Every motor vehicle other than a motorcycle, autocycle, road roller, road machinery, or tractor used on a highway shall be equipped with at least two headlights as approved by the Superintendent at the front of and on opposite sides of the motor vehicle.
Such headlights shall not have any aftermarket modifications that cause the headlights to appear as a blue light; however, such prohibition shall not be construed to prohibit the installation and use of headlights of types approved by the Superintendent.
Va. Code § 46.2-1011