A person commits an offense if he operates a motorcycle, motor scooter, mini-bike, or motor-driven bicycle on private property, unless the vehicle is equipped with a muffler meeting the requirements of Texas motor vehicle laws. No parent, guardian, or other adult person shall knowingly permit a person under the age of 17 years who is under the control of such parent, guardian, or adult, to violate this section. (Ord. 14584)