Our product, the Signal Sorcerer® G4², is a magnetic device that, when attached to the underside of a vehicle, allows the electromagnets that control traffic signals at intersections (called inductive loops) to detect it. These loops only detect iron – not the rubber, aluminum, and plastics that comprise so much of today's vehicles – especially motorcycles! The Signal Sorcerer® G4² is DOT and EPA compliant. It is legal for anyone to own and use anywhere in the world.