N.H. Rev. Stat. Ann. § 215-A:21
II. Except as otherwise provided, no OHRV shall be operated in this state unless registered as provided in this chapter. No registration shall be required for an OHRV operated solely on land owned or leased by the owner of the OHRV. Except for temporary registrations under paragraph V, all OHRV registrations shall expire on May 1 in each year. The executive director shall collect a fee for each registration as provided in RSA 215-A:23.
II-a. [Repealed.]
II-b. Notwithstanding RSA 215-A:21, II, no registration shall be required for a youth model all terrain vehicle when the operator is under 12 years of age and accompanied by a person 18 years of age or older who holds a valid license to operate an OHRV.
II-c. Notwithstanding RSA 215-A:21, II, no registration shall be required for a youth model trail bike when the operator is under 12 years of age and accompanied by a person 18 years of age or older who holds a valid license to operate an OHRV.
II-d. If an OHRV is held by a trust, the trust may designate a person who is a beneficiary to register the vehicle in the person's name pursuant to this chapter.
IV. [Repealed.]
IV-a. [Repealed.]
IV-b. Antique all terrain vehicles may be registered by a one-time purchase of a permanent plate to be affixed permanently to the antique all terrain vehicle. This registration shall be available at the fish and game headquarters only.
IV-c. Antique trail bikes may be registered by a one-time purchase of a permanent plate to be affixed permanently to the antique trail bike. This registration shall be available at the fish and game headquarters only.
IV-d. [Repealed.]
V. All OHRVs except conventional motor vehicles registered for highway use shall be registered at the fee provided in RSA 215-A:23, and shall be furnished a registration plate or decals of a design and color as chosen by the executive director. Said registration plate or decals shall be attached securely on the front and rear of the vehicle, in an unobstructed manner, as high as possible or at a location designed by the manufacturer. A nonresident registering an OHRV for a temporary 10 consecutive day period during the months of May to October shall be issued a temporary registration by the executive director. Such registration shall be valid only for 10 consecutive days from the start date and time specified on the registration. The executive director shall determine the procedure for issuance, design, color, and placement of temporary registration decals. Temporary registrations may not be transferred.
V-a. (a) All OHRV trails maintenance vehicles shall be registered with a number to be placed and attached in the manner prescribed in paragraph V.
VI. No person shall operate any OHRV unless the assigned OHRV registration numbers, plates, or decals are placed on the OHRV as required by this chapter.
VI-a. No person shall knowingly affix or permit to be affixed to his or her OHRV a registration decal or plate, issued by the department or by the registration authority of any other jurisdiction, that is assigned to another OHRV.
Source. 1981, 538:3. 1983, 449:11. 1985, 137:2; 261:7, 8. 1986, 152:15-18. 1988, 208:1. 1990, 133:1, 2. 1997, 117:1. 2000, 85:2; 108:3, 4. 2002, 233:26, 27. 2003, 295:15. 2005, 210:24, 25, 64, IX, X. 2008, 151:7, VI. 2010, 14:1, 2, eff. Sept. 4, 2010; 14:4, 5, eff. Jan. 1, 2013; 216:1, eff. July 1, 2010. 2014, 286:1, 2, eff. Jan. 1, 2015. 2015, 2:1, eff. April 15, 2015. 2016, 233:1, eff. May 1, 2018; 241:1, eff. June 10, 2016. 2017, 156:14, I, eff. July 1, 2017. 2019, 216:5, eff. Sept. 10, 2019; 241:3, 12, I, eff. May 1, 2020. 2023, 217:2, eff. Oct. 3, 2023.