See comment here by Boskid

https://www.reddit.com/r/factorio/comments/1c4ruk7/made_an_intersection_with_the_fake_new_rails_mod/kzpiryd/

Not sure if worth pursuing, but could help with making fake designs that could eventually work in 2.0

I was not able to find a way to get collisions working between the different types. If you can get elevated rails to collide with ramps, that would help a lot.

Have you set their collision_mask? It seems to be unset in "get_entity_prototype".

I know Py's has some way to ensure their wind turbines can't be placed too close and some other mods have stuff like that.

I tried setting a variety of collision layers and masks. Do you have a more specific suggestion?