Ok, so there is no express grant of the easement in the deeds. Did you check the map room at the registrar's office to see if an easement was platted when the land was subdivided?

And there are...

You can gate off the road and lock it. If these persons want to make an issue of it , they will have to go to court. They have no recorded easement to enforce. They will have to go to court to...

There are several legal doctrines that can come into play here based on your answers to these questions (some of which have already been asked).

How long have they been using the road? That...