Establishes provisions relating to child safety on motorcycles and motortricycles

Missouri's HB 2328, known as "Calvin's Law," creates new safety requirements for children under 10 riding as passengers on motorcycles or motortricycles. It prohibits operators from allowing children under 10 to ride unless the vehicle has a proper passenger seat and the child can place both feet on foot pegs (with medical exemptions allowed), and requires all under-10 passengers to wear helmets meeting state standards. The law directly affects motorcycle operators transporting young children and sets fines up to $100 for violations, with stops permitted solely to check compliance. It takes effect January 1, 2027, and does not impose criminal penalties for these specific violations.