A couple of years ago I was riding back along the guided busway from St Ives and a horse about 50yds in front, heading in my direction got spooked by something/nothing. It was bucking and wheelieing all over for a good half minute. I'm glad no busses came by. It was proper scary as it was a big bugger.
Why take a horse along there in the first place? Didn't seem like a good idea as those busses motor along.
I pass slow and wide, having announced my presence.
Once, but only once the rider smiled ( that's as rare as....)