Abstract: A method for operating a control unit of a light-weight vehicle, especially of a pedal electric cycle or of an electric kick scooter. The method includes: receiving at least one sensor information associated with a sensor of the vehicle; and transmitting, via a communication channel between the control unit and a personal mobile terminal, the at least one sensor information and/or at least an information based thereon.

Abstract: A portable electronic device (UEa) that includes determining means to determine a coupling state that indicates a coupling or non-coupling of the portable electronic device with a vehicle-side control unit of a lightweight vehicle; and selecting means to select one of at least a first and second VRU class of the portable electronic device based on the determined coupling state.

Abstract: A method for operating a determination unit (DUb) of a personal mobile terminal or a device with a user interface (UIb). In one example, the method includes receiving, via at least one communication channel (CHb) between the determination unit (DUb) and a control unit (CUb) of a vehicle (BICb), at least one sensor information; determining at least one status information associated with the vehicle (BICb) based on the received at least one sensor information; and transmitting, via the at least one communication channel between the determination unit (DUb) and the control unit (CUb), the at least one determined status information associated with the vehicle (BICb).