(1)Whether the rotary uninterrupted back-up power supply support engine of the rail signalling system of the Gauteng Nerve Centre (GNC) is functional; if not, by which date will it be functional;
(2) (a) what number of the GNC’s 92 train stations have been commissioned with the new Siemens electronic interlocking system and (b) why were the specified stations commissioned with the specified system;
(3) whether the GNC’s central traffic control centre satellite system is functional; if not, (a) what will the effect be on the operations of the GNC and (b) by which date will it be functional?