RSA 265:95: Obstruction to Driver's View or Riding Mechanism.

I. No person shall drive a vehicle when it is so loaded, or when there are in the front seat such a number of persons, exceeding 3, as to obstruct the view of the driver, to the front or side of the vehicle or as to interfere with the driver's control over the driving mechanism of the vehicle.

II. No passenger in a vehicle shall ride in such position as to interfere with the driver's view ahead or to the sides, or to interfere with his control over the driving mechanism of the vehicle.

(a) Except as permitted by subparagraph (b), no person shall drive upon any way any vehicle with any sign, poster, sticker, or other nontransparent material upon or adjacent to the front windshield, side wings, or side or rear windows of such vehicle which shall obstruct the driver's clear view of the way or any intersecting way, unless authorized by the director so to do. No person shall drive upon any way any vehicle with after market tinting on the windshield, as prohibited under RSA 266:58-a.

(b) Stickers or other nontransparent material shall be permitted on a rear window if the vehicle is equipped with exterior rearview mirrors on the right and left side of the vehicle that provide the driver with a clear and unobstructed view of the way to the rear of the vehicle and the stickers or other nontransparent material are attached along the perimeter of the rear window in such a manner that the inside rearview mirror provides a view of the way to the rear of the vehicle through the center portion of the rear window.

IV. Any person who violates the provisions of paragraph I, II, or III of this section shall be subject to a fine of $75.