Section 24406 Of Article 2. Headlamps And Auxiliary Lamps From California Vehicle Code >> Division 12. >> Chapter 2. >> Article 2.

. Except as otherwise provided, the headlamps, or other auxiliary driving lamps, or a combination thereof, on a motor vehicle during darkness shall be so arranged that the driver may select at will between distributions of light projected to different elevations, and the lamps may, in addition, be so arranged that the selection can be made automatically.