Yea, I wiped out on horrible tracks as we were leaving lunch with Lisa, a couple of years ago. She even warned me! I don't have a lot of experience with tracks; we don't have a lot of them here and the ones I cross regularly are not raised or scary. If I see tracks that look dangerous, I often unclip and put one foot down and scoot across. The reason is in my next paragraph.
When I went on my bike tour in the Czech Republic, one of the women crashed on wet tracks on the second day. She was in her late sixties. Short story is the docs at the hospital said no, there's no broken hip. She had to hole up in the room until we got to Austria, where they promptly diagnosed a hip fracture. By this time, her stomach was wrecked from the Ibuprofen she was taking. It was really awful.