Hello,
I watched tutorial on YouTube regarding subgrades and I'm aware of priorities and it's clear to me when it comes to standard (easy) crossings or areas.
What confuses me is the no overlap rule. So if we have some more complex terrain structure I wonder how would you organize subgrades.
One example would be a roundabout that isn't on flat terrain - so there are roads that join the roundabout plus the roundabout itself (which is also elevated). Or, roads that intersect each other but they are on different heights. Also, what about subgrades for surrounding area?
You can also check the street view for better look.
