(1) Booths and kiosks that are not more than 20 m2 in area and are used only by the transit agency for fare collection, dissemination of information or similar non-mercantile occupancies shall be of noncombustible construction and are not required to be separated from the remainder of the floor area by a fire separation.
                                
                                
                                (2) Booths and kiosks that are more than 20 m2 in area and are used only by the transit agency for fare collection, dissemination of information or similar non-mercantile occupancies shall be,
                                
                                
                                (a) sprinklered, and
                                
                                
                                (b) separated from the remainder of the floor area by a fire separation of noncombustible construction that is not required to have a fire-resistance rating.
                                
                                
                                (3) A door acting as a closure in the fire separation in Sentence (2) is not required to be equipped with a self-closing device.