321.417  Single-beam road-lighting equipment.

Head lamps 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 herein specified if the single distribution of light complies with the following requirements and limitations:

The head lamps 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.

The intensity shall be sufficient to reveal persons and vehicles at a distance of at least two hundred feet.

Section History: Early form

  [C24, 27, 31, 35, § 5049; C39, § 5034.26; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, § 321.417]

Internal References

  Referred to in § 321.1, 321.418


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