49-715. RIDING ON HUMAN-POWERED VEHICLES, BICYCLES, OR ELECTRIC-ASSISTED BICYCLES. (1) No operator or rider of a human-powered vehicle, bicycle, or electric-assisted bicycle shall ride other than on or astride an attached permanent and regular seat. (2) No human-powered vehicle, bicycle, or electric-assisted bicycle shall be used to carry more persons at one (1) time than the number for which it is designed and equipped. (3) An adult rider may carry a child securely attached to his person in a backpack or sling or in a child carrier attached to a human-powered vehicle, bicycle, or electric-assisted bicycle.
RIDING ON HUMAN-POWERED VEHICLES, BICYCLES, OR ELECTRIC-ASSISTED BICYCLES
Idaho Code § 49-715, under PEDESTRIANS AND BICYCLES.
Idaho Code § 49-715