| 4.17.3. | Additional tests shall be made after the reflector/system or part(s) thereof has been moved vertically ± 2° or at least into the maximum position, if less than 2°, from its initial position by means of the headlamps/systems or part(s) thereof adjusting device. Having re-aimed the headlamp/system or part(s) thereof as a whole (by means of the goniometer for example) in the corresponding opposite direction the light output in the following directions shall be controlled and lie within the required limits: | a0c0 |