Sec. 4. (a) This section does not apply to head lamps, spot lamps, auxiliary lamps, flashing turn signals, emergency vehicle warning lamps, and school bus warning lamps.
(b) A lighted lamp or illuminating device upon a motor vehicle that projects a beam of light of an intensity greater than three hundred (300) candlepower shall be directed so that no part of the high intensity part of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than seventy-five (75) feet from the vehicle.