RSA 261:57 Twenty-Day Registration.

I. Any resident of this state who intends to purchase a vehicle in another state or from another person or who is unable to register a vehicle because of limited hours of operation of the town clerk in the town where the person resides may apply to the division or its substation or authorized agent nearest his or her residence for a registration to drive said vehicle on the ways of the state in an unregistered condition. Said resident shall appear in person at the division or substation to obtain such registration and shall sign under penalty of perjury a statement that the vehicle meets all New Hampshire inspection requirements, and in the case of a person seeking an extension of his or her registration, that he or she was unable to register the vehicle because of the limited hours