Diagonal GLR in Ave pieces/ tutorial

[SC4BOY]

I'm not sure if I'm requesting new pieces or if I just don't know how to use the current pieces. I am trying to make GLR in Ave cross various common intersections while on the diagonal. I found the orthogonal to diagonal pieces and the pieces to continue the GLR-AVE in a diagonal fashion, but when I come to cross other things, I can find no way to do it.. for example crossing streets, roads, one-ways, tracks, etc etc... I've tried to cross with oneway pieces and to use the "draggable" El-Rail to GLR "starter pieces. I can make either the GLR or the Ave's cross, but I can't put the parts together. What am I missing? Or is this just part of some "future plan"?

[z]

This is not currently possible.  It would be very useful, though, and hopefully it will be done at some point.