Abstract: Comprises the following phases: in first phase a vehicle (1) is facing an obstacle (4), screen or wall defining a distance, in second phase is determined the type of headlamp or lighting projector and its space position in relation to the obstacle, screen or wall, automated or hand operated, in third phase the headlamp or lighting projector of the vehicle is turn on and its beam (3) is projected in the obstacle, screen or wall, defining a real drawing (5) of the beam, in fourth phase, according to the space position, the distance to the wall, screen or obstacle and the type of headlamp or lighting projector a processor defines a theoretical beam, and in fifth phase a first artificial viewer (10) takes data of the real drawing and transfers them to the processor which compares them with those of the theoretical drawing.