Transport of horses is quite unlike moving other large animals. People have a close relationship with their horses, more like that with dogs. I have a stock horse living in my garden now that talks quietly to me, insists on drinking from the bird bath, steals food from any meal eaten outside and sneaks inside if a door is left open. When moving them we have to make sure that all equipment is in good order because break downs create a difficult problem and accidents are a very bad situation. For the horse and the owner. Wheel bearings fail, linkages disconnect or break, there are all sorts of matters to consider in making sure the transport is safe.