(a) The head lamps and auxiliary driving lamps of motor vehicles shall be so constructed, arranged, adjusted and used that they will, under normal atmospheric conditions and on a level road produce a driving light sufficient to render clearly discernible a person or vehicle at least 500 feet ahead, except when approaching an oncoming vehicle, when it shall be sufficient to render clearly discernible a person or vehicle 75 feet ahead. Auxiliary lamps may emit either a white or amber light.
(b) Whenever the driver of a vehicle approaches an oncoming vehicle within 500 feet, such driver 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, 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 25 feet ahead, and in no case higher than the level of 42 inches above the level upon which the vehicle stands at a distance of 75 feet ahead.
(c) Whenever a motor vehicle is being operated upon a highway or a portion thereof, which is sufficiently lighted to reveal a person or vehicle on the highway at a distance of 500 feet ahead, it shall be permissible to dim the head lamps or to tilt or depress the dimmer downwards or substitute therefor the light from an auxiliary driving lamp or pair of such lamps, subject to the restrictions as to glaring lights set forth in the foregoing section; provided, that at nighttime at least two lights shall be displayed to the front of and on opposite sides of every moving motor vehicle, other than a motorcycle, motor-driven cycle, bicycles with motor attached, road roller, road machinery, or farm tractor.
(d) Every motorcycle and every motor-driven cycle shall be equipped with at least one and not more than two head lamps which shall comply with the requirements and limitations of this section.
(e) Every head lamp, upon every motor vehicle, including every motorcycle, shall be located at a height measured from the center of the head lamp of not more than 54 inches nor less than 28 inches above the level surface upon which the vehicle stands.
(f) The head lamp or head lamps upon every motor-driven cycle may be of the single beam or multiple beam type, but in either event shall comply with the requirements and limitations as follows: every said head lamp or head lamps on a motor-driven cycle shall be of sufficient intensity to reveal a person or vehicle at a distance of not less than 100 feet when the motor-driven cycle is operated at any speed less than 25 miles per hour and at a distance of not less than 200 feet when the motor-driven cycle is operated at a speed of 25 or more miles per hour; provided, that no person shall operate any motor-driven cycle between the hours of one-half hour after sunset to one half- hour before sunrise, at a speed greater than 35 miles per hour, unless such motor-driven cycle is equipped with a head lamp or lamps which are adequate to reveal a person or vehicle at a distance of 300 feet ahead.
(Ord. 894, passed 1-5-1950)