Bicycles, skateboards, rollerblades and sleds may be operated single file only, on sidewalks in public parks and residential districts. The rider or operator shall at all times yield the right-of-way to pedestrians using the sidewalk, and due and proper care shall at all times be exercised by the rider or operator for pedestrians. (Ord. 694 (part), 2011: Ord. 626, 2005: Ord. 600, 2004: prior code § 11-218)