We have had one of these locally for a while now. It does seem to work well but since they're rare and I don't normally drive around that area, when I do I really need to pay attention to the road signs to know what's going on and where to go as it's definitely not intuitive.
Ours seems like it was put in instead of any other option due to the available real estate. The diverging diamond doesn't seem to take up any more space than the existing roads and intersection did. The existing bridge work for the highway overpass didn't have to change afaict.
Ours seems like it was put in instead of any other option due to the available real estate. The diverging diamond doesn't seem to take up any more space than the existing roads and intersection did. The existing bridge work for the highway overpass didn't have to change afaict.