Interesting. My first response is to assume these would cause a lot of car crashes, but apparently the data says otherwise. If there are other features to ensure drivers are going slow (speed bumps, chicanes, etc) these seem nice as a cyclist too. I’m going to have to gif die the one in Boulder, which looks like a poor example because they allow street parking, so seemingly had enough room for a normal road + bike lane: https://goo.gl/maps/8KZQbB7rDB81Ryjx5