Any motor vehicle may be operated under the conditions specified in K.S.A. 8-1703 when equipped with two (2) lighted lamps upon the front thereof capable of revealing persons and vehicles one hundred (100) feet ahead in lieu of lamps required in K.S.A. 8-1724 or 8-1726: Provided, That at no time shall it be operated at a speed in excess of twenty-five (25) miles per hour.
K.S.A. 8-1727