Randy, its a system that allows a subscriber to have a connection to tv phone and internet service in their vehicle when parked at a truck stop which has this service. The physical connection is thru a unit mounted on the ground, in the parking area. They are usually painted yellow, and as was mentioned above, they are hard to find when there is more than a few inches of snow, and of course there are problems with the snow plow truck damaging them.
If you are interested in this service, brochures are usually to be found in most truck stops, but remember, like all new things, this is still having start-up problems. Jim Bunting..