I did the same thing with a trolley in the city when it was pouring out. I went around it and started to come back over the tracks in the front when my wheel washed out. I happened to treat a crowd of shoppers and people at the bus stop to me picking myself of the ground and scurrying of the road trying not to get run over by the trolley behind me. Thing about falls is that the pain catches up to you after a while usually and only then do you discover the huge bruise on your hip like I did.