Create roads on different meshes in Run time.

Problem

I want to create roads on a mesh that alines with the mesh beneath it, the problem is that I don't know how and the mesh where the road should be on is build with different meshes.

I thought a projector can project the road on the meshes, when setting the projectors to orthograp$$anonymous$$c it will show a road that perfectly aligns with the mesh beneath it, but how tell the AI agents they have to walk on the projection?

If you know a better way or how to have it working with projectors.

Thank you already