be much appreciated!
This feature used to be in the world editor, but is no longer there due to a game bug. There's a solution here to fix that, also there's some other methods that may help you https://www.beamng.com/threads/how-to-change-ground-type.86558/#post-1488382
Thank you for the info! I think I found what I needed though, which is this UI App that changes the ground texture behavior. https://www.beamng.com/resources/road-grip-editor.15350/