321.420  Number of lamps lighted.
  Whenever a motor vehicle equipped with headlamps as required in this chapter is also equipped with any auxiliary lamps or a spot lamp or any other lamp on the front of the vehicle, that projects a beam of an intensity greater than three hundred candlepower, not more than a total of four of any such lamps on the front of the vehicle shall be lighted at any one time when upon a highway.
[C39, §5034.29; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.420]
2021 Acts, ch 80, §177; 2022 Acts, ch 1021, §72
Referred to in §321.1, 805.8A(3)(y)
For applicable scheduled fine, see §805.8A, subsection 3