SuperStreets roadway is functionally O gauge three-rail track built very unobtrusively into a realistic street. Because at heart SuperStreets is O-gauge track, you control the traffic on with your existing transformer. Visually the roadway pieces look very much like the asphalt streets in cities & towns. There is a countersunk screw hole in each piece, hidden by a detailed manhole cover. RailRoadster vehicles are designed especially for SuperStreets. However, any O gauge engine or motorized unit like vans, speeders, inspection vehicles & trolleys run on SuperStreets.