N.Y. Parks Rec. & Hist. Preserv. Law § 25.04
The commissioner shall designate snowmobile trails which proceed along a New York state border and which, occasionally as dictated by terrain, cross into another state, in which such snowmobile is registered and shall publish such trail designation in the New York state register and other publications accessible to the snowmobiling public and shall make such designation available to law enforcement departments which have jurisdiction over such trails to enable the department, such law enforcement departments and the snowmobiling public to identify which trails in the state may be used by a nonresident without requiring a registration of their snowmobile in accordance with subdivision twelve of section twenty-two hundred twenty-two of the vehicle and traffic law.
N.Y. Parks Rec. and Hist. Preserv. Law § 25.04