The provisions of this Section shall apply to parking facilities created after December 10, 2012, or for parking facilities enlarged by 50 or more spaces after December 10, 2012. For all accessory parking garages and public parking garages, the following safety features shall be provided at all vehicular exit points:

(a)        a ‘stop’ sign which shall be clearly visible to drivers. Such signage shall comply with the standards set forth in the Manual of Uniform Traffic Control Devices (MUTCD) issued by the Federal Highway Administration (FHWA) for a conventional single lane road; and

(b)        a speed bump, which shall be located within the exit lane of the parking facility. Such speed bump shall:

(1)        span the entire width of such exit lane;

(2)        have a minimum of two inches in height, as measured from the adjoining grade of the exit lane, and a maximum depth of 12 inches; and

(3)        be located a minimum of four feet beyond the street line, as measured perpendicular to the street line.