§47-12-221.

§47-12-221.
   
   Except as hereinafter provided, the head lamps or the auxiliary
   driving lamp or the auxiliary passing lamp or combination thereof on
   motor vehicles other than motorcycles or motor-driven cycles shall be
   so arranged that the driver may select at will between distributions
   of light projected to different elevations and such lamps may, in
   addition, be so arranged that such selection can be made
   automatically, subject to the following limitations:
   
   1. There shall be an uppermost distribution of light, or composite
   beam, so aimed and of such intensity as to reveal persons and vehicles
   at a distance of a least three hundred fifty feet ahead for all
   conditions of loading.
   
   2. There shall be a lowermost distribution of light, or composite
   beam, so aimed and of sufficient intensity to reveal persons and
   vehicles at a distance of at least one hundred feet ahead; and on a
   straight, level road under any condition of loading none of the
   high-intensity portion of the beam shall be directed to strike the
   eyes of an approaching driver.
   
   3. Every new motor vehicle, other than a motorcycle or motor-driven
   cycle, registered in this state after the effective date of this Code
   which has multiple-beam road-lighting equipment shall be equipped with
   a beam indicator, which shall be lighted whenever the uppermost
   distribution of light from the head lamps is in use, and shall not
   otherwise be lighted. Said indicator shall be so designed and located
   that when lighted it will be readily visible without glare to the
   driver of the vehicle so equipped.