Headlamps arranged to provide a single distribution of light not supplemented by auxiliary driving lamps shall be permitted on motor vehicles manufactured and sold prior to July 1, 1938, in lieu of multiple-beam road-lighting equipment specified in section 321.409 if the single distribution of light complies with the following requirements and limitations:
 1. The headlamps shall be so aimed that when the vehicle is not loaded none of the high-intensity portion of the light shall at a distance of twenty-five feet ahead project higher than a level of five inches below the level of the center of the lamp from which it comes, and in no case higher than forty-two inches above the level on which the vehicle stands at a distance of seventy-five feet ahead.

Terms Used In Iowa Code 321.417

  • following: when used by way of reference to a chapter or other part of a statute mean the next preceding or next following chapter or other part. See Iowa Code 4.1
  • Vehicle: means any vehicle as defined in chapter 321. See Iowa Code 321H.2
 2. The intensity of the light shall be sufficient to reveal persons and vehicles at a distance of at least two hundred feet.