Missouri Revised Statutes Title XIX. Motor Vehicles, Watercraft and Aviation § 307.180. Bicycle and motorized bicycle, defined

(1) The word “bicycle” shall mean every vehicle propelled solely by human power upon which any person may ride, having two tandem wheels, or two parallel wheels and one or two forward or rear wheels, all of which are more than fourteen inches in diameter, except scooters and similar devices;

(2) The term “motorized bicycle” shall mean any two- or three-wheeled device having an automatic transmission and a motor with a cylinder capacity of not more than fifty cubic centimeters, which produces less than three gross brake horsepower, and is capable of propelling the device at a maximum speed of not more than thirty miles per hour on level ground, but excluding an electric bicycle, as defined in section 301.010. A motorized bicycle shall be considered a motor vehicle for purposes of any homeowners' or renters' insurance policy.