"Snowmobile" shall mean any vehicle propelled by mechanical power that is designed to travel over ice or snow supported in part by skis, tracks, or cleats. Only vehicles that are no more than 54 inches in width and no more than 1200 pounds in weight shall be considered a snowmobile. Snowmobiles shall not include OHRVs as defined in RSA 215-A.
N.H. Rev. Stat. Ann. § 259:102
Snowmobile
Source
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.