Whenever a motor vehicle is being operated during darkness, the driver 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:
(a) Whenever the driver of a vehicle approaches an oncoming vehicle within 500 feet, he shall use a distribution of light or composite beam so aimed that the glaring rays are not projected into the eyes of the oncoming driver.
The lowermost distribution of light specified in this article shall be deemed to avoid glare at all times regardless of road contour.
(b) Whenever the driver of a vehicle follows another vehicle within 300 feet to the rear, he shall use the lowermost distribution of light specified in this article.