Device and method for controlling the power supply of a headlamp

The method involves determining pertinent driving parameter e.g. distance, between a vehicle and a following vehicle, for lighting a vehicle, and defining multiple lighting modes. A power supply mode of a headlamp (10) is allocated to one of the lighting mode. The power supply mode associated to the lighting modes is recorded. A lighting controller (12) is arranged for receiving values related to parameters and generating supply voltage. An independent claim is also included for a device for controlling a power supply of a headlamp.