Idaho Code § 49-721: Bicycles on sidewalks.

(1) A person operating a bicycle upon and along a sidewalk, or across a highway upon and along a crosswalk, shall yield the right-of-way to any pedestrian, and shall give an audible signal before overtaking and passing a pedestrian or another bicyclist.

(2) A person shall not operate a bicycle along and upon a sidewalk or across a highway upon and along a crosswalk, where the use of bicycles is prohibited by official traffic control devices.

(3) A person operating a vehicle by human power, or operating a motorized wheelchair or an electric personal assistive mobility device upon and along a sidewalk, or across a highway upon and along a crosswalk, shall have all the rights and duties applicable to a pedestrian under the same circumstances.