Yesterday I had to make a 911 ambulance call for a guy who went down in front of me on some RR tracks running almost parallel to the road. He was wearing a helmet but it wasn't a factor, it never touched the ground. He did a faceplant and messed up his nose and his front teeth. We helped stop the bleeding, he blacked out momentarily, the Fire Dept. medics were on the scene within five minutes, and an ambulance about five minutes later.