2011 Idaho Code
TITLE 49 MOTOR VEHICLES
CHAPTER 9 VEHICLE EQUIPMENT
49-922 MULTIPLE-BEAM ROAD-LIGHTING EQUIPMENT.

TITLE 49

MOTOR VEHICLES

CHAPTER 9

VEHICLE EQUIPMENT

49-922. Multiple-beam road-lighting equipment. Except as otherwise provided in this chapter, the head lamps or the auxiliary driving lamp or the auxiliary passing lamp or their combinations on motor vehicles other than a motorcycle or motor-driven cycle shall be so arranged that selection may be made between distributions of light projected to different elevations, and the lamps may be so arranged that the selection can be made automatically, subject to the following requirements and limitations:

(1) There shall be an uppermost distribution of light, or composite beam, so aimed and of an intensity to reveal persons and vehicles at a distance of at least three hundred fifty (350) 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 (100) feet ahead. 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 motor vehicle manufactured after December 31, 1954, other than a motorcycle or motor-driven cycle, 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. The 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.