Missouri Revised Statutes Title XIX. Motor Vehicles, Watercraft and Aviation § 307.070. Dimming of lights, when--violation, penalty

1. Every person driving a motor vehicle equipped with multiple-beam road lighting equipment, during the times when lighted lamps are required, shall use a distribution of light, or composite beam, directed high enough and of sufficient intensity to reveal persons and vehicles at a safe distance in advance of the vehicle, subject to the following requirements and limitations: Whenever the driver of a vehicle approaches an oncoming vehicle within five hundred feet, or is within three hundred feet to the rear of another vehicle traveling in the same direction, the driver shall use a distribution of light or composite beam so aimed that the glaring rays are not projected into the eyes of the other driver, and in no case shall the high-intensity portion which is projected to the left of the prolongation of the extreme left side of the vehicle be aimed higher than the center of the lamp from which it comes at a distance of twenty-five feet ahead, and in no case higher than a level of forty-two inches above the level upon which the vehicle stands at a distance of seventy-five feet ahead.

2. Notwithstanding the provisions of section 307.120, violation of this section is an infraction.