Abstract: A method to control a headlight of a vehicle having a dipping control system is provided. The dipping control system includes a position detector, a map, a luminous intensity measuring device, and a controller. The method recalls the information associated with a work site and, determines a position and a direction of travel of the vehicle. Further, a position and a direction of travel of an approaching vehicle is determined and as a result the headlight of the vehicle is set in a high beam state or a low beam state. The switching of the headlight is based on work site information, whether the vehicle is approaching the other vehicle, and the vehicle and the approaching vehicle are on a trajectory of substantial intersection.