N.Y. Veh. & Traf. Law § 121-b

§ 121-b. Limited use motorcycle. A limited use vehicle having only two\nor three wheels, with a seat or saddle for the operator. A limited use\nmotorcycle having a maximum performance speed, of more than thirty miles\nper hour but not more than forty miles per hour shall be a class A\nlimited use motorcycle. A limited use motorcycle having a maximum\nperformance speed of more than twenty miles per hour but not more than\nthirty miles per hour, shall be a class B limited use motorcycle. A\nlimited use motorcycle having a maximum performance speed of not more\nthan twenty miles per hour shall be a class C limited use motorcycle.\n