Hi there - have you thought any more about this? I've been riding it more frequently lately and making some observations and notes, and I really do believe that retagging these cycletracks onto the roadways is the right way to go. If they were fully grade-separated or constructed separately of a different material, I think then it would be more accurate to have them as separate objects. But VB & Holton weren't even resurfaced (mostly), they just slapped down some paint lines on VB and jersey barriers on Holton. Retagging them onto the roadways would simplify a lot of future editing, and they'd still render pretty much the same too.