Wired vehicle detection systems use a buried loop of wire or a probe sensor to sense the metal of a vehicle passing over or near it, and this change in the magnetic field triggers an action, such as automatically opening a gate. Installation typically involves cutting a groove in a driveway for the wire loop, running the lead wires back to a control module, and connecting the system to power and the gate operator. These systems are a common method for automatic gates to detect a vehicle and provide hands-free operation.