9 Parts and fittings of or for land vehicles, namely, perimeter proximity sensors for parking; perimeter proximity sensor systems for reversing and parking consisting of ultrasonic sensors, central control unit, audible and visual indicator display and GPS speed activation devices for land vehicles; obstacle detection sensor systems consisting of ultrasonic sensors, central control unit, audible and visual indicator display and GPS speed activation devices for land vehicles; perimeter proximity sensor systems for reversing and maneuvering consisting of ultrasonic sensors, central control unit, audible and visual indicator display and GPS speed activation devices for land vehicles, cars, trucks, trailers and coaches; proximity sensor systems consisting of ultrasonic sensors, central control unit, audible and visual indicator display and GPS speed activation devices for heavy plant machinery and forklift equipment; parts and fittings especially adapted for the aforesaid goods, namely, ultrasonic sensors, audible and visual indicator display, central control unit, motion activated switches, wires, cables, and GPS speed activation devices