N.D. Cent. Code § 39-04-19.1: Registration of soil and water conservation vehicles

Trucks or combinations of trucks and trailers owned and operated by a bona fide resident of this state, but no more than one truck tractor and lowboy trailer unit, of a gross weight of twenty-four thousand one pounds [10886.67 kilograms] or more and used exclusively in soil and water conservation work or exclusively for township road construction work that results in direct benefits to agriculture, shall be furnished license plates upon the payment of one-half the annual fees for such corresponding weight as provided in subdivision b of subsection 2 of section 39-04-19. This section is not applicable to any trucks and trailers used in road construction work, the contract for which is in excess of three thousand dollars.