(A) The Director of Public Safety or his/her designee is authorized to erect signs on any sidewalk, street, or roadway prohibiting the riding of bicycles thereon by any person, and when such signs are in place, no person shall disobey the same.
(B) Whenever any person is riding a bicycle upon a sidewalk, such person shall yield the right-of-way to any pedestrian and shall give audible signal before overtaking and passing such pedestrian.