W. Va. Code § 17C-15-24: Alternate road-lighting equipment.

Any motor vehicle may be operated under the conditions specified in section two of this article when equipped with two lighted lamps upon the front thereof capable of revealing persons and objects seventy-five feet ahead in lieu of lamps required in section twenty or section twenty-two of this article: Provided, however, That at no time shall it be operated at a speed in excess of twenty miles per hour.