HB 124 -- Children Riding on Motorcycles Sponsor: Meiners This bill establishes minimum guidelines for allowing a child to ride as a passenger on a motorcycle. A child must be at least eight years old, four feet six inches in height, and 65 pounds in weight. Any person convicted of transporting a child on a motorcycle in violation of this requirement will be guilty of a class C misdemeanor.Copyright (c) Missouri House of Representatives