In this instance we are referring to bifurcated plates connected to an electromotive force generator.
They are installed at intersections and as such can be used to power Intersection Traffic Control Lights - with Power to spare. Their Amazing Property is that they are just as 'invisible' to passing motorcycles as they are to passing cars and passing transport trucks.
Their Amazing Situation is that they work, coming to a Stop Sign, both uphill and downhill.
