A stand-alone photosensor assembly has a housing with an axis, a first axial end and a second axial end opposite the first axial end. The voice coil assembly may include a bobbin configured to translate between an engaged position and a disengaged position. The drive circuit also comprises a total current detection device with the aid of which it is possible to determine an actual magnitude which corresponds to the sum of the currents through at least two of the second LED cluster. An output node of any of the n second circuits is electrically connected to an input node of the second circuit in a first stage through the variable resistor. The movable contact strip is configured to be isolated from the first and second fixed contact strips at substantially the same time when the control member is controlled against a biasing force of the spring. The object is to provide a method and a device which recognize the protrusion of a vehicle into the oncoming lane of a multi-lane roadway during a parking operation in a timely manner and, if necessary, activate suitable means for preventing the protrusion into the oncoming lane.