I tried to find the tag in the editor and could not find it.  I would offer to let you change them and the other ones I have not got to, but I found one tagged like that at Garden of the Gods and it does not display on the map in OSMAnd.  Anyone who rides horses in Shawnee knows what they are and that they must be used.  There are big fines if they get caught and the trails will get closed to horses if they don't use them.  It is a really big deal in Shawnee.  Any horse user is going to know what it is and to use it.  The areas they cannot go in are very sensitive and horses can devastate the area.   Since I am adding the trails they ride, I think it is vital that they can see it on the map.  I have a note on all of them that explains what it is.