Missouri

Motorcycle:

“a motor vehicle operated on two wheels.”

Motorized Bicycle:

“any two-wheeled 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.”

_{(Source: https://revisor.mo.gov/main/OneSection.aspx?section=301.010}

	Licensing	Minimum Age	Registration	Insurance	Helmet
Motorcycle	Motorcycle License	16	Required	Required	Required for riders under age 26 Required for operators driving with a motorcycle instruction permit Required for operators over age 26 who lack medical coverage for injuries sustained while operating a motorcycle
Motorized Bicycle	Standard License	16	Not Required	Not Required	Not Required

_{(Sources: https://www.mshp.dps.mo.gov/MSHPWeb/Root/MotorcycleScooterFeaturedStatute030112.html;
https://www.mshp.dps.mo.gov/MSHPWeb/Publications/Brochures/documents/SHP-445.pdf;
https://revisor.mo.gov/main/OneSection.aspx?section=302.020&bid=48760&hl=;
https://dor.mo.gov/forms/Driver%20Guide.pdf; https://dor.mo.gov/driver-license/insurance/)}