1. At the times when lighted lamps are required, at least two lighted lamps shall be displayed, one on each side of the front of every motor vehicle except a motorcycle and except a motor-drawn vehicle except when such vehicle is parked subject to the provisions governing lights on parked vehicles. Whenever a motor vehicle equipped with headlamps as in this chapter required is also equipped with any auxiliary lamps or a spotlamp or any other lamp on the front thereof projecting 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 a vehicle shall be lighted at any one time when upon a highway.

2. Notwithstanding the provisions of section 307.120, violation of this section is an infraction.