Can someone clarify the original note? Is "duplicate" a noun, as in "Currently there are duplicate highway crossings on the bike lanes, and that is bad." If so, why is it bad? Or is "duplicate" a verb, as in "A mapper should duplicate the highway crossings and place them on the bike lanes." If so, has that now been done? And either way, I'm not sure what is bad about the way it is. If we knew what problem the current setup is creating, we can try to find a way to reflect the intersection appropriately while avoiding that problem.