(3)   Security.
(a)   Rack elements, or the part of the bike rack that supports one bicycle, shall comply with standards established by L&I and the Streets Department and shall support the bicycle frame at two locations, prevent the bicycle from tipping over, and enable the frame and one or both wheels to be secured with a user-supplied locking device.
(b)   If provided, bicycle storage facilities shall be provided with tamper-proof locks. When multiple bicycles are stored together, provisions shall be made for locking bicycles individually.