A driver must carry the vehicle's registration card in the vehicle. In addition, registrations cards for any towed unit must also be carried, if the unit requires registration. Registration cards are subject to inspection by any law enforcement officer. A person violating ND Century Code 39-04-55 will be assessed a fee of 20 dollars. If a person cited for violation of this section displays the registration card to any law enforcement officer within 48 hours, the violation is considered to not have occurred.